1 files changed, 33 insertions, 0 deletions
diff --git a/socket_bind.c b/socket_bind.c
new file mode 100644
index 0000000..20830a4
--- /dev/null
+++ b/socket_bind.c
@@ -0,0 +1,33 @@
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include "byte.h"
+#include "socket.h"
+
+int socket_bind4(int s,char ip[4],uint16 port)
+{
+  struct sockaddr_in sa;
+
+  byte_zero(&sa,sizeof sa);
+  sa.sin_family = AF_INET;
+  uint16_pack_big((char *) &sa.sin_port,port);
+  byte_copy((char *) &sa.sin_addr,4,ip);
+
+  return bind(s,(struct sockaddr *) &sa,sizeof sa);
+}
+
+int socket_bind4_reuse(int s,char ip[4],uint16 port)
+{
+  int opt = 1;
+  setsockopt(s,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof opt);
+  return socket_bind4(s,ip,port);
+}
+
+void socket_tryreservein(int s,int size)
+{
+  while (size >= 1024) {
+    if (setsockopt(s,SOL_SOCKET,SO_RCVBUF,&size,sizeof size) == 0) return;
+    size -= (size >> 5);
+  }
+}