| Roger Meier | 84e4a3c | 2011-09-16 20:58:44 +0000 | [diff] [blame^] | 1 | /* socketpair.c |
| 2 | * Copyright 2007 by Nathan C. Myers <ncm@cantrip.org>; some rights reserved. |
| 3 | * This code is Free Software. It may be copied freely, in original or |
| 4 | * modified form, subject only to the restrictions that (1) the author is |
| 5 | * relieved from all responsibilities for any use for any purpose, and (2) |
| 6 | * this copyright notice must be retained, unchanged, in its entirety. If |
| 7 | * for any reason the author might be held responsible for any consequences |
| 8 | * of copying or use, license is withheld. |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * Licensed to the Apache Software Foundation (ASF) under one |
| 13 | * or more contributor license agreements. See the NOTICE file |
| 14 | * distributed with this work for additional information |
| 15 | * regarding copyright ownership. The ASF licenses this file |
| 16 | * to you under the Apache License, Version 2.0 (the |
| 17 | * "License"); you may not use this file except in compliance |
| 18 | * with the License. You may obtain a copy of the License at |
| 19 | * |
| 20 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 21 | * |
| 22 | * Unless required by applicable law or agreed to in writing, |
| 23 | * software distributed under the License is distributed on an |
| 24 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 25 | * KIND, either express or implied. See the License for the |
| 26 | * specific language governing permissions and limitations |
| 27 | * under the License. |
| 28 | */ |
| 29 | |
| 30 | #include "SocketPair.h" |
| 31 | |
| 32 | // stl |
| 33 | #include <string.h> |
| 34 | |
| 35 | // Win32 |
| 36 | #include <Winsock2.h> |
| 37 | #include <WS2tcpip.h> |
| 38 | |
| 39 | int socketpair(int d, int type, int protocol, int sv[2]) |
| 40 | { |
| 41 | union { |
| 42 | struct sockaddr_in inaddr; |
| 43 | struct sockaddr addr; |
| 44 | } a; |
| 45 | SOCKET listener; |
| 46 | int e; |
| 47 | socklen_t addrlen = sizeof(a.inaddr); |
| 48 | DWORD flags = 0; |
| 49 | int reuse = 1; |
| 50 | |
| 51 | if (sv == 0) { |
| 52 | WSASetLastError(WSAEINVAL); |
| 53 | return SOCKET_ERROR; |
| 54 | } |
| 55 | |
| 56 | listener = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
| 57 | if (listener == INVALID_SOCKET) |
| 58 | return SOCKET_ERROR; |
| 59 | |
| 60 | memset(&a, 0, sizeof(a)); |
| 61 | a.inaddr.sin_family = AF_INET; |
| 62 | a.inaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
| 63 | a.inaddr.sin_port = 0; |
| 64 | |
| 65 | sv[0] = sv[1] = INVALID_SOCKET; |
| 66 | do { |
| 67 | if (setsockopt(listener, SOL_SOCKET, SO_REUSEADDR, |
| 68 | (char*) &reuse, (socklen_t) sizeof(reuse)) == -1) |
| 69 | break; |
| 70 | if (bind(listener, &a.addr, sizeof(a.inaddr)) == SOCKET_ERROR) |
| 71 | break; |
| 72 | if (getsockname(listener, &a.addr, &addrlen) == SOCKET_ERROR) |
| 73 | break; |
| 74 | if (listen(listener, 1) == SOCKET_ERROR) |
| 75 | break; |
| 76 | sv[0] = WSASocket(AF_INET, SOCK_STREAM, 0, NULL, 0, flags); |
| 77 | if (sv[0] == INVALID_SOCKET) |
| 78 | break; |
| 79 | if (connect(sv[0], &a.addr, sizeof(a.inaddr)) == SOCKET_ERROR) |
| 80 | break; |
| 81 | sv[1] = accept(listener, NULL, NULL); |
| 82 | if (sv[1] == INVALID_SOCKET) |
| 83 | break; |
| 84 | |
| 85 | closesocket(listener); |
| 86 | return 0; |
| 87 | |
| 88 | } while (0); |
| 89 | |
| 90 | e = WSAGetLastError(); |
| 91 | closesocket(listener); |
| 92 | closesocket(sv[0]); |
| 93 | closesocket(sv[1]); |
| 94 | WSASetLastError(e); |
| 95 | return SOCKET_ERROR; |
| 96 | } |