Add a place for tests
diff --git a/Makefile b/Makefile
index 5be0d14..d2ec1d8 100644
--- a/Makefile
+++ b/Makefile
@@ -5533,6 +5533,7 @@
     test/core/end2end/tests/graceful_server_shutdown.c \
     test/core/end2end/tests/high_initial_seqno.c \
     test/core/end2end/tests/hpack_size.c \
+    test/core/end2end/tests/idempotent_request.c \
     test/core/end2end/tests/invoke_large_request.c \
     test/core/end2end/tests/large_metadata.c \
     test/core/end2end/tests/max_concurrent_streams.c \
@@ -5543,6 +5544,7 @@
     test/core/end2end/tests/ping.c \
     test/core/end2end/tests/ping_pong_streaming.c \
     test/core/end2end/tests/registered_call.c \
+    test/core/end2end/tests/registered_idempotent.c \
     test/core/end2end/tests/request_with_flags.c \
     test/core/end2end/tests/request_with_payload.c \
     test/core/end2end/tests/server_finishes_request.c \
@@ -5606,6 +5608,7 @@
     test/core/end2end/tests/graceful_server_shutdown.c \
     test/core/end2end/tests/high_initial_seqno.c \
     test/core/end2end/tests/hpack_size.c \
+    test/core/end2end/tests/idempotent_request.c \
     test/core/end2end/tests/invoke_large_request.c \
     test/core/end2end/tests/large_metadata.c \
     test/core/end2end/tests/max_concurrent_streams.c \
@@ -5616,6 +5619,7 @@
     test/core/end2end/tests/ping.c \
     test/core/end2end/tests/ping_pong_streaming.c \
     test/core/end2end/tests/registered_call.c \
+    test/core/end2end/tests/registered_idempotent.c \
     test/core/end2end/tests/request_with_flags.c \
     test/core/end2end/tests/request_with_payload.c \
     test/core/end2end/tests/server_finishes_request.c \
diff --git a/src/python/grpcio/grpc/_cython/imports.generated.h b/src/python/grpcio/grpc/_cython/imports.generated.h
index b70dccc..9565933 100644
--- a/src/python/grpcio/grpc/_cython/imports.generated.h
+++ b/src/python/grpcio/grpc/_cython/imports.generated.h
@@ -283,7 +283,7 @@
 typedef grpc_call_error(*grpc_server_request_call_type)(grpc_server *server, grpc_call **call, grpc_call_details *details, grpc_metadata_array *request_metadata, grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void *tag_new);
 extern grpc_server_request_call_type grpc_server_request_call_import;
 #define grpc_server_request_call grpc_server_request_call_import
-typedef void *(*grpc_server_register_method_type)(grpc_server *server, const char *method, const char *host);
+typedef void *(*grpc_server_register_method_type)(grpc_server *server, const char *method, const char *host, uint32_t flags);
 extern grpc_server_register_method_type grpc_server_register_method_import;
 #define grpc_server_register_method grpc_server_register_method_import
 typedef grpc_call_error(*grpc_server_request_registered_call_type)(grpc_server *server, void *registered_method, grpc_call **call, gpr_timespec *deadline, grpc_metadata_array *request_metadata, grpc_byte_buffer **optional_payload, grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void *tag_new);
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index b972f60..6cfa599 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -283,7 +283,7 @@
 typedef grpc_call_error(*grpc_server_request_call_type)(grpc_server *server, grpc_call **call, grpc_call_details *details, grpc_metadata_array *request_metadata, grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void *tag_new);
 extern grpc_server_request_call_type grpc_server_request_call_import;
 #define grpc_server_request_call grpc_server_request_call_import
-typedef void *(*grpc_server_register_method_type)(grpc_server *server, const char *method, const char *host);
+typedef void *(*grpc_server_register_method_type)(grpc_server *server, const char *method, const char *host, uint32_t flags);
 extern grpc_server_register_method_type grpc_server_register_method_import;
 #define grpc_server_register_method grpc_server_register_method_import
 typedef grpc_call_error(*grpc_server_request_registered_call_type)(grpc_server *server, void *registered_method, grpc_call **call, gpr_timespec *deadline, grpc_metadata_array *request_metadata, grpc_byte_buffer **optional_payload, grpc_completion_queue *cq_bound_to_call, grpc_completion_queue *cq_for_notification, void *tag_new);
diff --git a/test/core/end2end/end2end_nosec_tests.c b/test/core/end2end/end2end_nosec_tests.c
index 17dc190..7b6d0d3 100644
--- a/test/core/end2end/end2end_nosec_tests.c
+++ b/test/core/end2end/end2end_nosec_tests.c
@@ -54,6 +54,7 @@
 extern void graceful_server_shutdown(grpc_end2end_test_config config);
 extern void high_initial_seqno(grpc_end2end_test_config config);
 extern void hpack_size(grpc_end2end_test_config config);
+extern void idempotent_request(grpc_end2end_test_config config);
 extern void invoke_large_request(grpc_end2end_test_config config);
 extern void large_metadata(grpc_end2end_test_config config);
 extern void max_concurrent_streams(grpc_end2end_test_config config);
@@ -64,6 +65,7 @@
 extern void ping(grpc_end2end_test_config config);
 extern void ping_pong_streaming(grpc_end2end_test_config config);
 extern void registered_call(grpc_end2end_test_config config);
