David Pursell | 0eb8e1b | 2016-01-14 17:18:27 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | // Tests socket functionality using loopback connections. Requires IPv4 and |
| 18 | // IPv6 capabilities, and that kTestPort is available for loopback |
| 19 | // communication. These tests also assume that no UDP packets are lost, |
| 20 | // which should be the case for loopback communication, but is not guaranteed. |
| 21 | |
| 22 | #include <cutils/sockets.h> |
| 23 | |
David Pursell | 572bce2 | 2016-01-15 14:19:56 -0800 | [diff] [blame] | 24 | #include <time.h> |
| 25 | |
David Pursell | 0eb8e1b | 2016-01-14 17:18:27 -0800 | [diff] [blame] | 26 | #include <gtest/gtest.h> |
| 27 | |
| 28 | enum { |
| 29 | // This port must be available for loopback communication. |
| 30 | kTestPort = 54321 |
| 31 | }; |
| 32 | |
| 33 | // Makes sure the passed sockets are valid, sends data between them, and closes |
| 34 | // them. Any failures are logged with gtest. |
| 35 | // |
| 36 | // On Mac recvfrom() will not fill in the address for TCP sockets, so we need |
| 37 | // separate logic paths depending on socket type. |
| 38 | static void TestConnectedSockets(cutils_socket_t server, cutils_socket_t client, |
| 39 | int type) { |
| 40 | ASSERT_NE(INVALID_SOCKET, server); |
| 41 | ASSERT_NE(INVALID_SOCKET, client); |
| 42 | |
| 43 | char buffer[3]; |
| 44 | sockaddr_storage addr; |
| 45 | socklen_t addr_size = sizeof(addr); |
| 46 | |
| 47 | // Send client -> server first to get the UDP client's address. |
| 48 | ASSERT_EQ(3, send(client, "foo", 3, 0)); |
| 49 | if (type == SOCK_DGRAM) { |
| 50 | EXPECT_EQ(3, recvfrom(server, buffer, 3, 0, |
| 51 | reinterpret_cast<sockaddr*>(&addr), &addr_size)); |
| 52 | } else { |
| 53 | EXPECT_EQ(3, recv(server, buffer, 3, 0)); |
| 54 | } |
| 55 | EXPECT_EQ(0, memcmp(buffer, "foo", 3)); |
| 56 | |
| 57 | // Now send server -> client. |
| 58 | if (type == SOCK_DGRAM) { |
| 59 | ASSERT_EQ(3, sendto(server, "bar", 3, 0, |
| 60 | reinterpret_cast<sockaddr*>(&addr), addr_size)); |
| 61 | } else { |
| 62 | ASSERT_EQ(3, send(server, "bar", 3, 0)); |
| 63 | } |
| 64 | EXPECT_EQ(3, recv(client, buffer, 3, 0)); |
| 65 | EXPECT_EQ(0, memcmp(buffer, "bar", 3)); |
| 66 | |
| 67 | EXPECT_EQ(0, socket_close(server)); |
| 68 | EXPECT_EQ(0, socket_close(client)); |
| 69 | } |
| 70 | |
David Pursell | 572bce2 | 2016-01-15 14:19:56 -0800 | [diff] [blame] | 71 | // Tests receive timeout. The timing verification logic must be very coarse to |
| 72 | // make sure different systems can all pass these tests. |
| 73 | void TestReceiveTimeout(cutils_socket_t sock) { |
| 74 | time_t start_time; |
| 75 | char buffer[32]; |
| 76 | |
| 77 | // Make sure a 20ms timeout completes in 1 second or less. |
| 78 | EXPECT_EQ(0, socket_set_receive_timeout(sock, 20)); |
| 79 | start_time = time(nullptr); |
| 80 | EXPECT_EQ(-1, recv(sock, buffer, sizeof(buffer), 0)); |
| 81 | EXPECT_LE(difftime(time(nullptr), start_time), 1.0); |
| 82 | |
| 83 | // Make sure a 1250ms timeout takes 1 second or more. |
| 84 | EXPECT_EQ(0, socket_set_receive_timeout(sock, 1250)); |
| 85 | start_time = time(nullptr); |
| 86 | EXPECT_EQ(-1, recv(sock, buffer, sizeof(buffer), 0)); |
