| /* |
| * |
| * 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 "src/core/lib/iomgr/tcp_server.h" |
| |
| #include <errno.h> |
| #include <netinet/in.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <unistd.h> |
| |
| #include <grpc/grpc.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/time.h> |
| |
| #include "src/core/lib/iomgr/iomgr.h" |
| #include "src/core/lib/iomgr/sockaddr_utils.h" |
| #include "test/core/util/port.h" |
| #include "test/core/util/test_config.h" |
| |
| #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", #x) |
| |
| static gpr_mu *g_mu; |
| static grpc_pollset *g_pollset; |
| static int g_nconnects = 0; |
| |
| typedef struct on_connect_result { |
| /* Owns a ref to server. */ |
| grpc_tcp_server *server; |
| unsigned port_index; |
| unsigned fd_index; |
| int server_fd; |
| } on_connect_result; |
| |
| typedef struct server_weak_ref { |
| grpc_tcp_server *server; |
| |
| /* arg is this server_weak_ref. */ |
| grpc_closure server_shutdown; |
| } server_weak_ref; |
| |
| static on_connect_result g_result = {NULL, 0, 0, -1}; |
| |
| static void on_connect_result_init(on_connect_result *result) { |
| result->server = NULL; |
| result->port_index = 0; |
| result->fd_index = 0; |
| result->server_fd = -1; |
| } |
| |
| static void on_connect_result_set(on_connect_result *result, |
| const grpc_tcp_server_acceptor *acceptor) { |
| result->server = grpc_tcp_server_ref(acceptor->from_server); |
| result->port_index = acceptor->port_index; |
| result->fd_index = acceptor->fd_index; |
| result->server_fd = grpc_tcp_server_port_fd( |
| result->server, acceptor->port_index, acceptor->fd_index); |
| } |
| |
| static void server_weak_ref_shutdown(grpc_exec_ctx *exec_ctx, void *arg, |
| bool success) { |
| server_weak_ref *weak_ref = arg; |
| weak_ref->server = NULL; |
| } |
| |
| static void server_weak_ref_init(server_weak_ref *weak_ref) { |
| weak_ref->server = NULL; |
| grpc_closure_init(&weak_ref->server_shutdown, server_weak_ref_shutdown, |
| weak_ref); |
| } |
| |
| /* Make weak_ref->server_shutdown a shutdown_starting cb on server. |
| grpc_tcp_server promises that the server object will live until |
| weak_ref->server_shutdown has returned. A strong ref on grpc_tcp_server |
| should be held until server_weak_ref_set() returns to avoid a race where the |
| server is deleted before the shutdown_starting cb is added. */ |
| static void server_weak_ref_set(server_weak_ref *weak_ref, |
| grpc_tcp_server *server) { |
| grpc_tcp_server_shutdown_starting_add(server, &weak_ref->server_shutdown); |
| weak_ref->server = server; |
| } |
| |
| static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp, |
| grpc_pollset *pollset, |
| grpc_tcp_server_acceptor *acceptor) { |
| grpc_endpoint_shutdown(exec_ctx, tcp); |
| grpc_endpoint_destroy(exec_ctx, tcp); |
| |
| gpr_mu_lock(g_mu); |
| on_connect_result_set(&g_result, acceptor); |
| g_nconnects++; |
| grpc_pollset_kick(g_pollset, NULL); |
| gpr_mu_unlock(g_mu); |
| } |
| |
| static void test_no_op(void) { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_tcp_server *s = grpc_tcp_server_create(NULL); |
| grpc_tcp_server_unref(&exec_ctx, s); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| static void test_no_op_with_start(void) { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_tcp_server *s = grpc_tcp_server_create(NULL); |
| LOG_TEST("test_no_op_with_start"); |