+extern void registered_idempotent(grpc_end2end_test_config config);
 extern void request_with_flags(grpc_end2end_test_config config);
 extern void request_with_payload(grpc_end2end_test_config config);
 extern void server_finishes_request(grpc_end2end_test_config config);
@@ -95,6 +97,7 @@
     graceful_server_shutdown(config);
     high_initial_seqno(config);
     hpack_size(config);
+    idempotent_request(config);
     invoke_large_request(config);
     large_metadata(config);
     max_concurrent_streams(config);
@@ -105,6 +108,7 @@
     ping(config);
     ping_pong_streaming(config);
     registered_call(config);
+    registered_idempotent(config);
     request_with_flags(config);
     request_with_payload(config);
     server_finishes_request(config);
@@ -182,6 +186,10 @@
       hpack_size(config);
       continue;
     }
+    if (0 == strcmp("idempotent_request", argv[i])) {
+      idempotent_request(config);
+      continue;
+    }
     if (0 == strcmp("invoke_large_request", argv[i])) {
       invoke_large_request(config);
       continue;
@@ -222,6 +230,10 @@
       registered_call(config);
       continue;
     }
+    if (0 == strcmp("registered_idempotent", argv[i])) {
+      registered_idempotent(config);
+      continue;
+    }
     if (0 == strcmp("request_with_flags", argv[i])) {
       request_with_flags(config);
       continue;
diff --git a/test/core/end2end/end2end_tests.c b/test/core/end2end/end2end_tests.c
index 6f2f5af..2d139c7 100644
--- a/test/core/end2end/end2end_tests.c
+++ b/test/core/end2end/end2end_tests.c
@@ -55,6 +55,7 @@
 extern void graceful_server_shutdown(grpc_end2end_test_config config);
 extern void high_initial_seqno(grpc_end2end_test_config config);
 extern void hpack_size(grpc_end2end_test_config config);
+extern void idempotent_request(grpc_end2end_test_config config);
 extern void invoke_large_request(grpc_end2end_test_config config);
 extern void large_metadata(grpc_end2end_test_config config);
 extern void max_concurrent_streams(grpc_end2end_test_config config);
@@ -65,6 +66,7 @@
 extern void ping(grpc_end2end_test_config config);
 extern void ping_pong_streaming(grpc_end2end_test_config config);
 extern void registered_call(grpc_end2end_test_config config);
+extern void registered_idempotent(grpc_end2end_test_config config);
 extern void request_with_flags(grpc_end2end_test_config config);
 extern void request_with_payload(grpc_end2end_test_config config);
 extern void server_finishes_request(grpc_end2end_test_config config);
@@ -97,6 +99,7 @@
     graceful_server_shutdown(config);
     high_initial_seqno(config);
     hpack_size(config);
+    idempotent_request(config);
     invoke_large_request(config);
     large_metadata(config);
     max_concurrent_streams(config);
@@ -107,6 +110,7 @@
     ping(config);
     ping_pong_streaming(config);
     registered_call(config);
+    registered_idempotent(config);
     request_with_flags(config);
     request_with_payload(config);
     server_finishes_request(config);
@@ -188,6 +192,10 @@
       hpack_size(config);
       continue;
     }
+    if (0 == strcmp("idempotent_request", argv[i])) {
+      idempotent_request(config);
+      continue;
+    }
     if (0 == strcmp("invoke_large_request", argv[i])) {
       invoke_large_request(config);
       continue;
@@ -228,6 +236,10 @@
       registered_call(config);
       continue;
     }
+    if (0 == strcmp("registered_idempotent", argv[i])) {
+      registered_idempotent(config);
+      continue;
+    }
     if (0 == strcmp("request_with_flags", argv[i])) {
       request_with_flags(config);
       continue;
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 4dfafce..d185a18 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -104,6 +104,7 @@
     'hpack_size': default_test_options._replace(proxyable=False,
                                                 traceable=False),
     'high_initial_seqno': default_test_options,
+    'idempotent_request': default_test_options,
     'invoke_large_request': default_test_options,
     'large_metadata': default_test_options,
     'max_concurrent_streams': default_test_options._replace(proxyable=False),
@@ -114,6 +115,7 @@
     'ping_pong_streaming': default_test_options,
     'ping': connectivity_test_options._replace(proxyable=False),
     'registered_call': default_test_options,
+    'registered_idempotent': default_test_options,
     'request_with_flags': default_test_options._replace(proxyable=False),
     'request_with_payload': default_test_options,
     'server_finishes_request': default_test_options,
diff --git a/test/core/end2end/tests/idempotent_request.c b/test/core/end2end/tests/idempotent_request.c
new file mode 100644
index 0000000..fd9788d
--- /dev/null
+++ b/test/core/end2end/tests/idempotent_request.c
@@ -0,0 +1,247 @@
+/*
+ *
+ * Copyright 2015, 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 <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "src/core/support/string.h"
+#include "test/core/end2end/cq_verifier.h"
+
+enum { TIMEOUT = 200000 };
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(
+                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 .type == GRPC_OP_COMPLETE);
