| /* |
| * |
| * Copyright 2016, 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 "src/core/lib/iomgr/port.h" |
| |
| #ifdef GRPC_UV |
| |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| |
| #include "src/core/lib/iomgr/error.h" |
| #include "src/core/lib/iomgr/sockaddr_utils.h" |
| #include "src/core/lib/iomgr/tcp_client.h" |
| #include "src/core/lib/iomgr/tcp_uv.h" |
| #include "src/core/lib/iomgr/timer.h" |
| |
| typedef struct grpc_uv_tcp_connect { |
| uv_connect_t connect_req; |
| grpc_timer alarm; |
| grpc_closure on_alarm; |
| uv_tcp_t *tcp_handle; |
| grpc_closure *closure; |
| grpc_endpoint **endpoint; |
| int refs; |
| char *addr_name; |
| grpc_resource_quota *resource_quota; |
| } grpc_uv_tcp_connect; |
| |
| static void uv_tcp_connect_cleanup(grpc_exec_ctx *exec_ctx, |
| grpc_uv_tcp_connect *connect) { |
| grpc_resource_quota_unref_internal(exec_ctx, connect->resource_quota); |
| gpr_free(connect); |
| } |
| |
| static void tcp_close_callback(uv_handle_t *handle) { gpr_free(handle); } |
| |
| static void uv_tc_on_alarm(grpc_exec_ctx *exec_ctx, void *acp, |
| grpc_error *error) { |
| int done; |
| grpc_uv_tcp_connect *connect = acp; |
| if (error == GRPC_ERROR_NONE) { |
| /* error == NONE implies that the timer ran out, and wasn't cancelled. If |
| it was cancelled, then the handler that cancelled it also should close |
| the handle, if applicable */ |
| uv_close((uv_handle_t *)connect->tcp_handle, tcp_close_callback); |
| } |
| done = (--connect->refs == 0); |
| if (done) { |
| uv_tcp_connect_cleanup(exec_ctx, connect); |
| } |
| } |
| |
| static void uv_tc_on_connect(uv_connect_t *req, int status) { |
| grpc_uv_tcp_connect *connect = req->data; |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_error *error = GRPC_ERROR_NONE; |
| int done; |
| grpc_closure *closure = connect->closure; |
| grpc_timer_cancel(&exec_ctx, &connect->alarm); |
| if (status == 0) { |
| *connect->endpoint = grpc_tcp_create( |
| connect->tcp_handle, connect->resource_quota, connect->addr_name); |
| } else { |
| error = GRPC_ERROR_CREATE("Failed to connect to remote host"); |
| error = grpc_error_set_int(error, GRPC_ERROR_INT_ERRNO, -status); |
| error = |
| grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status)); |
| if (status == UV_ECANCELED) { |
| error = grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, |
| "Timeout occurred"); |
| // This should only happen if the handle is already closed |
| } else { |
| error = grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, |
| uv_strerror(status)); |
| uv_close((uv_handle_t *)connect->tcp_handle, tcp_close_callback); |
| } |
| } |
| done = (--connect->refs == 0); |
| if (done) { |
| uv_tcp_connect_cleanup(&exec_ctx, connect); |
| } |
| grpc_closure_sched(&exec_ctx, closure, error); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx, |
| grpc_closure *closure, grpc_endpoint **ep, |
| grpc_pollset_set *interested_parties, |
| const grpc_channel_args *channel_args, |
| const grpc_resolved_address *resolved_addr, |
| gpr_timespec deadline) { |
| grpc_uv_tcp_connect *connect; |
| grpc_resource_quota *resource_quota = grpc_resource_quota_create(NULL); |
| (void)channel_args; |
| (void)interested_parties; |
| |
| if (channel_args != NULL) { |
| for (size_t i = 0; i < channel_args->num_args; i++) { |
| if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) { |
| grpc_resource_quota_unref_internal(exec_ctx, resource_quota); |
| resource_quota = grpc_resource_quota_ref_internal( |
| channel_args->args[i].value.pointer.p); |
| } |
| } |
| } |
| |
| connect = gpr_malloc(sizeof(grpc_uv_tcp_connect)); |
| memset(connect, 0, sizeof(grpc_uv_tcp_connect)); |
| connect->closure = closure; |
| connect->endpoint = ep; |
| connect->tcp_handle = gpr_malloc(sizeof(uv_tcp_t)); |
| connect->addr_name = grpc_sockaddr_to_uri(resolved_addr); |
| connect->resource_quota = resource_quota; |
| uv_tcp_init(uv_default_loop(), connect->tcp_handle); |
| connect->connect_req.data = connect; |
| // TODO(murgatroid99): figure out what the return value here means |
| uv_tcp_connect(&connect->connect_req, connect->tcp_handle, |
| (const struct sockaddr *)resolved_addr->addr, |
| uv_tc_on_connect); |
| grpc_closure_init(&connect->on_alarm, uv_tc_on_alarm, connect, |
| grpc_schedule_on_exec_ctx); |
| grpc_timer_init(exec_ctx, &connect->alarm, |
| gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC), |
| &connect->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC)); |
| } |
| |
| // overridden by api_fuzzer.c |
| void (*grpc_tcp_client_connect_impl)( |
| grpc_exec_ctx *exec_ctx, grpc_closure *closure, grpc_endpoint **ep, |
| grpc_pollset_set *interested_parties, const grpc_channel_args *channel_args, |
| const grpc_resolved_address *addr, |
| gpr_timespec deadline) = tcp_client_connect_impl; |
| |
| void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure, |
| grpc_endpoint **ep, |
| grpc_pollset_set *interested_parties, |
| const grpc_channel_args *channel_args, |
| const grpc_resolved_address *addr, |
| gpr_timespec deadline) { |
| grpc_tcp_client_connect_impl(exec_ctx, closure, ep, interested_parties, |
| channel_args, addr, deadline); |
| } |
| |
| #endif /* GRPC_UV */ |