| grpc_tcp_server_start(&exec_ctx, s, NULL, 0, on_connect, NULL); |
| grpc_tcp_server_unref(&exec_ctx, s); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| static void test_no_op_with_port(void) { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| struct sockaddr_in addr; |
| grpc_tcp_server *s = grpc_tcp_server_create(NULL); |
| LOG_TEST("test_no_op_with_port"); |
| |
| memset(&addr, 0, sizeof(addr)); |
| addr.sin_family = AF_INET; |
| GPR_ASSERT( |
| grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, sizeof(addr)) > 0); |
| |
| grpc_tcp_server_unref(&exec_ctx, s); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| static void test_no_op_with_port_and_start(void) { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| struct sockaddr_in addr; |
| grpc_tcp_server *s = grpc_tcp_server_create(NULL); |
| LOG_TEST("test_no_op_with_port_and_start"); |
| |
| memset(&addr, 0, sizeof(addr)); |
| addr.sin_family = AF_INET; |
| GPR_ASSERT( |
| grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, sizeof(addr)) > 0); |
| |
| grpc_tcp_server_start(&exec_ctx, s, NULL, 0, on_connect, NULL); |
| |
| grpc_tcp_server_unref(&exec_ctx, s); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| static void tcp_connect(grpc_exec_ctx *exec_ctx, const struct sockaddr *remote, |
| socklen_t remote_len, on_connect_result *result) { |
| gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10); |
| int clifd = socket(remote->sa_family, SOCK_STREAM, 0); |
| int nconnects_before; |
| |
| gpr_mu_lock(g_mu); |
| nconnects_before = g_nconnects; |
| on_connect_result_init(&g_result); |
| GPR_ASSERT(clifd >= 0); |
| gpr_log(GPR_DEBUG, "start connect"); |
| GPR_ASSERT(connect(clifd, remote, remote_len) == 0); |
| gpr_log(GPR_DEBUG, "wait"); |
| while (g_nconnects == nconnects_before && |
| gpr_time_cmp(deadline, gpr_now(deadline.clock_type)) > 0) { |
| grpc_pollset_worker *worker = NULL; |
| grpc_pollset_work(exec_ctx, g_pollset, &worker, |
| gpr_now(GPR_CLOCK_MONOTONIC), deadline); |
| gpr_mu_unlock(g_mu); |
| grpc_exec_ctx_finish(exec_ctx); |
| gpr_mu_lock(g_mu); |
| } |
| gpr_log(GPR_DEBUG, "wait done"); |
| GPR_ASSERT(g_nconnects == nconnects_before + 1); |
| close(clifd); |
| *result = g_result; |
| |
| gpr_mu_unlock(g_mu); |
| } |
| |
| /* Tests a tcp server with multiple ports. TODO(daniel-j-born): Multiple fds for |
| the same port should be tested. */ |
| static void test_connect(unsigned n) { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| struct sockaddr_storage addr; |
| struct sockaddr_storage addr1; |
| socklen_t addr_len = sizeof(addr); |
| unsigned svr_fd_count; |
| int svr_port; |
| unsigned svr1_fd_count; |
| int svr1_port; |
| grpc_tcp_server *s = grpc_tcp_server_create(NULL); |
| unsigned i; |
| server_weak_ref weak_ref; |
| server_weak_ref_init(&weak_ref); |
| LOG_TEST("test_connect"); |
| gpr_log(GPR_INFO, "clients=%d", n); |
| memset(&addr, 0, sizeof(addr)); |
| memset(&addr1, 0, sizeof(addr1)); |
| addr.ss_family = addr1.ss_family = AF_INET; |
| svr_port = grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, addr_len); |
| GPR_ASSERT(svr_port > 0); |
| /* Cannot use wildcard (port==0), because add_port() will try to reuse the |
| same port as a previous add_port(). */ |
| svr1_port = grpc_pick_unused_port_or_die(); |
| grpc_sockaddr_set_port((struct sockaddr *)&addr1, svr1_port); |
