Merge pull request #10204 from murgatroid99/node_protobuf_js_6_upgrade

Upgrade Node dependency on Protobuf.js to version 6
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 332f8a5..acf47e5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4386,6 +4386,7 @@
   test/core/end2end/end2end_test_utils.c
   test/core/end2end/tests/authority_not_supported.c
   test/core/end2end/tests/bad_hostname.c
+  test/core/end2end/tests/bad_ping.c
   test/core/end2end/tests/binary_metadata.c
   test/core/end2end/tests/call_creds.c
   test/core/end2end/tests/cancel_after_accept.c
@@ -4483,6 +4484,7 @@
   test/core/end2end/end2end_test_utils.c
   test/core/end2end/tests/authority_not_supported.c
   test/core/end2end/tests/bad_hostname.c
+  test/core/end2end/tests/bad_ping.c
   test/core/end2end/tests/binary_metadata.c
   test/core/end2end/tests/cancel_after_accept.c
   test/core/end2end/tests/cancel_after_client_done.c
diff --git a/Makefile b/Makefile
index 8bad909..5ad0557 100644
--- a/Makefile
+++ b/Makefile
@@ -8221,6 +8221,7 @@
     test/core/end2end/end2end_test_utils.c \
     test/core/end2end/tests/authority_not_supported.c \
     test/core/end2end/tests/bad_hostname.c \
+    test/core/end2end/tests/bad_ping.c \
     test/core/end2end/tests/binary_metadata.c \
     test/core/end2end/tests/call_creds.c \
     test/core/end2end/tests/cancel_after_accept.c \
@@ -8313,6 +8314,7 @@
     test/core/end2end/end2end_test_utils.c \
     test/core/end2end/tests/authority_not_supported.c \
     test/core/end2end/tests/bad_hostname.c \
+    test/core/end2end/tests/bad_ping.c \
     test/core/end2end/tests/binary_metadata.c \
     test/core/end2end/tests/cancel_after_accept.c \
     test/core/end2end/tests/cancel_after_client_done.c \
diff --git a/include/grpc++/impl/codegen/call.h b/include/grpc++/impl/codegen/call.h
index a3f2be6..be6857c 100644
--- a/include/grpc++/impl/codegen/call.h
+++ b/include/grpc++/impl/codegen/call.h
@@ -528,6 +528,7 @@
   void ClientRecvStatus(ClientContext* context, Status* status) {
     metadata_map_ = &context->trailing_metadata_;
     recv_status_ = status;
+    status_details_ = g_core_codegen_interface->grpc_empty_slice();
   }
 
  protected:
diff --git a/include/grpc++/impl/codegen/core_codegen.h b/include/grpc++/impl/codegen/core_codegen.h
index 754bf14..6bf9512 100644
--- a/include/grpc++/impl/codegen/core_codegen.h
+++ b/include/grpc++/impl/codegen/core_codegen.h
@@ -76,6 +76,7 @@
   grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
                                                 size_t nslices) override;
 
+  grpc_slice grpc_empty_slice() override;
   grpc_slice grpc_slice_malloc(size_t length) override;
   void grpc_slice_unref(grpc_slice slice) override;
   grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) override;
diff --git a/include/grpc++/impl/codegen/core_codegen_interface.h b/include/grpc++/impl/codegen/core_codegen_interface.h
index 45ea040..e111d59 100644
--- a/include/grpc++/impl/codegen/core_codegen_interface.h
+++ b/include/grpc++/impl/codegen/core_codegen_interface.h
@@ -94,6 +94,7 @@
   virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
                                                         size_t nslices) = 0;
 
+  virtual grpc_slice grpc_empty_slice() = 0;
   virtual grpc_slice grpc_slice_malloc(size_t length) = 0;
   virtual void grpc_slice_unref(grpc_slice slice) = 0;
   virtual grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) = 0;
diff --git a/include/grpc/impl/codegen/grpc_types.h b/include/grpc/impl/codegen/grpc_types.h
index 5beac83..8a8b206 100644
--- a/include/grpc/impl/codegen/grpc_types.h
+++ b/include/grpc/impl/codegen/grpc_types.h
@@ -205,15 +205,25 @@
      a data frame or header frame) */
 #define GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA \
   "grpc.http2.max_pings_without_data"
+/** How many misbehaving pings the server can bear before sending goaway and
+    closing the transport?
+    (0 indicates that the server can bear an infinite number of misbehaving
+     pings) */
+#define GRPC_ARG_HTTP2_MAX_PING_STRIKES "grpc.http2.max_ping_strikes"
+/** Minimum allowed time between two pings without sending any data frame. Int
+    valued, seconds */
+#define GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS \
+  "grpc.http2.min_ping_interval_without_data_ms"
 /** How much data are we willing to queue up per stream if
     GRPC_WRITE_BUFFER_HINT is set? This is an upper bound */
 #define GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE "grpc.http2.write_buffer_size"
-/** After a duration of this time the client pings the server to see if the
-    transport is still alive. Int valued, seconds. */
-#define GRPC_ARG_CLIENT_KEEPALIVE_TIME_S "grpc.client_keepalive_time"
-/** After waiting for a duration of this time, if the client does not receive
-    the ping ack, it will close the transport. Int valued, seconds. */
-#define GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S "grpc.client_keepalive_timeout"
+/** After a duration of this time the client/server pings its peer to see if the
+    transport is still alive. Int valued, milliseconds. */
+#define GRPC_ARG_KEEPALIVE_TIME_MS "grpc.keepalive_time_ms"
+/** After waiting for a duration of this time, if the keepalive ping sender does
+    not receive the ping ack, it will close the transport. Int valued,
+    milliseconds. */
+#define GRPC_ARG_KEEPALIVE_TIMEOUT_MS "grpc.keepalive_timeout_ms"
 /** Is it permissible to send keepalive pings without any outstanding streams.
     Int valued, 0(false)/1(true). */
 #define GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS \
diff --git a/src/core/ext/filters/client_channel/client_channel.c b/src/core/ext/filters/client_channel/client_channel.c
index 93ad53a..83e3b8f 100644
--- a/src/core/ext/filters/client_channel/client_channel.c
+++ b/src/core/ext/filters/client_channel/client_channel.c
@@ -914,14 +914,14 @@
         .arena = calld->arena};
     grpc_error *new_error = grpc_connected_subchannel_create_call(
         exec_ctx, calld->connected_subchannel, &call_args, &subchannel_call);
-    if (new_error != GRPC_ERROR_NONE) {
-      new_error = grpc_error_add_child(new_error, error);
-      subchannel_call = CANCELLED_CALL;
-      fail_locked(exec_ctx, calld, new_error);
-    }
     gpr_atm_rel_store(&calld->subchannel_call,
                       (gpr_atm)(uintptr_t)subchannel_call);
-    retry_waiting_locked(exec_ctx, calld);
+    if (new_error != GRPC_ERROR_NONE) {
+      new_error = grpc_error_add_child(new_error, error);
+      fail_locked(exec_ctx, calld, new_error);
+    } else {
+      retry_waiting_locked(exec_ctx, calld);
+    }
   }
   GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "pick_subchannel");
 }
@@ -1152,16 +1152,16 @@
         .arena = calld->arena};
     grpc_error *error = grpc_connected_subchannel_create_call(
         exec_ctx, calld->connected_subchannel, &call_args, &subchannel_call);
-    if (error != GRPC_ERROR_NONE) {
-      subchannel_call = CANCELLED_CALL;
-      fail_locked(exec_ctx, calld, GRPC_ERROR_REF(error));
-      grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, op, error);
-    }
     gpr_atm_rel_store(&calld->subchannel_call,
                       (gpr_atm)(uintptr_t)subchannel_call);
-    retry_waiting_locked(exec_ctx, calld);
-    /* recurse to retry */
-    start_transport_stream_op_batch_locked_inner(exec_ctx, op, elem);
+    if (error != GRPC_ERROR_NONE) {
+      fail_locked(exec_ctx, calld, GRPC_ERROR_REF(error));
+      grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, op, error);
+    } else {
+      retry_waiting_locked(exec_ctx, calld);
+      /* recurse to retry */
+      start_transport_stream_op_batch_locked_inner(exec_ctx, op, elem);
+    }
     /* early out */
     return;
   }
diff --git a/src/core/ext/filters/client_channel/subchannel.c b/src/core/ext/filters/client_channel/subchannel.c
index 8086cdb..9a7a7a0 100644
--- a/src/core/ext/filters/client_channel/subchannel.c
+++ b/src/core/ext/filters/client_channel/subchannel.c
@@ -769,7 +769,7 @@
   *call = gpr_arena_alloc(
       args->arena, sizeof(grpc_subchannel_call) + chanstk->call_stack_size);
   grpc_call_stack *callstk = SUBCHANNEL_CALL_TO_CALL_STACK(*call);
-  (*call)->connection = con;  // Ref is added below.
+  (*call)->connection = GRPC_CONNECTED_SUBCHANNEL_REF(con, "subchannel_call");
   const grpc_call_element_args call_args = {.call_stack = callstk,
                                             .server_transport_data = NULL,
                                             .context = NULL,
@@ -782,11 +782,8 @@
   if (error != GRPC_ERROR_NONE) {
     const char *error_string = grpc_error_string(error);
     gpr_log(GPR_ERROR, "error: %s", error_string);
-
-    gpr_free(*call);
     return error;
   }
-  GRPC_CONNECTED_SUBCHANNEL_REF(con, "subchannel_call");
   grpc_call_stack_set_pollset_or_pollset_set(exec_ctx, callstk, args->pollent);
   return GRPC_ERROR_NONE;
 }
diff --git a/src/core/ext/filters/max_age/max_age_filter.c b/src/core/ext/filters/max_age/max_age_filter.c
index b03cb0b..a045f0a 100644
--- a/src/core/ext/filters/max_age/max_age_filter.c
+++ b/src/core/ext/filters/max_age/max_age_filter.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/lib/channel/message_size_filter.h"
+#include "src/core/ext/filters/max_age/max_age_filter.h"
 