+  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 simple_request_body(grpc_end2end_test_fixture f) {
+  grpc_call *c;
+  grpc_call *s;
+  gpr_timespec deadline = five_seconds_time();
+  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_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  char *details = NULL;
+  size_t details_capacity = 0;
+  int was_cancelled = 2;
+  char *peer;
+
+  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+                               "/foo", "foo.test.google.fr:1234", deadline,
+                               NULL);
+  GPR_ASSERT(c);
+
+  peer = grpc_call_get_peer(c);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "client_peer_before_call=%s", peer);
+  gpr_free(peer);
+
+  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);
+
+  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_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.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->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  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);
+
+  peer = grpc_call_get_peer(s);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "server_peer=%s", peer);
+  gpr_free(peer);
+  peer = grpc_call_get_peer(c);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "client_peer=%s", peer);
+  gpr_free(peer);
+
+  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;
+  op->data.send_status_from_server.status_details = "xyz";
+  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);
+
+  GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
+  GPR_ASSERT(0 == strcmp(details, "xyz"));
+  GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
+  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  GPR_ASSERT(was_cancelled == 1);
+
+  gpr_free(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);
+  grpc_call_destroy(s);
+
+  cq_verifier_destroy(cqv);
+}
+
+static void test_invoke_simple_request(grpc_end2end_test_config config) {
+  grpc_end2end_test_fixture f;
+
+  f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
+  simple_request_body(f);
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
+  int i;
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
+  for (i = 0; i < 10; i++) {
+    simple_request_body(f);
+    gpr_log(GPR_INFO, "Passed simple request %d", i);
+  }
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void simple_request(grpc_end2end_test_config config) {
+  int i;
+  for (i = 0; i < 10; i++) {
+    test_invoke_simple_request(config);
+  }
+  test_invoke_10_simple_requests(config);
+}
diff --git a/test/core/end2end/tests/registered_idempotent.c b/test/core/end2end/tests/registered_idempotent.c
new file mode 100644
index 0000000..d9d2b19
--- /dev/null
+++ b/test/core/end2end/tests/registered_idempotent.c
@@ -0,0 +1,233 @@
+/*
+ *
+ * Copyright 2015, 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 <stdio.h>
+#include <string.h>
+
+#include "src/core/support/string.h"
+#include <grpc/byte_buffer.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "test/core/end2end/cq_verifier.h"
+
+enum { TIMEOUT = 200000 };
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                         NULL).type == GRPC_OP_COMPLETE);
+  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 simple_request_body(grpc_end2end_test_fixture f, void *rc) {
+  grpc_call *c;
+  grpc_call *s;
+  gpr_timespec deadline = five_seconds_time();
+  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_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  char *details = NULL;
+  size_t details_capacity = 0;
+  int was_cancelled = 2;
+
+  c = grpc_channel_create_registered_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq, rc, 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);
+
+  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_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.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->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  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);
+
+  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;
+  op->data.send_status_from_server.status_details = "xyz";
+  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);
+
+  GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
+  GPR_ASSERT(0 == strcmp(details, "xyz"));
+  GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
+  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
+  GPR_ASSERT(was_cancelled == 1);
+
+  gpr_free(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);
+  grpc_call_destroy(s);
+
+  cq_verifier_destroy(cqv);
+}
+
+static void test_invoke_simple_request(grpc_end2end_test_config config) {
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_simple_request", NULL, NULL);
+  void *rc = grpc_channel_register_call(f.client, "/foo",
+                                        "foo.test.google.fr:1234", NULL);
+
+  simple_request_body(f, rc);
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
+  int i;
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
+  void *rc = grpc_channel_register_call(f.client, "/foo",
