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libowfat/socket/socket_fastopen_connect6.c

29 lines
675 B
C

#include "socket.h"
#ifdef __MINGW32__
#include <windows.h>
#else
#include <sys/types.h>
#include <unistd.h>
#include <sys/socket.h>
#endif
#include <errno.h>
ssize_t socket_fastopen_connect6(int s,const char ip[16],uint16 port,uint32_t scope_id,const char* buf,size_t len) {
#ifndef MSG_FASTOPEN
int r;
{
#else
int r;
if (len)
r=socket_send6_flag(s,buf,len,ip,port,scope_id,MSG_FASTOPEN);
else
r=socket_connect6(s,ip,port,scope_id);
if (r==-1 && (errno==ENOTCONN || errno==EPIPE)) {
#endif
/* apparently the kernel does not support TCP fast open */
r=socket_connect6(s,ip,port,scope_id);
if (r==0) return write(s,buf,len);
}
return r;
}