 #include <limits.h>
 #include <string.h>
@@ -41,11 +41,11 @@
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/transport/http2_errors.h"
-#include "src/core/lib/transport/service_config.h"
 
 #define DEFAULT_MAX_CONNECTION_AGE_MS INT_MAX
 #define DEFAULT_MAX_CONNECTION_AGE_GRACE_MS INT_MAX
 #define DEFAULT_MAX_CONNECTION_IDLE_MS INT_MAX
+#define MAX_CONNECTION_AGE_JITTER 0.1
 
 typedef struct channel_data {
   /* We take a reference to the channel stack for the timer callback */
@@ -254,6 +254,21 @@
   }
 }
 
+/* A random jitter of +/-10% will be added to MAX_CONNECTION_AGE to spread out
+   connection storms. Note that the MAX_CONNECTION_AGE option without jitter
+   would not create connection storms by itself, but if there happened to be a
+   connection storm it could cause it to repeat at a fixed period. */
+static int add_random_max_connection_age_jitter(int value) {
+  /* generate a random number between 1 - MAX_CONNECTION_AGE_JITTER and
+     1 + MAX_CONNECTION_AGE_JITTER */
+  double multiplier = rand() * MAX_CONNECTION_AGE_JITTER * 2.0 / RAND_MAX +
+                      1.0 - MAX_CONNECTION_AGE_JITTER;
+  double result = multiplier * value;
+  /* INT_MAX - 0.5 converts the value to float, so that result will not be
+     cast to int implicitly before the comparison. */
+  return result > INT_MAX - 0.5 ? INT_MAX : (int)result;
+}
+
 /* Constructor for call_data. */
 static grpc_error* init_call_elem(grpc_exec_ctx* exec_ctx,
                                   grpc_call_element* elem,
@@ -283,7 +298,9 @@
   chand->max_connection_age =
       DEFAULT_MAX_CONNECTION_AGE_MS == INT_MAX
           ? gpr_inf_future(GPR_TIMESPAN)
-          : gpr_time_from_millis(DEFAULT_MAX_CONNECTION_AGE_MS, GPR_TIMESPAN);
+          : gpr_time_from_millis(add_random_max_connection_age_jitter(
+                                     DEFAULT_MAX_CONNECTION_AGE_MS),
+                                 GPR_TIMESPAN);
   chand->max_connection_age_grace =
       DEFAULT_MAX_CONNECTION_AGE_GRACE_MS == INT_MAX
           ? gpr_inf_future(GPR_TIMESPAN)
@@ -300,8 +317,10 @@
           &args->channel_args->args[i],
           (grpc_integer_options){DEFAULT_MAX_CONNECTION_AGE_MS, 1, INT_MAX});
       chand->max_connection_age =
-          value == INT_MAX ? gpr_inf_future(GPR_TIMESPAN)
-                           : gpr_time_from_millis(value, GPR_TIMESPAN);
+          value == INT_MAX
+              ? gpr_inf_future(GPR_TIMESPAN)
+              : gpr_time_from_millis(
+                    add_random_max_connection_age_jitter(value), GPR_TIMESPAN);
     } else if (0 == strcmp(args->channel_args->args[i].key,
                            GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS)) {
       const int value = grpc_channel_arg_get_integer(
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
index a8e320d..e2816b0 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@@ -69,13 +69,21 @@
 #define MAX_WRITE_BUFFER_SIZE (64 * 1024 * 1024)
 #define DEFAULT_MAX_HEADER_LIST_SIZE (16 * 1024)
 
-#define DEFAULT_CLIENT_KEEPALIVE_TIME_S INT_MAX
-#define DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_S 20
+#define DEFAULT_CLIENT_KEEPALIVE_TIME_MS INT_MAX
+#define DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_MS 20000 /* 20 seconds */
+#define DEFAULT_SERVER_KEEPALIVE_TIME_MS 7200000  /* 2 hours */
+#define DEFAULT_SERVER_KEEPALIVE_TIMEOUT_MS 20000 /* 20 seconds */
 #define DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS false
+#define KEEPALIVE_TIME_BACKOFF_MULTIPLIER 2
 
-static int g_default_client_keepalive_time_s = DEFAULT_CLIENT_KEEPALIVE_TIME_S;
-static int g_default_client_keepalive_timeout_s =
-    DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_S;
+static int g_default_client_keepalive_time_ms =
+    DEFAULT_CLIENT_KEEPALIVE_TIME_MS;
+static int g_default_client_keepalive_timeout_ms =
+    DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_MS;
+static int g_default_server_keepalive_time_ms =
+    DEFAULT_SERVER_KEEPALIVE_TIME_MS;
+static int g_default_server_keepalive_timeout_ms =
+    DEFAULT_SERVER_KEEPALIVE_TIMEOUT_MS;
 static bool g_default_keepalive_permit_without_calls =
     DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS;
 
@@ -153,6 +161,8 @@
 
 #define DEFAULT_MIN_TIME_BETWEEN_PINGS_MS 0
 #define DEFAULT_MAX_PINGS_BETWEEN_DATA 3
+#define DEFAULT_MAX_PING_STRIKES 2
+#define DEFAULT_MIN_PING_INTERVAL_WITHOUT_DATA_MS 300000 /* 5 minutes */
 
 /** keepalive-relevant functions */
 static void init_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
@@ -351,19 +361,35 @@
       .max_pings_without_data = DEFAULT_MAX_PINGS_BETWEEN_DATA,
       .min_time_between_pings =
           gpr_time_from_millis(DEFAULT_MIN_TIME_BETWEEN_PINGS_MS, GPR_TIMESPAN),
+      .max_ping_strikes = DEFAULT_MAX_PING_STRIKES,
+      .min_ping_interval_without_data = gpr_time_from_millis(
+          DEFAULT_MIN_PING_INTERVAL_WITHOUT_DATA_MS, GPR_TIMESPAN),
   };
 
-  /* client-side keepalive setting */
-  t->keepalive_time =
-      g_default_client_keepalive_time_s == INT_MAX
-          ? gpr_inf_future(GPR_TIMESPAN)
-          : gpr_time_from_seconds(g_default_client_keepalive_time_s,
-                                  GPR_TIMESPAN);
-  t->keepalive_timeout =
-      g_default_client_keepalive_timeout_s == INT_MAX
-          ? gpr_inf_future(GPR_TIMESPAN)
-          : gpr_time_from_seconds(g_default_client_keepalive_timeout_s,
-                                  GPR_TIMESPAN);
+  /* Keepalive setting */
+  if (t->is_client) {
+    t->keepalive_time =
+        g_default_client_keepalive_time_ms == INT_MAX
+            ? gpr_inf_future(GPR_TIMESPAN)
+            : gpr_time_from_millis(g_default_client_keepalive_time_ms,
+                                   GPR_TIMESPAN);
+    t->keepalive_timeout =
+        g_default_client_keepalive_timeout_ms == INT_MAX
+            ? gpr_inf_future(GPR_TIMESPAN)
+            : gpr_time_from_millis(g_default_client_keepalive_timeout_ms,
+                                   GPR_TIMESPAN);
+  } else {
+    t->keepalive_time =
+        g_default_server_keepalive_time_ms == INT_MAX
+            ? gpr_inf_future(GPR_TIMESPAN)
+            : gpr_time_from_millis(g_default_server_keepalive_time_ms,
+                                   GPR_TIMESPAN);
+    t->keepalive_timeout =
+        g_default_server_keepalive_timeout_ms == INT_MAX
+            ? gpr_inf_future(GPR_TIMESPAN)
+            : gpr_time_from_millis(g_default_server_keepalive_timeout_ms,
+                                   GPR_TIMESPAN);
+  }
   t->keepalive_permit_without_calls = g_default_keepalive_permit_without_calls;
 
