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author | Henryk Plötz <henryk@ploetzli.ch> | 2014-10-03 19:58:52 +0200 |
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committer | Henryk Plötz <henryk@ploetzli.ch> | 2014-10-03 19:58:52 +0200 |
commit | 0e5b2871ca6456b01d4bf037a6e68badf1ff1a41 (patch) | |
tree | 97b95b74c9618d85da9aa9451a55a819cd7b1c2e /socket_bind.c | |
download | tinydnssec-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.c | 33 |
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); + } +} |