+                                        "foo.test.google.fr:1234", NULL);
+
+  for (i = 0; i < 10; i++) {
+    simple_request_body(f, rc);
+    gpr_log(GPR_INFO, "Passed simple request %d", i);
+  }
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void registered_call(grpc_end2end_test_config config) {
+  test_invoke_simple_request(config);
+  test_invoke_10_simple_requests(config);
+}
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 0c7a6c7..a42fdc6 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -6300,6 +6300,7 @@
       "test/core/end2end/tests/graceful_server_shutdown.c", 
       "test/core/end2end/tests/high_initial_seqno.c", 
       "test/core/end2end/tests/hpack_size.c", 
+      "test/core/end2end/tests/idempotent_request.c", 
       "test/core/end2end/tests/invoke_large_request.c", 
       "test/core/end2end/tests/large_metadata.c", 
       "test/core/end2end/tests/max_concurrent_streams.c", 
@@ -6310,6 +6311,7 @@
       "test/core/end2end/tests/ping.c", 
       "test/core/end2end/tests/ping_pong_streaming.c", 
       "test/core/end2end/tests/registered_call.c", 
+      "test/core/end2end/tests/registered_idempotent.c", 
       "test/core/end2end/tests/request_with_flags.c", 
       "test/core/end2end/tests/request_with_payload.c", 
       "test/core/end2end/tests/server_finishes_request.c", 
@@ -6356,6 +6358,7 @@
       "test/core/end2end/tests/graceful_server_shutdown.c", 
       "test/core/end2end/tests/high_initial_seqno.c", 
       "test/core/end2end/tests/hpack_size.c", 
+      "test/core/end2end/tests/idempotent_request.c", 
       "test/core/end2end/tests/invoke_large_request.c", 
       "test/core/end2end/tests/large_metadata.c", 
       "test/core/end2end/tests/max_concurrent_streams.c", 
@@ -6366,6 +6369,7 @@
       "test/core/end2end/tests/ping.c", 
       "test/core/end2end/tests/ping_pong_streaming.c", 
       "test/core/end2end/tests/registered_call.c", 
+      "test/core/end2end/tests/registered_idempotent.c", 
       "test/core/end2end/tests/request_with_flags.c", 
       "test/core/end2end/tests/request_with_payload.c", 
       "test/core/end2end/tests/server_finishes_request.c", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index d91245c..6bbb322 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -4543,6 +4543,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -4763,6 +4785,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -5335,6 +5379,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -5555,6 +5621,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -6110,6 +6198,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -6320,6 +6429,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -6883,6 +7013,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -7103,6 +7255,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -7573,6 +7747,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -7733,6 +7923,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -8149,6 +8355,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -8309,6 +8531,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -8725,6 +8963,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -8885,6 +9139,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -9386,6 +9656,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -9596,6 +9887,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -10079,6 +10391,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -10247,6 +10580,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_payload"
     ], 
     "ci_platforms": [
@@ -10709,6 +11063,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -10898,6 +11273,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -11352,6 +11748,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -11550,6 +11968,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -12020,6 +12460,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -12209,6 +12670,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -12751,6 +13233,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -12971,6 +13475,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -13441,6 +13967,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl+poll_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -13601,6 +14143,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl+poll_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -14039,6 +14597,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -14207,6 +14786,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_payload"
     ], 
     "ci_platforms": [