   if (channel_args) {
@@ -397,6 +423,11 @@
             &channel_args->args[i],
             (grpc_integer_options){DEFAULT_MAX_PINGS_BETWEEN_DATA, 0, INT_MAX});
       } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_HTTP2_MAX_PING_STRIKES)) {
+        t->ping_policy.max_ping_strikes = grpc_channel_arg_get_integer(
+            &channel_args->args[i],
+            (grpc_integer_options){DEFAULT_MAX_PING_STRIKES, 0, INT_MAX});
+      } else if (0 == strcmp(channel_args->args[i].key,
                              GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS)) {
         t->ping_policy.min_time_between_pings = gpr_time_from_millis(
             grpc_channel_arg_get_integer(
@@ -404,6 +435,15 @@
                 (grpc_integer_options){DEFAULT_MIN_TIME_BETWEEN_PINGS_MS, 0,
                                        INT_MAX}),
             GPR_TIMESPAN);
+      } else if (0 ==
+                 strcmp(channel_args->args[i].key,
+                        GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS)) {
+        t->ping_policy.min_ping_interval_without_data = gpr_time_from_millis(
+            grpc_channel_arg_get_integer(
+                &channel_args->args[i],
+                (grpc_integer_options){
+                    DEFAULT_MIN_PING_INTERVAL_WITHOUT_DATA_MS, 0, INT_MAX}),
+            GPR_TIMESPAN);
       } else if (0 == strcmp(channel_args->args[i].key,
                              GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE)) {
         t->write_buffer_size = (uint32_t)grpc_channel_arg_get_integer(
@@ -414,23 +454,27 @@
         t->enable_bdp_probe = grpc_channel_arg_get_integer(
             &channel_args->args[i], (grpc_integer_options){1, 0, 1});
       } else if (0 == strcmp(channel_args->args[i].key,
-                             GRPC_ARG_CLIENT_KEEPALIVE_TIME_S)) {
+                             GRPC_ARG_KEEPALIVE_TIME_MS)) {
         const int value = grpc_channel_arg_get_integer(
             &channel_args->args[i],
-            (grpc_integer_options){g_default_client_keepalive_time_s, 1,
-                                   INT_MAX});
+            (grpc_integer_options){t->is_client
+                                       ? g_default_client_keepalive_time_ms
+                                       : g_default_server_keepalive_time_ms,
+                                   1, INT_MAX});
         t->keepalive_time = value == INT_MAX
                                 ? gpr_inf_future(GPR_TIMESPAN)
-                                : gpr_time_from_seconds(value, GPR_TIMESPAN);
+                                : gpr_time_from_millis(value, GPR_TIMESPAN);
       } else if (0 == strcmp(channel_args->args[i].key,
-                             GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S)) {
+                             GRPC_ARG_KEEPALIVE_TIMEOUT_MS)) {
         const int value = grpc_channel_arg_get_integer(
             &channel_args->args[i],
-            (grpc_integer_options){g_default_client_keepalive_timeout_s, 0,
-                                   INT_MAX});
+            (grpc_integer_options){t->is_client
+                                       ? g_default_client_keepalive_timeout_ms
+                                       : g_default_server_keepalive_timeout_ms,
+                                   0, INT_MAX});
         t->keepalive_timeout = value == INT_MAX
                                    ? gpr_inf_future(GPR_TIMESPAN)
-                                   : gpr_time_from_seconds(value, GPR_TIMESPAN);
+                                   : gpr_time_from_millis(value, GPR_TIMESPAN);
       } else if (0 == strcmp(channel_args->args[i].key,
                              GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS)) {
         t->keepalive_permit_without_calls =
@@ -488,8 +532,11 @@
       t->ping_policy.max_pings_without_data;
   t->ping_state.is_delayed_ping_timer_set = false;
 
-  /** Start client-side keepalive pings */
-  if (t->is_client) {
+  t->ping_recv_state.last_ping_recv_time = gpr_inf_past(GPR_CLOCK_MONOTONIC);
+  t->ping_recv_state.ping_strikes = 0;
+
+  /* Start keepalive pings */
+  if (gpr_time_cmp(t->keepalive_time, gpr_inf_future(GPR_TIMESPAN)) != 0) {
     t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_WAITING;
     GRPC_CHTTP2_REF_TRANSPORT(t, "init keepalive ping");
     grpc_timer_init(
@@ -918,6 +965,26 @@
   // GRPC_CHTTP2_IF_TRACING(
   //     gpr_log(GPR_DEBUG, "got goaway [%d]: %s", goaway_error, msg));
   t->seen_goaway = 1;
+
+  /* When a client receives a GOAWAY with error code ENHANCE_YOUR_CALM and debug
+   * data equal to “too_many_pings”, it should log the occurrence at a log level
+   * that is enabled by default and double the configured KEEPALIVE_TIME used
+   * for new connections on that channel. */
+  if (t->is_client && goaway_error == GRPC_HTTP2_ENHANCE_YOUR_CALM &&
+      grpc_slice_str_cmp(goaway_text, "too_many_pings") == 0) {
+    gpr_log(GPR_ERROR,
+            "Received a GOAWAY with error code ENHANCE_YOUR_CALM and debug "
+            "data equal to \"too_many_pings\"");
+    double current_keepalive_time_ms =
+        gpr_timespec_to_micros(t->keepalive_time) / 1000;
+    t->keepalive_time =
+        current_keepalive_time_ms > INT_MAX / KEEPALIVE_TIME_BACKOFF_MULTIPLIER
+            ? gpr_inf_future(GPR_TIMESPAN)
+            : gpr_time_from_millis((int64_t)(current_keepalive_time_ms *
+                                             KEEPALIVE_TIME_BACKOFF_MULTIPLIER),
+                                   GPR_TIMESPAN);
+  }
+
   /* lie: use transient failure from the transport to indicate goaway has been
    * received */
   connectivity_state_set(
@@ -1459,6 +1526,21 @@
   GRPC_ERROR_UNREF(error);
 }
 
+void grpc_chttp2_add_ping_strike(grpc_exec_ctx *exec_ctx,
+                                 grpc_chttp2_transport *t) {
+  gpr_log(GPR_DEBUG, "PING strike");
+  if (++t->ping_recv_state.ping_strikes > t->ping_policy.max_ping_strikes &&
+      t->ping_policy.max_ping_strikes != 0) {
+    send_goaway(exec_ctx, t,
+                grpc_error_set_int(
+                    GRPC_ERROR_CREATE_FROM_STATIC_STRING("too_many_pings"),
+                    GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_ENHANCE_YOUR_CALM));
+    /*The transport will be closed after the write is done */
+    close_transport_locked(
+        exec_ctx, t, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Too many pings"));
+  }
+}
+
 static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx,
                                         void *stream_op,
                                         grpc_error *error_ignored) {
@@ -2125,6 +2207,10 @@
   if (grpc_http_trace) {
     gpr_log(GPR_DEBUG, "%s: Start BDP ping", t->peer_string);
   }
+  /* Reset the keepalive ping timer */
+  if (t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_WAITING) {
+    grpc_timer_cancel(exec_ctx, &t->keepalive_ping_timer);
+  }
   grpc_bdp_estimator_start_ping(&t->bdp_estimator);
 }
 
@@ -2139,20 +2225,32 @@
   GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "bdp_ping");
 }
 
