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#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include "close.h" /* better use unistd.h ? */
#include "ndelay.h"
#include "socket_if.h"
#include "error.h"
#ifndef EAFNOSUPPORT
#define EAFNOSUPPORT EINVAL
#endif
/**
* @file socket_tcp.c
* @authors djb, fefe, feh
* @ref ucspi-tcp6
* @brief setup TCP stream socket
*/
int socket_tcp4(void)
{
int s;
s = socket(AF_INET,SOCK_STREAM,0);
if (s != -1)
if (ndelay_on(s) == -1) { close(s); return -1; }
return s;
}
int socket_tcp6(void)
{
int s;
s = socket(AF_INET6,SOCK_STREAM,0);
if (s != -1)
if (ndelay_on(s) == -1) { close(s); return -1; }
return s;
}
int socket_tcp(void)
{
int s;
s = socket(AF_INET6,SOCK_STREAM,0);
if (s == -1)
if (errno == EINVAL || errno == EAFNOSUPPORT || errno == EPROTO || errno == EPROTONOSUPPORT)
s = socket(AF_INET,SOCK_STREAM,0);
if (s != -1)
if (ndelay_on(s) == -1) { close(s); return -1; }
return s;
}
int socket_tcpnodelay(int s)
{
int opt = 1;
return setsockopt(s,IPPROTO_TCP,1,&opt,sizeof(opt)); /* 1 == TCP_NODELAY */
}
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