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#include <netinet/in.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <errno.h>
#include "close.h" /* better use unistd.h ? */
#include "error.h"
#include "ndelay.h"
#include "socket_if.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 = 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 = 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 = 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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