transmission/third-party/miniupnp/receivedata.c

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2011-07-26 01:36:30 +00:00
/* $Id: receivedata.c,v 1.1 2011/04/11 08:21:47 nanard Exp $ */
/* Project : miniupnp
* Author : Thomas Bernard
* Copyright (c) 2011 Thomas Bernard
* This software is subject to the conditions detailed in the
* LICENCE file provided in this distribution. */
#include <stdio.h>
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <unistd.h>
#if defined(__amigaos__) && !defined(__amigaos4__)
#define socklen_t int
#else /* #if defined(__amigaos__) && !defined(__amigaos4__) */
#include <sys/select.h>
#endif /* #else defined(__amigaos__) && !defined(__amigaos4__) */
#include <sys/socket.h>
#if !defined(__amigaos__) && !defined(__amigaos4__)
#include <poll.h>
#endif
#include <errno.h>
#define MINIUPNPC_IGNORE_EINTR
#endif
#ifdef WIN32
#define PRINT_SOCKET_ERROR(x) printf("Socket error: %s, %d\n", x, WSAGetLastError());
#else
#define PRINT_SOCKET_ERROR(x) perror(x)
#endif
#include "receivedata.h"
int
receivedata(int socket, char * data, int length, int timeout)
{
int n;
#if !defined(WIN32) && !defined(__amigaos__) && !defined(__amigaos4__)
/* using poll */
struct pollfd fds[1]; /* for the poll */
#ifdef MINIUPNPC_IGNORE_EINTR
do {
#endif
fds[0].fd = socket;
fds[0].events = POLLIN;
n = poll(fds, 1, timeout);
#ifdef MINIUPNPC_IGNORE_EINTR
} while(n < 0 && errno == EINTR);
#endif
if(n < 0) {
PRINT_SOCKET_ERROR("poll");
return -1;
} else if(n == 0) {
/* timeout */
return 0;
}
#else /* !defined(WIN32) && !defined(__amigaos__) && !defined(__amigaos4__) */
/* using select under WIN32 and amigaos */
fd_set socketSet;
TIMEVAL timeval;
FD_ZERO(&socketSet);
FD_SET(socket, &socketSet);
timeval.tv_sec = timeout / 1000;
timeval.tv_usec = (timeout % 1000) * 1000;
n = select(FD_SETSIZE, &socketSet, NULL, NULL, &timeval);
if(n < 0) {
PRINT_SOCKET_ERROR("select");
return -1;
} else if(n == 0) {
return 0;
}
#endif
n = recv(socket, data, length, 0);
if(n<0) {
PRINT_SOCKET_ERROR("recv");
}
return n;
}