/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include #ifndef _WIN32 # include # include # include #endif #include "uv.h" #include "task.h" #define NUM_CLIENTS 5 #define TRANSFER_BYTES (1 << 16) #undef MIN #define MIN(a, b) (((a) < (b)) ? (a) : (b)); typedef enum { UNIDIRECTIONAL, DUPLEX } test_mode_t; typedef struct connection_context_s { uv_poll_t poll_handle; uv_timer_t timer_handle; uv_os_sock_t sock; size_t read, sent; int is_server_connection; int open_handles; int got_fin, sent_fin; unsigned int events, delayed_events; } connection_context_t; typedef struct server_context_s { uv_poll_t poll_handle; uv_os_sock_t sock; int connections; } server_context_t; static void delay_timer_cb(uv_timer_t* timer, int status); static test_mode_t test_mode = DUPLEX; static int closed_connections = 0; static int valid_writable_wakeups = 0; static int spurious_writable_wakeups = 0; static int got_eagain(void) { #ifdef _WIN32 return WSAGetLastError() == WSAEWOULDBLOCK; #else return errno == EAGAIN || errno == EINPROGRESS #ifdef EWOULDBLOCK || errno == EWOULDBLOCK; #endif ; #endif } static void set_nonblocking(uv_os_sock_t sock) { int r; #ifdef _WIN32 unsigned long on = 1; r = ioctlsocket(sock, FIONBIO, &on); ASSERT(r == 0); #else int flags = fcntl(sock, F_GETFL, 0); ASSERT(flags >= 0); r = fcntl(sock, F_SETFL, flags | O_NONBLOCK); ASSERT(r >= 0); #endif } static uv_os_sock_t create_nonblocking_bound_socket( struct sockaddr_in bind_addr) { uv_os_sock_t sock; int r; sock = socket(AF_INET, SOCK_STREAM, IPPROTO_IP); #ifdef _WIN32 ASSERT(sock != INVALID_SOCKET); #else ASSERT(sock >= 0); #endif set_nonblocking(sock); #ifndef _WIN32 { /* Allow reuse of the port. */ int yes = 1; r = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof yes); ASSERT(r == 0); } #endif r = bind(sock, (const struct sockaddr*) &bind_addr, sizeof bind_addr); ASSERT(r == 0); return sock; } static void close_socket(uv_os_sock_t sock) { int r; #ifdef _WIN32 r = closesocket(sock); #else r = close(sock); #endif ASSERT(r == 0); } static connection_context_t* create_connection_context( uv_os_sock_t sock, int is_server_connection) { int r; connection_context_t* context; context = (connection_context_t*) malloc(sizeof *context); ASSERT(context != NULL); context->sock = sock; context->is_server_connection = is_server_connection; context->read = 0; context->sent = 0; context->open_handles = 0; context->events = 0; context->delayed_events = 0; context->got_fin = 0; context->sent_fin = 0; r = uv_poll_init_socket(uv_default_loop(), &context->poll_handle, sock); context->open_handles++; context->poll_handle.data = context; ASSERT(r == 0); r = uv_timer_init(uv_default_loop(), &context->timer_handle); context->open_handles++; context->timer_handle.data = context; ASSERT(r == 0); return context; } static void connection_close_cb(uv_handle_t* handle) { connection_context_t* context = (connection_context_t*) handle->data; if (--context->open_handles == 0) { if (test_mode == DUPLEX || context->is_server_connection) { ASSERT(context->read == TRANSFER_BYTES); } else { ASSERT(context->read == 0); } if (test_mode == DUPLEX || !context->is_server_connection) { ASSERT(context->sent == TRANSFER_BYTES); } else { ASSERT(context->sent == 0); } closed_connections++; free(context); } } static void destroy_connection_context(connection_context_t* context) { uv_close((uv_handle_t*) &context->poll_handle, connection_close_cb); uv_close((uv_handle_t*) &context->timer_handle, connection_close_cb); } static void connection_poll_cb(uv_poll_t* handle, int status, int events) { connection_context_t* context = (connection_context_t*) handle->data; unsigned int new_events; int r; ASSERT(status == 0); ASSERT(events & context->events); ASSERT(!