keunyoung | b85b275 | 2013-03-08 12:28:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | #include "TcpStream.h" |
| 17 | #include <cutils/sockets.h> |
| 18 | #include <errno.h> |
| 19 | #include <stdio.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <unistd.h> |
| 22 | #include <string.h> |
| 23 | |
| 24 | #ifndef _WIN32 |
| 25 | #include <netinet/in.h> |
| 26 | #include <netinet/tcp.h> |
| 27 | #else |
| 28 | #include <ws2tcpip.h> |
| 29 | #endif |
| 30 | |
| 31 | TcpStream::TcpStream(size_t bufSize) : |
| 32 | SocketStream(bufSize) |
| 33 | { |
| 34 | } |
| 35 | |
| 36 | TcpStream::TcpStream(int sock, size_t bufSize) : |
| 37 | SocketStream(sock, bufSize) |
| 38 | { |
| 39 | // disable Nagle algorithm to improve bandwidth of small |
| 40 | // packets which are quite common in our implementation. |
| 41 | #ifdef _WIN32 |
| 42 | DWORD flag; |
| 43 | #else |
| 44 | int flag; |
| 45 | #endif |
| 46 | flag = 1; |
| 47 | setsockopt( sock, IPPROTO_TCP, TCP_NODELAY, (const char*)&flag, sizeof(flag) ); |
| 48 | } |
| 49 | |
| 50 | int TcpStream::listen(unsigned short port) |
| 51 | { |
| 52 | m_sock = socket_loopback_server(port, SOCK_STREAM); |
| 53 | if (!valid()) return int(ERR_INVALID_SOCKET); |
| 54 | |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | SocketStream * TcpStream::accept() |
| 59 | { |
| 60 | int clientSock = -1; |
| 61 | |
| 62 | while (true) { |
| 63 | struct sockaddr_in addr; |
| 64 | socklen_t len = sizeof(addr); |
| 65 | clientSock = ::accept(m_sock, (sockaddr *)&addr, &len); |
| 66 | |
| 67 | if (clientSock < 0 && errno == EINTR) { |
| 68 | continue; |
| 69 | } |
| 70 | break; |
| 71 | } |
| 72 | |
| 73 | TcpStream *clientStream = NULL; |
| 74 | |
| 75 | if (clientSock >= 0) { |
| 76 | clientStream = new TcpStream(clientSock, m_bufsize); |
| 77 | } |
| 78 | return clientStream; |
| 79 | } |
| 80 | |
| 81 | int TcpStream::connect(unsigned short port) |
| 82 | { |
| 83 | return connect("127.0.0.1",port); |
| 84 | } |
| 85 | |
| 86 | int TcpStream::connect(const char* hostname, unsigned short port) |
| 87 | { |
| 88 | m_sock = socket_network_client(hostname, port, SOCK_STREAM); |
| 89 | if (!valid()) return -1; |
| 90 | return 0; |
| 91 | } |