-void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args) {
+void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args,
+                                               bool is_client) {
   size_t i;
   if (args) {
     for (i = 0; i < args->num_args; i++) {
-      if (0 == strcmp(args->args[i].key, GRPC_ARG_CLIENT_KEEPALIVE_TIME_S)) {
-        g_default_client_keepalive_time_s = grpc_channel_arg_get_integer(
-            &args->args[i], (grpc_integer_options){
-                                g_default_client_keepalive_time_s, 1, INT_MAX});
-      } else if (0 == strcmp(args->args[i].key,
-                             GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S)) {
-        g_default_client_keepalive_timeout_s = grpc_channel_arg_get_integer(
+      if (0 == strcmp(args->args[i].key, GRPC_ARG_KEEPALIVE_TIME_MS)) {
+        const int value = grpc_channel_arg_get_integer(
             &args->args[i],
-            (grpc_integer_options){g_default_client_keepalive_timeout_s, 0,
+            (grpc_integer_options){g_default_client_keepalive_time_ms, 1,
                                    INT_MAX});
+        if (is_client) {
+          g_default_client_keepalive_time_ms = value;
+        } else {
+          g_default_server_keepalive_time_ms = value;
+        }
+      } else if (0 ==
+                 strcmp(args->args[i].key, GRPC_ARG_KEEPALIVE_TIMEOUT_MS)) {
+        const int value = grpc_channel_arg_get_integer(
+            &args->args[i],
+            (grpc_integer_options){g_default_client_keepalive_timeout_ms, 0,
+                                   INT_MAX});
+        if (is_client) {
+          g_default_client_keepalive_timeout_ms = value;
+        } else {
+          g_default_server_keepalive_timeout_ms = value;
+        }
       } else if (0 == strcmp(args->args[i].key,
                              GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS)) {
         g_default_keepalive_permit_without_calls =
@@ -2170,7 +2268,8 @@
   grpc_chttp2_transport *t = arg;
   GPR_ASSERT(t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_WAITING);
   if (error == GRPC_ERROR_NONE && !(t->destroying || t->closed)) {
-    if (t->keepalive_permit_without_calls || t->stream_map.count > 0) {
+    if (t->keepalive_permit_without_calls ||
+        grpc_chttp2_stream_map_size(&t->stream_map) > 0) {
       t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_PINGING;
       GRPC_CHTTP2_REF_TRANSPORT(t, "keepalive ping end");
       send_ping_locked(exec_ctx, t, GRPC_CHTTP2_PING_ON_NEXT_WRITE,
@@ -2183,6 +2282,13 @@
           gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), t->keepalive_time),
           &t->init_keepalive_ping_locked, gpr_now(GPR_CLOCK_MONOTONIC));
     }
+  } else if (error == GRPC_ERROR_CANCELLED && !(t->destroying || t->closed)) {
+    /* The keepalive ping timer may be cancelled by bdp */
+    GRPC_CHTTP2_REF_TRANSPORT(t, "init keepalive ping");
+    grpc_timer_init(
+        exec_ctx, &t->keepalive_ping_timer,
+        gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), t->keepalive_time),
+        &t->init_keepalive_ping_locked, gpr_now(GPR_CLOCK_MONOTONIC));
   }
   GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "init keepalive ping");
 }
@@ -2224,8 +2330,8 @@
                                               "keepalive watchdog timeout"));
     }
   } else {
-    /** The watchdog timer should have been cancelled by
-        finish_keepalive_ping_locked. */
+    /* The watchdog timer should have been cancelled by
+     * finish_keepalive_ping_locked. */
     if (error != GRPC_ERROR_CANCELLED) {
       gpr_log(GPR_ERROR, "keepalive_ping_end state error: %d (expect: %d)",
               t->keepalive_state, GRPC_CHTTP2_KEEPALIVE_STATE_PINGING);
diff --git a/src/core/ext/transport/chttp2/transport/frame_ping.c b/src/core/ext/transport/chttp2/transport/frame_ping.c
index 46dafdb..6016e43 100644
--- a/src/core/ext/transport/chttp2/transport/frame_ping.c
+++ b/src/core/ext/transport/chttp2/transport/frame_ping.c
@@ -103,6 +103,28 @@
     if (p->is_ack) {
       grpc_chttp2_ack_ping(exec_ctx, t, p->opaque_8bytes);
     } else {
+      if (!t->is_client) {
+        gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+        gpr_timespec next_allowed_ping =
+            gpr_time_add(t->ping_recv_state.last_ping_recv_time,
+                         t->ping_policy.min_ping_interval_without_data);
+
+        if (t->keepalive_permit_without_calls == 0 &&
+            grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
+          /* According to RFC1122, the interval of TCP Keep-Alive is default to
+             no less than two hours. When there is no outstanding streams, we
+             restrict the number of PINGS equivalent to TCP Keep-Alive. */
+          next_allowed_ping =
+              gpr_time_add(t->ping_recv_state.last_ping_recv_time,
+                           gpr_time_from_seconds(7200, GPR_TIMESPAN));
+        }
+
+        if (gpr_time_cmp(next_allowed_ping, now) > 0) {
+          grpc_chttp2_add_ping_strike(exec_ctx, t);
+        }
+
+        t->ping_recv_state.last_ping_recv_time = now;
+      }
       if (!g_disable_ping_ack) {
         if (t->ping_ack_count == t->ping_ack_capacity) {
           t->ping_ack_capacity = GPR_MAX(t->ping_ack_capacity * 3 / 2, 3);
diff --git a/src/core/ext/transport/chttp2/transport/internal.h b/src/core/ext/transport/chttp2/transport/internal.h
index 50993e4..6eb848b 100644
--- a/src/core/ext/transport/chttp2/transport/internal.h
+++ b/src/core/ext/transport/chttp2/transport/internal.h
@@ -97,6 +97,8 @@
 typedef struct {
   gpr_timespec min_time_between_pings;
   int max_pings_without_data;
+  int max_ping_strikes;
+  gpr_timespec min_ping_interval_without_data;
 } grpc_chttp2_repeated_ping_policy;
 
 typedef struct {
@@ -106,6 +108,11 @@
   bool is_delayed_ping_timer_set;
 } grpc_chttp2_repeated_ping_state;
 
+typedef struct {
+  gpr_timespec last_ping_recv_time;
+  int ping_strikes;
+} grpc_chttp2_server_ping_recv_state;
+
 /* deframer state for the overall http2 stream of bytes */
 typedef enum {
   /* prefix: one entry per http2 connection prefix byte */
@@ -316,6 +323,7 @@
   size_t ping_ack_count;
   size_t ping_ack_capacity;
   uint64_t *ping_acks;
+  grpc_chttp2_server_ping_recv_state ping_recv_state;
 
   /** parser for headers */
   grpc_chttp2_hpack_parser hpack_parser;
@@ -792,6 +800,13 @@
 void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                           uint64_t id);
 
+/** Add a new ping strike to ping_recv_state.ping_strikes. If
+    ping_recv_state.ping_strikes > ping_policy.max_ping_strikes, it sends GOAWAY
+    with error code ENHANCE_YOUR_CALM and additional debug data resembling
+    “too_many_pings” followed by immediately closing the connection. */
+void grpc_chttp2_add_ping_strike(grpc_exec_ctx *exec_ctx,
+                                 grpc_chttp2_transport *t);
+
 typedef enum {
   /* don't initiate a transport write, but piggyback on the next one */
   GRPC_CHTTP2_STREAM_WRITE_PIGGYBACK,
@@ -831,6 +846,7 @@
 
 /** Set the default keepalive configurations, must only be called at
     initialization */
-void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args);
+void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args,
+                                               bool is_client);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H */
diff --git a/src/core/ext/transport/chttp2/transport/writing.c b/src/core/ext/transport/chttp2/transport/writing.c
index 0869056..be41b3d 100644
--- a/src/core/ext/transport/chttp2/transport/writing.c
+++ b/src/core/ext/transport/chttp2/transport/writing.c
@@ -229,6 +229,11 @@
       now_writing = true;
       t->ping_state.pings_before_data_required =
           t->ping_policy.max_pings_without_data;
+      if (!t->is_client) {
+        t->ping_recv_state.last_ping_recv_time =
+            gpr_inf_past(GPR_CLOCK_MONOTONIC);
+        t->ping_recv_state.ping_strikes = 0;
+      }
     }
     /* send any window updates */
     if (s->announce_window > 0) {
@@ -238,6 +243,11 @@
                                 s->id, s->announce_window, &s->stats.outgoing));
       t->ping_state.pings_before_data_required =
           t->ping_policy.max_pings_without_data;
+      if (!t->is_client) {
+        t->ping_recv_state.last_ping_recv_time =
+            gpr_inf_past(GPR_CLOCK_MONOTONIC);
+        t->ping_recv_state.ping_strikes = 0;
+      }
       GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", t, s, announce_window, announce);
     }
     if (sent_initial_metadata) {
@@ -270,6 +280,11 @@
                                            send_bytes);
           t->ping_state.pings_before_data_required =
               t->ping_policy.max_pings_without_data;
+          if (!t->is_client) {
+            t->ping_recv_state.last_ping_recv_time =
+                gpr_inf_past(GPR_CLOCK_MONOTONIC);
+            t->ping_recv_state.ping_strikes = 0;
+          }
           if (is_last_frame) {
             s->send_trailing_metadata = NULL;
             s->sent_trailing_metadata = true;
@@ -345,6 +360,11 @@
                                           0, announced, &throwaway_stats));
     t->ping_state.pings_before_data_required =
         t->ping_policy.max_pings_without_data;
+    if (!t->is_client) {
+      t->ping_recv_state.last_ping_recv_time =
+          gpr_inf_past(GPR_CLOCK_MONOTONIC);
+      t->ping_recv_state.ping_strikes = 0;
+    }
   }
 
   for (size_t i = 0; i < t->ping_ack_count; i++) {
diff --git a/src/core/ext/transport/cronet/transport/cronet_transport.c b/src/core/ext/transport/cronet/transport/cronet_transport.c
index 9bd8914..0b91895 100644
--- a/src/core/ext/transport/cronet/transport/cronet_transport.c
+++ b/src/core/ext/transport/cronet/transport/cronet_transport.c
@@ -1178,7 +1178,7 @@
       if (stream_state->rs.compressed) {
         stream_state->rs.sbs.base.flags = GRPC_WRITE_INTERNAL_COMPRESS;
       }
-      *((grpc_byte_buffer **)stream_op->recv_message) =
+      *((grpc_byte_buffer **)stream_op->payload->recv_message.recv_message) =
           (grpc_byte_buffer *)&stream_state->rs.sbs;
       grpc_closure_sched(exec_ctx,
                          stream_op->payload->recv_message.recv_message_ready,
diff --git a/src/core/lib/iomgr/ev_epoll_linux.c b/src/core/lib/iomgr/ev_epoll_linux.c
index 7014b98..e5cf54f 100644
--- a/src/core/lib/iomgr/ev_epoll_linux.c
+++ b/src/core/lib/iomgr/ev_epoll_linux.c
@@ -1717,7 +1717,7 @@
   worker.pt_id = pthread_self();
   gpr_atm_no_barrier_store(&worker.is_kicked, (gpr_atm)0);
 
-  *worker_hdl = &worker;
+  if (worker_hdl) *worker_hdl = &worker;
 
   gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset);
   gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
@@ -1795,7 +1795,7 @@
     gpr_mu_lock(&pollset->po.mu);
   }
 