(events & ~context->events)); new_events = context->events; if (events & UV_READABLE) { int action = rand() % 7; switch (action) { case 0: case 1: { /* Read a couple of bytes. */ static char buffer[74]; r = recv(context->sock, buffer, sizeof buffer, 0); ASSERT(r >= 0); if (r > 0) { context->read += r; } else { /* Got FIN. */ context->got_fin = 1; new_events &= ~UV_READABLE; } break; } case 2: case 3: { /* Read until EAGAIN. */ static char buffer[931]; r = recv(context->sock, buffer, sizeof buffer, 0); ASSERT(r >= 0); while (r > 0) { context->read += r; r = recv(context->sock, buffer, sizeof buffer, 0); } if (r == 0) { /* Got FIN. */ context->got_fin = 1; new_events &= ~UV_READABLE; } else { ASSERT(got_eagain()); } break; } case 4: /* Ignore. */ break; case 5: /* Stop reading for a while. Restart in timer callback. */ new_events &= ~UV_READABLE; if (!uv_is_active((uv_handle_t*) &context->timer_handle)) { context->delayed_events = UV_READABLE; uv_timer_start(&context->timer_handle, delay_timer_cb, 10, 0); } else { context->delayed_events |= UV_READABLE; } break; case 6: /* Fudge with the event mask. */ uv_poll_start(&context->poll_handle, UV_WRITABLE, connection_poll_cb); uv_poll_start(&context->poll_handle, UV_READABLE, connection_poll_cb); context->events = UV_READABLE; break; default: ASSERT(0); } } if (events & UV_WRITABLE) { if (context->sent < TRANSFER_BYTES && !(test_mode == UNIDIRECTIONAL && context->is_server_connection)) { /* We have to send more bytes. */ int action = rand() % 7; switch (action) { case 0: case 1: { /* Send a couple of bytes. */ static char buffer[103]; int send_bytes = MIN(TRANSFER_BYTES - context->sent, sizeof buffer); ASSERT(send_bytes > 0); r = send(context->sock, buffer, send_bytes, 0); if (r < 0) { ASSERT(got_eagain()); spurious_writable_wakeups++; break; } ASSERT(r > 0); context->sent += r; valid_writable_wakeups++; break; } case 2: case 3: { /* Send until EAGAIN. */ static char buffer[1234]; int send_bytes = MIN(TRANSFER_BYTES - context->sent, sizeof buffer); ASSERT(send_bytes > 0); r = send(context->sock, buffer, send_bytes, 0); if (r < 0) { ASSERT(got_eagain()); spurious_writable_wakeups++; break; } ASSERT(r > 0); valid_writable_wakeups++; context->sent += r; while (context->sent < TRANSFER_BYTES) { send_bytes = MIN(TRANSFER_BYTES - context->sent, sizeof buffer); ASSERT(send_bytes > 0); r = send(context->sock, buffer, send_bytes, 0); if (r <= 0) break; context->sent += r; } ASSERT(r > 0 || got_eagain()); break; } case 4: /* Ignore. */ break; case 5: /* Stop sending for a while. Restart in timer callback. */ new_events &= ~UV_WRITABLE; if (!uv_is_active((uv_handle_t*) &context->timer_handle)) { context->delayed_events = UV_WRITABLE; uv_timer_start(&context->timer_handle, delay_timer_cb, 100, 0); } else { context->delayed_events |= UV_WRITABLE; } break; case 6: /* Fudge with the event mask. */ uv_poll_start(&context->poll_handle, UV_READABLE, connection_poll_cb); uv_poll_start(&context->poll_handle, UV_WRITABLE, connection_poll_cb); context->events = UV_WRITABLE; break; default: ASSERT(0); } } else { /* Nothing more to write. Send FIN. */ int r; #ifdef _WIN32 r = shutdown(context->sock, SD_SEND); #else r = shutdown(context->sock, SHUT_WR); #endif ASSERT(r == 0); context->sent_fin = 1; new_events &= ~UV_WRITABLE; } } if (context->got_fin && context->sent_fin) { /* Sent and received FIN. Close and destroy context. */ close_socket(context->sock); destroy_connection_context(context); context->events = 0; } else if (new_events != context->events) { /* Poll mask changed. Call uv_poll_start again. */ context->events = new_events; uv_poll_start(handle, new_events, connection_poll_cb); } /* Assert that uv_is_active works correctly for poll handles. */ if (context->events != 0) { ASSERT(1 == uv_is_active((uv_handle_t*) handle)); } else { ASSERT(0 == uv_is_active((uv_handle_t*) handle)); } } static void delay_timer_cb(uv_timer_t* timer, int status) { connection_context_t* context = (connection_context_t*) timer->data; int r; /* Timer should auto stop. */ ASSERT(0 == uv_is_active((uv_handle_t*) timer)); /* Add the requested events to the poll mask. */ ASSERT(context->delayed_events != 0); context->events |= context->delayed_events; context->delayed_events = 0; r = uv_poll_start(&context->poll_handle, context->events, connection_poll_cb); ASSERT(r == 0); } static server_context_t* create_server_context( uv_os_sock_t sock) { int r; server_context_t* context; context = (server_context_t*) malloc(sizeof *context); ASSERT(context != NULL); context->sock = sock; context->connections = 0; r = uv_poll_init_socket(uv_default_loop(), &context->poll_handle, sock); context->poll_handle.data = context; ASSERT(r == 0); return context; } static void server_close_cb(uv_handle_t* handle) { server_context_t* context = (server_context_t*) handle->data; free(context); } static void destroy_server_context(server_context_t* context) { uv_close((uv_handle_t*) &context->poll_handle, server_close_cb); } static void server_poll_cb(uv_poll_t* handle, int status, int events) { server_context_t* server_context = (server_context_t*) handle->data; connection_context_t* connection_context; struct sockaddr_in addr; socklen_t addr_len; uv_os_sock_t sock; int r; addr_len = sizeof addr; sock = accept(server_context->sock, (struct sockaddr*) &addr, &addr_len); #ifdef _WIN32 ASSERT(sock != INVALID_SOCKET); #else ASSERT(sock >= 0); #endif set_nonblocking(sock); connection_context = create_connection_context(sock, 1); connection_context->events = UV_READABLE | UV_WRITABLE; r = uv_poll_start(&connection_context->poll_handle, UV_READABLE | UV_WRITABLE, connection_poll_cb); ASSERT(r == 0); if (++server_context->connections == NUM_CLIENTS) { close_socket(server_context->sock); destroy_server_context(server_context); } } static void start_server(void) { server_context_t* context; struct sockaddr_in addr; uv_os_sock_t sock; int r; ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr)); sock = create_nonblocking_bound_socket(addr); context = create_server_context(sock); r = listen(sock, 100); ASSERT(r == 0); r = uv_poll_start(&context->poll_handle, UV_READABLE, server_poll_cb); ASSERT(r == 0); } static void start_client(void) { uv_os_sock_t sock; connection_context_t* context; struct sockaddr_in server_addr; struct sockaddr_in addr; int r; ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &server_addr)); ASSERT(0 == uv_ip4_addr("0.0.0.0", 0, &addr)); sock = create_nonblocking_bound_socket(addr); context = create_connection_context(sock, 0); context->events = UV_READABLE | UV_WRITABLE; r = uv_poll_start(&context->poll_handle, UV_READABLE | UV_WRITABLE, connection_poll_cb); ASSERT(r == 0); r = connect(sock, (struct sockaddr*) &server_addr, sizeof server_addr); ASSERT(r == 0 || got_eagain()); } static void start_poll_test(void) { int i, r; #ifdef _WIN32 { struct WSAData wsa_data; int r = WSAStartup(MAKEWORD(2, 2), &wsa_data); ASSERT(r == 0); } #endif start_server(); for (i = 0; i < NUM_CLIENTS; i++) start_client(); r = uv_run(uv_default_loop(), UV_RUN_DEFAULT); ASSERT(r == 0); /* Assert that at most five percent of the writable wakeups was spurious. */ ASSERT(spurious_writable_wakeups == 0 || (valid_writable_wakeups + spurious_writable_wakeups) / spurious_writable_wakeups > 20); ASSERT(closed_connections == NUM_CLIENTS * 2); MAKE_VALGRIND_HAPPY(); } TEST_IMPL(poll_duplex) { test_mode = DUPLEX; start_poll_test(); return 0; } TEST_IMPL(poll_unidirectional) { test_mode = UNIDIRECTIONAL; start_poll_test(); return 0; }