@@ -14683,6 +15283,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uchannel_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -14881,6 +15503,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uchannel_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -15377,6 +16021,26 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -15577,6 +16241,26 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -16013,6 +16697,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds+poll_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -16173,6 +16873,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds+poll_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -16669,6 +17385,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -16889,6 +17627,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -17439,6 +18199,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -17659,6 +18441,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -18209,6 +19013,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -18429,6 +19255,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -18883,6 +19731,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -19043,6 +19907,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -19443,6 +20323,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -19603,6 +20499,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -20003,6 +20915,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -20163,6 +21091,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+poll+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -20580,6 +21524,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -20748,6 +21713,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_payload"
     ], 
     "ci_platforms": [
@@ -21189,6 +22175,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -21378,6 +22385,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -21810,6 +22838,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -22008,6 +23058,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -22457,6 +23529,27 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -22646,6 +23739,27 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -23100,6 +24214,28 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uchannel_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -23298,6 +24434,28 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uchannel_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -23774,6 +24932,26 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -23974,6 +25152,26 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "ci_platforms": [
@@ -24394,6 +25592,22 @@
   }, 
   {
     "args": [
+      "idempotent_request"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds+poll_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "invoke_large_request"
     ], 
     "ci_platforms": [
@@ -24554,6 +25768,22 @@
   }, 
   {
     "args": [
+      "registered_idempotent"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds+poll_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "request_with_flags"
     ], 
     "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 2f3b591..e87abfa 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
@@ -185,6 +185,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\hpack_size.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\idempotent_request.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\invoke_large_request.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\large_metadata.c">
@@ -205,6 +207,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_call.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_idempotent.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\request_with_flags.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\request_with_payload.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 c63ebe7..f373c48 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
@@ -52,6 +52,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\hpack_size.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\idempotent_request.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\invoke_large_request.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
@@ -82,6 +85,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_call.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_idempotent.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\request_with_flags.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 9d7bdc5..989da88 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
@@ -187,6 +187,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\hpack_size.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\idempotent_request.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\invoke_large_request.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\large_metadata.c">
@@ -207,6 +209,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_call.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_idempotent.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\request_with_flags.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\request_with_payload.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 c30054a..a7d1889 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
@@ -55,6 +55,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\hpack_size.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\idempotent_request.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\invoke_large_request.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
@@ -85,6 +88,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_call.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\registered_idempotent.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\request_with_flags.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>