-  *worker_hdl = NULL;
+  if (worker_hdl) *worker_hdl = NULL;
 
   gpr_tls_set(&g_current_thread_pollset, (intptr_t)0);
   gpr_tls_set(&g_current_thread_worker, (intptr_t)0);
diff --git a/src/core/lib/iomgr/ev_poll_posix.c b/src/core/lib/iomgr/ev_poll_posix.c
index d90f223..9834cdd 100644
--- a/src/core/lib/iomgr/ev_poll_posix.c
+++ b/src/core/lib/iomgr/ev_poll_posix.c
@@ -871,7 +871,7 @@
                                 grpc_pollset_worker **worker_hdl,
                                 gpr_timespec now, gpr_timespec deadline) {
   grpc_pollset_worker worker;
-  *worker_hdl = &worker;
+  if (worker_hdl) *worker_hdl = &worker;
   grpc_error *error = GRPC_ERROR_NONE;
 
   /* Avoid malloc for small number of elements. */
@@ -1092,7 +1092,7 @@
       gpr_mu_lock(&pollset->mu);
     }
   }
-  *worker_hdl = NULL;
+  if (worker_hdl) *worker_hdl = NULL;
   GPR_TIMER_END("pollset_work", 0);
   GRPC_LOG_IF_ERROR("pollset_work", GRPC_ERROR_REF(error));
   return error;
diff --git a/src/core/lib/iomgr/pollset.h b/src/core/lib/iomgr/pollset.h
index e19ce69..9bf3cda 100644
--- a/src/core/lib/iomgr/pollset.h
+++ b/src/core/lib/iomgr/pollset.h
@@ -75,6 +75,10 @@
    and it is guaranteed that it will not be released by grpc_pollset_work
    AFTER worker has been destroyed.
 
+   It's legal for worker to be NULL: in that case, this specific thread can not
+   be directly woken with a kick, but maybe be indirectly (with a kick against
+   the pollset as a whole).
+
    Tries not to block past deadline.
    May call grpc_closure_list_run on grpc_closure_list, without holding the
    pollset
diff --git a/src/core/lib/iomgr/pollset_windows.c b/src/core/lib/iomgr/pollset_windows.c
index 17043c1..04c6b71 100644
--- a/src/core/lib/iomgr/pollset_windows.c
+++ b/src/core/lib/iomgr/pollset_windows.c
@@ -120,7 +120,7 @@
                               grpc_pollset_worker **worker_hdl,
                               gpr_timespec now, gpr_timespec deadline) {
   grpc_pollset_worker worker;
-  *worker_hdl = &worker;
+  if (worker_hdl) *worker_hdl = &worker;
 
   int added_worker = 0;
   worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
@@ -185,7 +185,7 @@
     remove_worker(&worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
   }
   gpr_cv_destroy(&worker.cv);
-  *worker_hdl = NULL;
+  if (worker_hdl) *worker_hdl = NULL;
   return GRPC_ERROR_NONE;
 }
 
diff --git a/src/core/lib/security/transport/security_handshaker.c b/src/core/lib/security/transport/security_handshaker.c
index 2f39327..509b4b5 100644
--- a/src/core/lib/security/transport/security_handshaker.c
+++ b/src/core/lib/security/transport/security_handshaker.c
@@ -287,12 +287,11 @@
   if (num_left_overs > 0) {
     /* Put the leftovers in our buffer (ownership transfered). */
     if (has_left_overs_in_current_slice) {
-      grpc_slice_buffer_add(
-          &h->left_overs,
-          grpc_slice_split_tail(&h->args->read_buffer->slices[i],
-                                consumed_slice_size));
+      grpc_slice tail = grpc_slice_split_tail(&h->args->read_buffer->slices[i],
+                                              consumed_slice_size);
+      grpc_slice_buffer_add(&h->left_overs, tail);
       /* split_tail above increments refcount. */
-      grpc_slice_unref_internal(exec_ctx, h->args->read_buffer->slices[i]);
+      grpc_slice_unref_internal(exec_ctx, tail);
     }
     grpc_slice_buffer_addn(
         &h->left_overs, &h->args->read_buffer->slices[i + 1],
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index 87787b3..c37ead2 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -175,7 +175,7 @@
   /* have we received initial metadata */
   bool has_initial_md_been_received;
 
-  batch_control active_batches[MAX_CONCURRENT_BATCHES];
+  batch_control *active_batches[MAX_CONCURRENT_BATCHES];
   grpc_transport_stream_op_batch_payload stream_op_payload;
 
   /* first idx: is_receiving, second idx: is_trailing */
@@ -1034,7 +1034,11 @@
                                              const grpc_op *ops,
                                              size_t num_ops) {
   int slot = batch_slot_for_op(ops[0].op);
-  batch_control *bctl = &call->active_batches[slot];
+  batch_control **pslot = &call->active_batches[slot];
+  if (*pslot == NULL) {
+    *pslot = gpr_arena_alloc(call->arena, sizeof(batch_control));
+  }
+  batch_control *bctl = *pslot;
   if (bctl->call != NULL) {
     return NULL;
   }
diff --git a/src/core/lib/surface/completion_queue.c b/src/core/lib/surface/completion_queue.c
index b459481..3273add 100644
--- a/src/core/lib/surface/completion_queue.c
+++ b/src/core/lib/surface/completion_queue.c
@@ -345,7 +345,6 @@
 grpc_event grpc_completion_queue_next(grpc_completion_queue *cc,
                                       gpr_timespec deadline, void *reserved) {
   grpc_event ret;
-  grpc_pollset_worker *worker = NULL;
   gpr_timespec now;
 
   GPR_TIMER_BEGIN("grpc_completion_queue_next", 0);
@@ -426,8 +425,8 @@
       gpr_mu_lock(cc->mu);
       continue;
     } else {
-      grpc_error *err = grpc_pollset_work(&exec_ctx, POLLSET_FROM_CQ(cc),
-                                          &worker, now, iteration_deadline);
+      grpc_error *err = grpc_pollset_work(&exec_ctx, POLLSET_FROM_CQ(cc), NULL,
+                                          now, iteration_deadline);
       if (err != GRPC_ERROR_NONE) {
         gpr_mu_unlock(cc->mu);
         const char *msg = grpc_error_string(err);
diff --git a/src/cpp/common/core_codegen.cc b/src/cpp/common/core_codegen.cc
index 36e4c89..43dffe7 100644
--- a/src/cpp/common/core_codegen.cc
+++ b/src/cpp/common/core_codegen.cc
@@ -111,6 +111,8 @@
   return ::grpc_raw_byte_buffer_create(slice, nslices);
 }
 
+grpc_slice CoreCodegen::grpc_empty_slice() { return ::grpc_empty_slice(); }
+
 grpc_slice CoreCodegen::grpc_slice_malloc(size_t length) {
   return ::grpc_slice_malloc(length);
 }
diff --git a/src/csharp/global.json b/src/csharp/global.json
index 32ff399..f3c33ce 100644
--- a/src/csharp/global.json
+++ b/src/csharp/global.json
@@ -1,5 +1,5 @@
 {
     "sdk": {
-        "version": "1.0.0-preview2-003121"
+        "version": "1.0.0-preview2-003131"
     }
 }
\ No newline at end of file
diff --git a/src/objective-c/tests/run_tests.sh b/src/objective-c/tests/run_tests.sh
index bd7c294..0e82bca 100755
--- a/src/objective-c/tests/run_tests.sh
+++ b/src/objective-c/tests/run_tests.sh
@@ -68,12 +68,16 @@
     -destination name="iPhone 6" \
     test | xcpretty
 
-echo "TIME:  $(date)"
-xcodebuild \
-    -workspace Tests.xcworkspace \
-    -scheme CronetUnitTests \
-    -destination name="iPhone 6" \
-    test | xcpretty
+# Temporarily disabled for (possible) flakiness on Jenkins.
+# Fix or reenable after confirmation/disconfirmation that it is the source of
+# Jenkins problem.
+
+# echo "TIME:  $(date)"
+# xcodebuild \
+#     -workspace Tests.xcworkspace \
+#     -scheme CronetUnitTests \
+#     -destination name="iPhone 6" \
+#     test | xcpretty
 