| 87 | EXPECT_LE(1.0, difftime(time(nullptr), start_time)); |
| 88 | } |
| 89 | |
David Pursell | 0eb8e1b | 2016-01-14 17:18:27 -0800 | [diff] [blame] | 90 | // Tests socket_inaddr_any_server() and socket_network_client() for IPv4 UDP. |
| 91 | TEST(SocketsTest, TestIpv4UdpLoopback) { |
| 92 | cutils_socket_t server = socket_inaddr_any_server(kTestPort, SOCK_DGRAM); |
| 93 | cutils_socket_t client = socket_network_client("127.0.0.1", kTestPort, |
| 94 | SOCK_DGRAM); |
| 95 | |
| 96 | TestConnectedSockets(server, client, SOCK_DGRAM); |
| 97 | } |
| 98 | |
| 99 | // Tests socket_inaddr_any_server() and socket_network_client() for IPv4 TCP. |
| 100 | TEST(SocketsTest, TestIpv4TcpLoopback) { |
| 101 | cutils_socket_t server = socket_inaddr_any_server(kTestPort, SOCK_STREAM); |
| 102 | ASSERT_NE(INVALID_SOCKET, server); |
| 103 | |
| 104 | cutils_socket_t client = socket_network_client("127.0.0.1", kTestPort, |
| 105 | SOCK_STREAM); |
| 106 | cutils_socket_t handler = accept(server, nullptr, nullptr); |
| 107 | EXPECT_EQ(0, socket_close(server)); |
| 108 | |
| 109 | TestConnectedSockets(handler, client, SOCK_STREAM); |
| 110 | } |
| 111 | |
| 112 | // Tests socket_inaddr_any_server() and socket_network_client() for IPv6 UDP. |
| 113 | TEST(SocketsTest, TestIpv6UdpLoopback) { |
| 114 | cutils_socket_t server = socket_inaddr_any_server(kTestPort, SOCK_DGRAM); |
| 115 | cutils_socket_t client = socket_network_client("::1", kTestPort, |
| 116 | SOCK_DGRAM); |
| 117 | |
| 118 | TestConnectedSockets(server, client, SOCK_DGRAM); |
| 119 | } |
| 120 | |
| 121 | // Tests socket_inaddr_any_server() and socket_network_client() for IPv6 TCP. |
| 122 | TEST(SocketsTest, TestIpv6TcpLoopback) { |
| 123 | cutils_socket_t server = socket_inaddr_any_server(kTestPort, SOCK_STREAM); |
| 124 | ASSERT_NE(INVALID_SOCKET, server); |
| 125 | |
| 126 | cutils_socket_t client = socket_network_client("::1", kTestPort, |
| 127 | SOCK_STREAM); |
| 128 | cutils_socket_t handler = accept(server, nullptr, nullptr); |
| 129 | EXPECT_EQ(0, socket_close(server)); |
| 130 | |
| 131 | TestConnectedSockets(handler, client, SOCK_STREAM); |
| 132 | } |
David Pursell | 572bce2 | 2016-01-15 14:19:56 -0800 | [diff] [blame] | 133 | |
| 134 | // Tests setting a receive timeout for UDP sockets. |
| 135 | TEST(SocketsTest, TestUdpReceiveTimeout) { |
| 136 | cutils_socket_t sock = socket_inaddr_any_server(kTestPort, SOCK_DGRAM); |
| 137 | ASSERT_NE(INVALID_SOCKET, sock); |
| 138 | |
| 139 | TestReceiveTimeout(sock); |
| 140 | |
| 141 | EXPECT_EQ(0, socket_close(sock)); |
| 142 | } |
| 143 | |
| 144 | // Tests setting a receive timeout for TCP sockets. |
| 145 | TEST(SocketsTest, TestTcpReceiveTimeout) { |
| 146 | cutils_socket_t server = socket_inaddr_any_server(kTestPort, SOCK_STREAM); |
| 147 | ASSERT_NE(INVALID_SOCKET, server); |
| 148 | |
| 149 | cutils_socket_t client = socket_network_client("localhost", kTestPort, |
| 150 | SOCK_STREAM); |
| 151 | cutils_socket_t handler = accept(server, nullptr, nullptr); |
| 152 | EXPECT_EQ(0, socket_close(server)); |
| 153 | |
| 154 | TestReceiveTimeout(handler); |
| 155 | |
| 156 | EXPECT_EQ(0, socket_close(client)); |
| 157 | EXPECT_EQ(0, socket_close(handler)); |
| 158 | } |