| GPR_ASSERT(grpc_tcp_server_add_port(s, (struct sockaddr *)&addr1, addr_len) == |
| svr1_port); |
| |
| /* Bad port_index. */ |
| GPR_ASSERT(grpc_tcp_server_port_fd_count(s, 2) == 0); |
| GPR_ASSERT(grpc_tcp_server_port_fd(s, 2, 0) < 0); |
| |
| /* Bad fd_index. */ |
| GPR_ASSERT(grpc_tcp_server_port_fd(s, 0, 100) < 0); |
| GPR_ASSERT(grpc_tcp_server_port_fd(s, 1, 100) < 0); |
| |
| /* Got at least one fd per port. */ |
| svr_fd_count = grpc_tcp_server_port_fd_count(s, 0); |
| GPR_ASSERT(svr_fd_count >= 1); |
| svr1_fd_count = grpc_tcp_server_port_fd_count(s, 1); |
| GPR_ASSERT(svr1_fd_count >= 1); |
| |
| for (i = 0; i < svr_fd_count; ++i) { |
| int fd = grpc_tcp_server_port_fd(s, 0, i); |
| GPR_ASSERT(fd >= 0); |
| if (i == 0) { |
| GPR_ASSERT(getsockname(fd, (struct sockaddr *)&addr, &addr_len) == 0); |
| GPR_ASSERT(addr_len <= sizeof(addr)); |
| } |
| } |
| for (i = 0; i < svr1_fd_count; ++i) { |
| int fd = grpc_tcp_server_port_fd(s, 1, i); |
| GPR_ASSERT(fd >= 0); |
| if (i == 0) { |
| GPR_ASSERT(getsockname(fd, (struct sockaddr *)&addr1, &addr_len) == 0); |
| GPR_ASSERT(addr_len <= sizeof(addr1)); |
| } |
| } |
| |
| grpc_tcp_server_start(&exec_ctx, s, &g_pollset, 1, on_connect, NULL); |
| |
| for (i = 0; i < n; i++) { |
| on_connect_result result; |
| int svr_fd; |
| on_connect_result_init(&result); |
| tcp_connect(&exec_ctx, (struct sockaddr *)&addr, addr_len, &result); |
| GPR_ASSERT(result.server_fd >= 0); |
| svr_fd = result.server_fd; |
| GPR_ASSERT(grpc_tcp_server_port_fd(s, result.port_index, result.fd_index) == |
| result.server_fd); |
| GPR_ASSERT(result.port_index == 0); |
| GPR_ASSERT(result.fd_index < svr_fd_count); |
| GPR_ASSERT(result.server == s); |
| if (weak_ref.server == NULL) { |
| server_weak_ref_set(&weak_ref, result.server); |
| } |
| grpc_tcp_server_unref(&exec_ctx, result.server); |
| |
| on_connect_result_init(&result); |
| tcp_connect(&exec_ctx, (struct sockaddr *)&addr1, addr_len, &result); |
| GPR_ASSERT(result.server_fd >= 0); |
| GPR_ASSERT(result.server_fd != svr_fd); |
| GPR_ASSERT(grpc_tcp_server_port_fd(s, result.port_index, result.fd_index) == |
| result.server_fd); |
| GPR_ASSERT(result.port_index == 1); |
| GPR_ASSERT(result.fd_index < svr_fd_count); |
| GPR_ASSERT(result.server == s); |
| grpc_tcp_server_unref(&exec_ctx, result.server); |
| } |
| |
| /* Weak ref to server valid until final unref. */ |
| GPR_ASSERT(weak_ref.server != NULL); |
| GPR_ASSERT(grpc_tcp_server_port_fd(s, 0, 0) >= 0); |
| |
| grpc_tcp_server_unref(&exec_ctx, s); |
| |
| /* Weak ref lost. */ |
| GPR_ASSERT(weak_ref.server == NULL); |
| |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| static void destroy_pollset(grpc_exec_ctx *exec_ctx, void *p, bool success) { |
| grpc_pollset_destroy(p); |
| } |
| |
| int main(int argc, char **argv) { |
| grpc_closure destroyed; |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_test_init(argc, argv); |
| grpc_init(); |
| g_pollset = gpr_malloc(grpc_pollset_size()); |
| grpc_pollset_init(g_pollset, &g_mu); |
| |
| test_no_op(); |
| test_no_op_with_start(); |
| test_no_op_with_port(); |
| test_no_op_with_port_and_start(); |
| test_connect(1); |
| test_connect(10); |
| |
| grpc_closure_init(&destroyed, destroy_pollset, g_pollset); |
| grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed); |
| grpc_exec_ctx_finish(&exec_ctx); |
| grpc_shutdown(); |
| gpr_free(g_pollset); |
| return 0; |
| } |