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-rw-r--r--src/socket_udp.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/socket_udp.c b/src/socket_udp.c
new file mode 100644
index 0000000..743cdf1
--- /dev/null
+++ b/src/socket_udp.c
@@ -0,0 +1,57 @@
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include "close.h" /* better use unistd.h ? */
+#include "ndelay.h"
+#include "socket_if.h"
+#include "error.h"
+
+#ifndef EAFNOSUPPORT
+#define EAFNOSUPPORT EINVAL
+#endif
+
+/**
+ @file socket_udp.c
+ @author djb, fefe, feh
+ @source ucspi-tcp6
+ @brief setup a UDP message socket
+*/
+
+int socket_udp6(void)
+{
+ int s;
+
+ s = socket(AF_INET6,SOCK_DGRAM,0);
+ if (s != -1)
+ if (ndelay_on(s) == -1) { close(s); return -1; }
+
+ return s;
+}
+
+int socket_udp4(void)
+{
+ int s;
+
+ s = socket(AF_INET,SOCK_DGRAM,0);
+ if (s != -1)
+ if (ndelay_on(s) == -1) { close(s); return -1; }
+
+ return s;
+}
+
+int socket_udp(void)
+{
+ int s;
+
+ s = socket(AF_INET6,SOCK_DGRAM,0);
+ if (s == -1)
+ if (errno == EINVAL || errno == EAFNOSUPPORT || errno == EPROTO || errno == EPROTONOSUPPORT)
+ s = socket(AF_INET,SOCK_DGRAM,0);
+
+ if (s != -1)
+ if (ndelay_on(s) == -1) { close(s); return -1; }
+
+ return s;
+}