aboutsummaryrefslogtreecommitdiff
path: root/socket_bind.c
diff options
context:
space:
mode:
authorHenryk Plötz <henryk@ploetzli.ch>2014-10-03 19:58:52 +0200
committerHenryk Plötz <henryk@ploetzli.ch>2014-10-03 19:58:52 +0200
commit0e5b2871ca6456b01d4bf037a6e68badf1ff1a41 (patch)
tree97b95b74c9618d85da9aa9451a55a819cd7b1c2e /socket_bind.c
downloadtinydnssec-0e5b2871ca6456b01d4bf037a6e68badf1ff1a41.tar.gz
tinydnssec-0e5b2871ca6456b01d4bf037a6e68badf1ff1a41.tar.bz2
Initial commit of djbdns-1.05.tar.gz
Source was http://cr.yp.to/djbdns/djbdns-1.05.tar.gz, SHA1 2efdb3a039d0c548f40936aa9cb30829e0ce8c3d
Diffstat (limited to 'socket_bind.c')
-rw-r--r--socket_bind.c33
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);
+ }
+}