 echo "TIME:  $(date)"
 xcodebuild \
diff --git a/src/python/grpcio_reflection/MANIFEST.in b/src/python/grpcio_reflection/MANIFEST.in
new file mode 100644
index 0000000..0f2130c
--- /dev/null
+++ b/src/python/grpcio_reflection/MANIFEST.in
@@ -0,0 +1,4 @@
+include grpc_version.py
+include reflection_commands.py
+graft grpc_reflection
+global-exclude *.pyc
diff --git a/templates/tools/dockerfile/csharp_dotnetcli_deps.include b/templates/tools/dockerfile/csharp_dotnetcli_deps.include
index 058ce15..bc88d2b 100644
--- a/templates/tools/dockerfile/csharp_dotnetcli_deps.include
+++ b/templates/tools/dockerfile/csharp_dotnetcli_deps.include
@@ -1,7 +1,7 @@
 # Install dotnet SDK based on https://www.microsoft.com/net/core#debian
 RUN apt-get update && apt-get install -y curl libunwind8 gettext
-# dotnet-dev-1.0.0-preview2-003121
-RUN curl -sSL -o dotnet100.tar.gz https://go.microsoft.com/fwlink/?LinkID=809130
+# dotnet-dev-1.0.0-preview2-003131
+RUN curl -sSL -o dotnet100.tar.gz https://go.microsoft.com/fwlink/?LinkID=827530
 RUN mkdir -p /opt/dotnet && tar zxf dotnet100.tar.gz -C /opt/dotnet
 # dotnet-dev-1.0.1
 RUN curl -sSL -o dotnet101.tar.gz https://go.microsoft.com/fwlink/?LinkID=843453
diff --git a/test/core/end2end/end2end_nosec_tests.c b/test/core/end2end/end2end_nosec_tests.c
index 64bdceb..1187e59 100644
--- a/test/core/end2end/end2end_nosec_tests.c
+++ b/test/core/end2end/end2end_nosec_tests.c
@@ -49,6 +49,8 @@
 extern void authority_not_supported_pre_init(void);
 extern void bad_hostname(grpc_end2end_test_config config);
 extern void bad_hostname_pre_init(void);
+extern void bad_ping(grpc_end2end_test_config config);
+extern void bad_ping_pre_init(void);
 extern void binary_metadata(grpc_end2end_test_config config);
 extern void binary_metadata_pre_init(void);
 extern void cancel_after_accept(grpc_end2end_test_config config);
@@ -154,6 +156,7 @@
   grpc_summon_debugger_macros();
   authority_not_supported_pre_init();
   bad_hostname_pre_init();
+  bad_ping_pre_init();
   binary_metadata_pre_init();
   cancel_after_accept_pre_init();
   cancel_after_client_done_pre_init();
@@ -214,6 +217,7 @@
   if (argc <= 1) {
     authority_not_supported(config);
     bad_hostname(config);
+    bad_ping(config);
     binary_metadata(config);
     cancel_after_accept(config);
     cancel_after_client_done(config);
@@ -275,6 +279,10 @@
       bad_hostname(config);
       continue;
     }
+    if (0 == strcmp("bad_ping", argv[i])) {
+      bad_ping(config);
+      continue;
+    }
     if (0 == strcmp("binary_metadata", argv[i])) {
       binary_metadata(config);
       continue;
diff --git a/test/core/end2end/end2end_tests.c b/test/core/end2end/end2end_tests.c
index 37c1be4..966031a 100644
--- a/test/core/end2end/end2end_tests.c
+++ b/test/core/end2end/end2end_tests.c
@@ -49,6 +49,8 @@
 extern void authority_not_supported_pre_init(void);
 extern void bad_hostname(grpc_end2end_test_config config);
 extern void bad_hostname_pre_init(void);
+extern void bad_ping(grpc_end2end_test_config config);
+extern void bad_ping_pre_init(void);
 extern void binary_metadata(grpc_end2end_test_config config);
 extern void binary_metadata_pre_init(void);
 extern void call_creds(grpc_end2end_test_config config);
@@ -156,6 +158,7 @@
   grpc_summon_debugger_macros();
   authority_not_supported_pre_init();
   bad_hostname_pre_init();
+  bad_ping_pre_init();
   binary_metadata_pre_init();
   call_creds_pre_init();
   cancel_after_accept_pre_init();
@@ -217,6 +220,7 @@
   if (argc <= 1) {
     authority_not_supported(config);
     bad_hostname(config);
+    bad_ping(config);
     binary_metadata(config);
     call_creds(config);
     cancel_after_accept(config);
@@ -279,6 +283,10 @@
       bad_hostname(config);
       continue;
     }
+    if (0 == strcmp("bad_ping", argv[i])) {
+      bad_ping(config);
+      continue;
+    }
     if (0 == strcmp("binary_metadata", argv[i])) {
       binary_metadata(config);
       continue;
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 3c5068f..d1e510d 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -93,6 +93,7 @@
 END2END_TESTS = {
     'authority_not_supported': default_test_options,
     'bad_hostname': default_test_options,
+    'bad_ping': connectivity_test_options._replace(proxyable=False),
     'binary_metadata': default_test_options,
     'resource_quota_server': default_test_options._replace(large_writes=True,
                                                            proxyable=False),
diff --git a/test/core/end2end/generate_tests.bzl b/test/core/end2end/generate_tests.bzl
index 1041219..dc0925d 100755
--- a/test/core/end2end/generate_tests.bzl
+++ b/test/core/end2end/generate_tests.bzl
@@ -85,6 +85,7 @@
 # maps test names to options
 END2END_TESTS = {
     'bad_hostname': test_options(),
+    'bad_ping': test_options(),
     'binary_metadata': test_options(),
     'resource_quota_server': test_options(proxyable=False),
     'call_creds': test_options(secure=True),
diff --git a/test/core/end2end/tests/bad_ping.c b/test/core/end2end/tests/bad_ping.c
new file mode 100644
index 0000000..01a6aea
--- /dev/null
+++ b/test/core/end2end/tests/bad_ping.c
@@ -0,0 +1,237 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+
+#include "test/core/end2end/cq_verifier.h"
+
+#define MAX_PING_STRIKES 1
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, grpc_timeout_seconds_to_deadline(5),
+                                    NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+}
+
+static void test_bad_ping(grpc_end2end_test_config config) {
+  grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_arg client_a[] = {{.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS,
+                          .value.integer = 0},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
+                          .value.integer = 20},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_HTTP2_BDP_PROBE,
+                          .value.integer = 0}};
+  grpc_arg server_a[] = {
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS,
+       .value.integer = 300000 /* 5 minutes */},
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_MAX_PING_STRIKES,
+       .value.integer = MAX_PING_STRIKES}};
+  grpc_channel_args client_args = {.num_args = GPR_ARRAY_SIZE(client_a),
+                                   .args = client_a};
+  grpc_channel_args server_args = {.num_args = GPR_ARRAY_SIZE(server_a),
+                                   .args = server_a};
+
+  config.init_client(&f, &client_args);
+  config.init_server(&f, &server_args);
+
+  grpc_call *c;
+  grpc_call *s;
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(10);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->data.send_initial_metadata.metadata = NULL;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
+  cq_verify(cqv);
+
+  // Send too many pings to the server to trigger the punishment:
+  // The first ping is sent after data frames, it won't trigger a ping strike.
+  // Each of the following pings will trigger a ping strike, and we need at
+  // least (MAX_PING_STRIKES + 1) strikes to trigger the punishment. So
+  // (MAX_PING_STRIKES + 2) pings are needed here.
+  int i;
+  for (i = 200; i < 202 + MAX_PING_STRIKES; i++) {
+    grpc_channel_ping(f.client, f.cq, tag(i), NULL);
+    CQ_EXPECT_COMPLETION(cqv, tag(i), 1);
+    cq_verify(cqv);
+  }
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
+  grpc_slice status_details = grpc_slice_from_static_string("xyz");
+  op->data.send_status_from_server.status_details = &status_details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+  cq_verify(cqv);
+
+  grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
+  CQ_EXPECT_COMPLETION(cqv, tag(0xdead), 1);
+  cq_verify(cqv);
+
+  grpc_call_destroy(s);
+
+  // The connection should be closed immediately after the misbehaved pings,
+  // the in-progress RPC should fail.
+  GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "Endpoint read failed"));
+  GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+  GPR_ASSERT(was_cancelled == 1);
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+  grpc_call_destroy(c);
+  cq_verifier_destroy(cqv);
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void bad_ping(grpc_end2end_test_config config) {
+  GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION);
+  test_bad_ping(config);
+}
+
+void bad_ping_pre_init(void) {}
diff --git a/test/core/end2end/tests/filter_call_init_fails.c b/test/core/end2end/tests/filter_call_init_fails.c
index ffeb271..0c4f0dd 100644
--- a/test/core/end2end/tests/filter_call_init_fails.c
+++ b/test/core/end2end/tests/filter_call_init_fails.c
@@ -49,7 +49,9 @@
 
 enum { TIMEOUT = 200000 };
 
-static bool g_enable_filter = false;
+static bool g_enable_server_channel_filter = false;
+static bool g_enable_client_channel_filter = false;
+static bool g_enable_client_subchannel_filter = false;
 
 static void *tag(intptr_t t) { return (void *)t; }
 
@@ -105,9 +107,9 @@
   grpc_completion_queue_destroy(f->cq);
 }
 
-// Simple request via a server filter that always fails to initialize
-// the call.
-static void test_request(grpc_end2end_test_config config) {
+// Simple request via a SERVER_CHANNEL filter that always fails to
+// initialize the call.
+static void test_server_channel_filter(grpc_end2end_test_config config) {
   grpc_call *c;
   grpc_call *s;
   grpc_slice request_payload_slice =
@@ -201,6 +203,211 @@
   config.tear_down_data(&f);
 }
 
