Implemented SCTP stream socket.

net/p2pnet.h

@@ -7,6 +7,10 @@
    int socket_local4(int s, uint32_t *ip, uint16_t *port);
    int socket_connect4(int s, uint32_t ip, uint16_t port);
    int socket_listen(int s, uint32_t *localip, uint16_t *localport);
+   ssize_t socket_read(int s, char *buf, size_t len, int flags);
+   ssize_t socket_write(int s, char *buf, size_t len, int flags);
 
    int socket_tcp4(void);
+
+   int socket_stream_sctp4(void);
 #endif // P2PNET_H

net/sctp.c

@@ -0,0 +1,15 @@
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include "p2pnet.h"
+
+/* Create a SCTP socket.
+ */
+int socket_stream_sctp4(void)
+{
+   int s;
+
+   s = socket(PF_INET, SOCK_STREAM, IPPROTO_SCTP);
+   if (s == -1) return -1;
+   return s;
+}

net/socket.c

@@ -96,3 +96,19 @@ int socket_listen(int s, uint32_t *localip, uint16_t *localport)
    }
    return s;
 }
+
+/* Reads data from a socket, used instead of recv so if a protocol needs
+ * to use something else before or after it can be done here instead of
+ * outside the lib.
+ */
+ssize_t socket_read(int s, char *buf, size_t len, int flags)
+{
+   return recv(s, buf, len, flags);
+}
+
+/* Same reason as socket_read, but to send data instead of receive.
+ */
+ssize_t socket_write(int s, char *buf, size_t len, int flags)
+{
+   return send(s, buf, len, flags);
+}