1 #include <sys/types.h>
2 #include <sys/param.h>
3 #include <sys/socket.h>
4 #include <netinet/in.h>
5 #include "byte.h"
6 #include "socket.h"
7
socket_bind4(int s,const char ip[4],uint16 port)8 int socket_bind4(int s,const char ip[4],uint16 port)
9 {
10 struct sockaddr_in sa;
11
12 byte_zero(&sa,sizeof sa);
13 sa.sin_family = AF_INET;
14 uint16_pack_big((char *) &sa.sin_port,port);
15 byte_copy((char *) &sa.sin_addr,4,ip);
16
17 return bind(s,(struct sockaddr *) &sa,sizeof sa);
18 }
19
socket_bind4_reuse(int s,char ip[4],uint16 port)20 int socket_bind4_reuse(int s,char ip[4],uint16 port)
21 {
22 int opt = 1;
23 setsockopt(s,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof opt);
24 return socket_bind4(s,ip,port);
25 }
26
socket_tryreservein(int s,int size)27 void socket_tryreservein(int s,int size)
28 {
29 while (size >= 1024) {
30 if (setsockopt(s,SOL_SOCKET,SO_RCVBUF,&size,sizeof size) == 0) return;
31 size -= (size >> 5);
32 }
33 }
34