+// Simple request via a CLIENT_CHANNEL or CLIENT_DIRECT_CHANNEL filter
+// that always fails to initialize the call.
+static void test_client_channel_filter(grpc_end2end_test_config config) {
+  grpc_call *c;
+  grpc_slice request_payload_slice =
+      grpc_slice_from_copied_string("hello world");
+  grpc_byte_buffer *request_payload =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  gpr_timespec deadline = five_seconds_from_now();
+  grpc_end2end_test_fixture f =
+      begin_test(config, "filter_call_init_fails", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->data.send_initial_metadata.metadata = NULL;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = request_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_PERMISSION_DENIED);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "access denied"));
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(c);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(request_payload_recv);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+// Simple request via a CLIENT_SUBCHANNEL filter that always fails to
+// initialize the call.
+static void test_client_subchannel_filter(grpc_end2end_test_config config) {
+  grpc_call *c;
+  grpc_slice request_payload_slice =
+      grpc_slice_from_copied_string("hello world");
+  grpc_byte_buffer *request_payload =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  gpr_timespec deadline = five_seconds_from_now();
+  grpc_end2end_test_fixture f =
+      begin_test(config, "filter_call_init_fails", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->data.send_initial_metadata.metadata = NULL;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = request_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_PERMISSION_DENIED);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "access denied"));
+
+  // Reset and create a new call.  (The first call uses a different code
+  // path in client_channel.c than subsequent calls on the same channel,
+  // and we need to test both.)
+  grpc_call_destroy(c);
+  status = GRPC_STATUS_OK;
+  grpc_slice_unref(details);
+  details = grpc_empty_slice();
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(2), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(2), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_PERMISSION_DENIED);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "access denied"));
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(c);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(request_payload_recv);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
 /*******************************************************************************
  * Test filter - always fails to initialize a call
  */
@@ -244,9 +451,10 @@
  * Registration
  */
 
-static bool maybe_add_filter(grpc_exec_ctx *exec_ctx,
-                             grpc_channel_stack_builder *builder, void *arg) {
-  if (g_enable_filter) {
+static bool maybe_add_server_channel_filter(grpc_exec_ctx *exec_ctx,
+                                            grpc_channel_stack_builder *builder,
+                                            void *arg) {
+  if (g_enable_server_channel_filter) {
     // Want to add the filter as close to the end as possible, to make
     // sure that all of the filters work well together.  However, we
     // can't add it at the very end, because the connected channel filter
@@ -263,17 +471,73 @@
   }
 }
 
+static bool maybe_add_client_channel_filter(grpc_exec_ctx *exec_ctx,
+                                            grpc_channel_stack_builder *builder,
+                                            void *arg) {
+  if (g_enable_client_channel_filter) {
+    // Want to add the filter as close to the end as possible, to make
+    // sure that all of the filters work well together.  However, we
+    // can't add it at the very end, because the connected channel filter
+    // must be the last one.  So we add it right before the last one.
+    grpc_channel_stack_builder_iterator *it =
+        grpc_channel_stack_builder_create_iterator_at_last(builder);
+    GPR_ASSERT(grpc_channel_stack_builder_move_prev(it));
+    const bool retval = grpc_channel_stack_builder_add_filter_before(
+        it, &test_filter, NULL, NULL);
+    grpc_channel_stack_builder_iterator_destroy(it);
+    return retval;
+  } else {
+    return true;
+  }
+}
+
+static bool maybe_add_client_subchannel_filter(
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder, void *arg) {
+  if (g_enable_client_subchannel_filter) {
+    // Want to add the filter as close to the end as possible, to make
+    // sure that all of the filters work well together.  However, we
+    // can't add it at the very end, because the client channel filter
+    // must be the last one.  So we add it right before the last one.
+    grpc_channel_stack_builder_iterator *it =
+        grpc_channel_stack_builder_create_iterator_at_last(builder);
+    GPR_ASSERT(grpc_channel_stack_builder_move_prev(it));
+    const bool retval = grpc_channel_stack_builder_add_filter_before(
+        it, &test_filter, NULL, NULL);
+    grpc_channel_stack_builder_iterator_destroy(it);
+    return retval;
+  } else {
+    return true;
+  }
+}
+
 static void init_plugin(void) {
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
-                                   maybe_add_filter, NULL);
+                                   maybe_add_server_channel_filter, NULL);
+  grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX,
+                                   maybe_add_client_channel_filter, NULL);
+  grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX,
+                                   maybe_add_client_subchannel_filter, NULL);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX,
+                                   maybe_add_client_channel_filter, NULL);
 }
 
 static void destroy_plugin(void) {}
 
 void filter_call_init_fails(grpc_end2end_test_config config) {
-  g_enable_filter = true;
-  test_request(config);
-  g_enable_filter = false;
+  gpr_log(GPR_INFO, "Testing SERVER_CHANNEL filter.");
+  g_enable_server_channel_filter = true;
+  test_server_channel_filter(config);
+  g_enable_server_channel_filter = false;
+  gpr_log(GPR_INFO, "Testing CLIENT_CHANNEL / CLIENT_DIRECT_CHANNEL filter.");
+  g_enable_client_channel_filter = true;
+  test_client_channel_filter(config);
+  g_enable_client_channel_filter = false;
+  if (config.feature_mask & FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL) {
+    gpr_log(GPR_INFO, "Testing CLIENT_SUBCHANNEL filter.");
+    g_enable_client_subchannel_filter = true;
+    test_client_subchannel_filter(config);
+    g_enable_client_subchannel_filter = false;
+  }
 }
 
 void filter_call_init_fails_pre_init(void) {
diff --git a/test/core/end2end/tests/keepalive_timeout.c b/test/core/end2end/tests/keepalive_timeout.c
index b2252dc..bf6ca0d 100644
--- a/test/core/end2end/tests/keepalive_timeout.c
+++ b/test/core/end2end/tests/keepalive_timeout.c
@@ -112,10 +112,10 @@
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
 
   grpc_arg keepalive_args[] = {{.type = GRPC_ARG_INTEGER,
-                                .key = GRPC_ARG_CLIENT_KEEPALIVE_TIME_S,
-                                .value.integer = 2},
+                                .key = GRPC_ARG_KEEPALIVE_TIME_MS,
+                                .value.integer = 1500},
                                {.type = GRPC_ARG_INTEGER,
-                                .key = GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S,
+                                .key = GRPC_ARG_KEEPALIVE_TIMEOUT_MS,
                                 .value.integer = 0},
                                {.type = GRPC_ARG_INTEGER,
                                 .key = GRPC_ARG_HTTP2_BDP_PROBE,
diff --git a/test/core/end2end/tests/max_connection_age.c b/test/core/end2end/tests/max_connection_age.c
index 59bfdba..04bdb39 100644
--- a/test/core/end2end/tests/max_connection_age.c
+++ b/test/core/end2end/tests/max_connection_age.c
@@ -47,6 +47,7 @@
 #define MAX_CONNECTION_AGE_GRACE_MS 1000
 #define MAX_CONNECTION_IDLE_MS 9999
 
+#define MAX_CONNECTION_AGE_JITTER_MULTIPLIER 1.1
 #define CALL_DEADLINE_S 10
 /* The amount of time we wait for the connection to time out, but after it the
    connection should not use up its grace period. It should be a number between
@@ -169,8 +170,8 @@
   cq_verify(cqv);
 
   gpr_timespec expect_shutdown_time = grpc_timeout_milliseconds_to_deadline(
-      MAX_CONNECTION_AGE_MS + MAX_CONNECTION_AGE_GRACE_MS +
-      IMMEDIATE_SHUTDOWN_GRACE_TIME_MS);
+      (int)(MAX_CONNECTION_AGE_MS * MAX_CONNECTION_AGE_JITTER_MULTIPLIER) +
+      MAX_CONNECTION_AGE_GRACE_MS + IMMEDIATE_SHUTDOWN_GRACE_TIME_MS);
 
   /* Wait for the channel to reach its max age */
   cq_verify_empty_timeout(cqv, CQ_MAX_CONNECTION_AGE_WAIT_TIME_S);
diff --git a/test/core/end2end/tests/ping.c b/test/core/end2end/tests/ping.c
index 082ac64..c51c499 100644
--- a/test/core/end2end/tests/ping.c
+++ b/test/core/end2end/tests/ping.c
@@ -52,16 +52,26 @@
   grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
   int i;
 
-  grpc_arg a[] = {{.type = GRPC_ARG_INTEGER,
-                   .key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS,
-                   .value.integer = min_time_between_pings_ms},
-                  {.type = GRPC_ARG_INTEGER,
-                   .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
-                   .value.integer = 20}};
-  grpc_channel_args client_args = {.num_args = GPR_ARRAY_SIZE(a), .args = a};
+  grpc_arg client_a[] = {{.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS,
+                          .value.integer = 0},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
+                          .value.integer = 20}};
+  grpc_arg server_a[] = {
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS,
+       .value.integer = 0},
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS,
+       .value.integer = 1}};
+  grpc_channel_args client_args = {.num_args = GPR_ARRAY_SIZE(client_a),
+                                   .args = client_a};
+  grpc_channel_args server_args = {.num_args = GPR_ARRAY_SIZE(server_a),
+                                   .args = server_a};
 
   config.init_client(&f, &client_args);
-  config.init_server(&f, NULL);
+  config.init_server(&f, &server_args);
 
   grpc_channel_ping(f.client, f.cq, tag(0), NULL);
   CQ_EXPECT_COMPLETION(cqv, tag(0), 0);
diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 5688ab7..369413e 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -99,6 +99,7 @@
 
 using grpc::testing::CreateChannelForTestCase;
 using grpc::testing::GetServiceAccountJsonKey;
+using grpc::testing::UpdateActions;
 
 int main(int argc, char** argv) {
   grpc::testing::InitTest(&argc, &argv, true);
@@ -165,6 +166,8 @@
   // actions["cacheable_unary"] =
   //    std::bind(&grpc::testing::InteropClient::DoCacheableUnary, &client);
 
