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wsocket.c
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wsocket.c
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#include "wsocket.h"
#ifdef _WIN32
/* winsock */
#include <Windows.h>
#include <stdio.h>
#ifdef __MINGW32__
# define THREAD_LOCAL __thread
#else
# define THREAD_LOCAL __declspec(thread)
#endif
static THREAD_LOCAL char m_msgbuf[256];
int wsocket_lib_init()
{
WSADATA wsadata = {0};
return WSAStartup(MAKEWORD(2, 0), &wsadata);
}
int wsocket_lib_cleanup()
{
return WSACleanup();
}
char* wsocket_strerror(int err)
{
m_msgbuf[0] = '\0';
wchar_t wbuf[256];
wbuf[0] = L'\0';
if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL)) {
wcstombs(m_msgbuf, wbuf, sizeof(m_msgbuf) - 1);
} else {
snprintf(m_msgbuf, sizeof(m_msgbuf), "error code '%d'", err);
}
return m_msgbuf;
}
#else
#include <fcntl.h>
#endif
static int wsocket_configure_blocking(wsocket sock, int blocking)
{
#ifdef _WIN32
unsigned long mode = blocking ? 0 : 1;
return ioctlsocket(sock, FIONBIO, &mode);
#else
int flags = fcntl(sock, F_GETFL, 0);
if (flags == -1) {
return WSOCKET_ERROR;
}
flags = blocking ? (flags & ~O_NONBLOCK) : (flags | O_NONBLOCK);
return fcntl(sock, F_SETFL, flags);
#endif
}
int wsocket_set_nonblocking(wsocket sock)
{
return wsocket_configure_blocking(sock, 0);
}
int wsocket_set_blocking(wsocket sock)
{
return wsocket_configure_blocking(sock, 1);
}