1 files changed, 23 insertions, 0 deletions

diff --git a/nacl/curvecp/socket_recv.c b/nacl/curvecp/socket_recv.c
new file mode 100644
index 00000000..8b266ba2
--- /dev/null
+++ b/nacl/curvecp/socket_recv.c
@@ -0,0 +1,23 @@
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include "socket.h"
+#include "byte.h"
+
+long long socket_recv(int fd,unsigned char *x,long long xlen,unsigned char *ip,unsigned char *port)
+{
+  struct sockaddr_in sa;
+  socklen_t salen;
+  int r;
+
+  if (xlen < 0) { errno = EPROTO; return -1; }
+  if (xlen > 1048576) xlen = 1048576;
+
+  byte_zero(&sa,sizeof sa);
+  salen = sizeof sa;
+  r = recvfrom(fd,x,xlen,0,(struct sockaddr *) &sa,&salen);
+  byte_copy(ip,4,&sa.sin_addr);
+  byte_copy(port,2,&sa.sin_port);
+  return r;
+}