+  UpdateActions(&actions);
+
   if (FLAGS_test_case == "all") {
     for (const auto& action : actions) {
       action.second();
diff --git a/test/cpp/interop/client_helper.cc b/test/cpp/interop/client_helper.cc
index d3192ad..784cd28 100644
--- a/test/cpp/interop/client_helper.cc
+++ b/test/cpp/interop/client_helper.cc
@@ -89,6 +89,9 @@
   return access_token;
 }
 
+void UpdateActions(
+    std::unordered_map<grpc::string, std::function<bool()>>* actions) {}
+
 std::shared_ptr<Channel> CreateChannelForTestCase(
     const grpc::string& test_case) {
   GPR_ASSERT(FLAGS_server_port);
diff --git a/test/cpp/interop/client_helper.h b/test/cpp/interop/client_helper.h
index 622b96e..387530a 100644
--- a/test/cpp/interop/client_helper.h
+++ b/test/cpp/interop/client_helper.h
@@ -35,6 +35,7 @@
 #define GRPC_TEST_CPP_INTEROP_CLIENT_HELPER_H
 
 #include <memory>
+#include <unordered_map>
 
 #include <grpc++/channel.h>
 
@@ -47,6 +48,9 @@
 
 grpc::string GetOauth2AccessToken();
 
+void UpdateActions(
+    std::unordered_map<grpc::string, std::function<bool()>>* actions);
+
 std::shared_ptr<Channel> CreateChannelForTestCase(
     const grpc::string& test_case);
 
diff --git a/test/cpp/microbenchmarks/bm_call_create.cc b/test/cpp/microbenchmarks/bm_call_create.cc
index cc37f0c..136b7c0 100644
--- a/test/cpp/microbenchmarks/bm_call_create.cc
+++ b/test/cpp/microbenchmarks/bm_call_create.cc
@@ -54,6 +54,7 @@
 #include "src/core/lib/channel/http_client_filter.h"
 #include "src/core/lib/channel/http_server_filter.h"
 #include "src/core/lib/channel/message_size_filter.h"
+#include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/transport/transport_impl.h"
 }
@@ -152,6 +153,7 @@
   grpc::testing::EchoResponse recv_response;
   grpc::Status recv_status;
   while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
     grpc::ClientContext cli_ctx;
     auto reader = stub->AsyncEcho(&cli_ctx, send_request, &cq);
     reader->Finish(&recv_response, &recv_status, tag(0));
@@ -429,6 +431,7 @@
   const int kArenaSize = 4096;
   call_args.arena = gpr_arena_create(kArenaSize);
   while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
     GRPC_ERROR_UNREF(grpc_call_stack_init(&exec_ctx, channel_stack, 1,
                                           DoNothing, NULL, &call_args));
     typename TestOp::Op op(&exec_ctx, &test_op_data, call_stack);
@@ -596,6 +599,7 @@
   void *method_hdl =
       grpc_channel_register_call(fixture.channel(), "/foo/bar", NULL, NULL);
   while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
     grpc_call_destroy(grpc_channel_create_registered_call(
         fixture.channel(), nullptr, GRPC_PROPAGATE_DEFAULTS, fixture.cq(),
         method_hdl, deadline, NULL));
@@ -634,6 +638,7 @@
   ops[5].data.recv_status_on_client.status_details = &status_details;
   ops[5].data.recv_status_on_client.trailing_metadata = &recv_trailing_metadata;
   while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
     grpc_call *call = grpc_channel_create_registered_call(
         fixture.channel(), nullptr, GRPC_PROPAGATE_DEFAULTS, fixture.cq(),
         method_hdl, deadline, NULL);
@@ -676,6 +681,7 @@
   ops[0].op = GRPC_OP_SEND_MESSAGE;
   ops[0].data.send_message.send_message = send_message;
   while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
     grpc_call_start_batch(call, ops, 1, tag(2), NULL);
     grpc_completion_queue_next(fixture.cq(),
                                gpr_inf_future(GPR_CLOCK_MONOTONIC), NULL);
diff --git a/tools/dockerfile/interoptest/grpc_interop_csharpcoreclr/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_csharpcoreclr/Dockerfile
index c26c9a2..2a59628 100644
--- a/tools/dockerfile/interoptest/grpc_interop_csharpcoreclr/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_csharpcoreclr/Dockerfile
@@ -99,8 +99,8 @@
 
 # Install dotnet SDK based on https://www.microsoft.com/net/core#debian
 RUN apt-get update && apt-get install -y curl libunwind8 gettext
-# dotnet-dev-1.0.0-preview2-003121
-RUN curl -sSL -o dotnet100.tar.gz https://go.microsoft.com/fwlink/?LinkID=809130
+# dotnet-dev-1.0.0-preview2-003131
+RUN curl -sSL -o dotnet100.tar.gz https://go.microsoft.com/fwlink/?LinkID=827530
 RUN mkdir -p /opt/dotnet && tar zxf dotnet100.tar.gz -C /opt/dotnet
 # dotnet-dev-1.0.1
 RUN curl -sSL -o dotnet101.tar.gz https://go.microsoft.com/fwlink/?LinkID=843453
diff --git a/tools/dockerfile/test/csharp_coreclr_x64/Dockerfile b/tools/dockerfile/test/csharp_coreclr_x64/Dockerfile
index c26c9a2..2a59628 100644
--- a/tools/dockerfile/test/csharp_coreclr_x64/Dockerfile
+++ b/tools/dockerfile/test/csharp_coreclr_x64/Dockerfile
@@ -99,8 +99,8 @@
 
 # Install dotnet SDK based on https://www.microsoft.com/net/core#debian
 RUN apt-get update && apt-get install -y curl libunwind8 gettext
-# dotnet-dev-1.0.0-preview2-003121
-RUN curl -sSL -o dotnet100.tar.gz https://go.microsoft.com/fwlink/?LinkID=809130
+# dotnet-dev-1.0.0-preview2-003131
+RUN curl -sSL -o dotnet100.tar.gz https://go.microsoft.com/fwlink/?LinkID=827530
 RUN mkdir -p /opt/dotnet && tar zxf dotnet100.tar.gz -C /opt/dotnet
 # dotnet-dev-1.0.1
 RUN curl -sSL -o dotnet101.tar.gz https://go.microsoft.com/fwlink/?LinkID=843453
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index fa19aa5..ae5120d 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -7129,6 +7129,7 @@
       "test/core/end2end/end2end_tests.h", 
       "test/core/end2end/tests/authority_not_supported.c", 
       "test/core/end2end/tests/bad_hostname.c", 
+      "test/core/end2end/tests/bad_ping.c", 
       "test/core/end2end/tests/binary_metadata.c", 
       "test/core/end2end/tests/call_creds.c", 
       "test/core/end2end/tests/cancel_after_accept.c", 
@@ -7204,6 +7205,7 @@
       "test/core/end2end/end2end_tests.h", 
       "test/core/end2end/tests/authority_not_supported.c", 
       "test/core/end2end/tests/bad_hostname.c", 
+      "test/core/end2end/tests/bad_ping.c", 
       "test/core/end2end/tests/binary_metadata.c", 
       "test/core/end2end/tests/cancel_after_accept.c", 
       "test/core/end2end/tests/cancel_after_client_done.c", 
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index b878bc1..88bac79 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -5727,6 +5727,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -6927,6 +6950,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -8125,6 +8171,28 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -10333,6 +10401,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -11525,6 +11616,25 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -12521,6 +12631,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -13677,6 +13810,30 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -14923,6 +15080,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -16125,6 +16305,30 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -21709,6 +21913,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -22909,6 +23136,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -25141,6 +25391,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -26314,6 +26587,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -27491,6 +27787,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -29703,6 +30022,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -30872,6 +31214,25 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -31849,6 +32210,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -32982,6 +33366,30 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -34204,6 +34612,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
@@ -39621,6 +40052,29 @@
   }, 
   {
     "args": [
+      "bad_ping"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "binary_metadata"
     ], 
     "ci_platforms": [
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
index 5a2d6ac..e3adf79 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
@@ -159,6 +159,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_ping.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\binary_metadata.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\cancel_after_accept.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
index 3a870b9..cfb8d04 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
@@ -13,6 +13,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_ping.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\binary_metadata.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
index 4b001a7..a67f509 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
@@ -159,6 +159,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_ping.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\binary_metadata.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\call_creds.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
index 2eace64..97ba77a 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
@@ -13,6 +13,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_ping.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\binary_metadata.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>