net: make socket.recv return the allocated buffer and the message length

vlib/net/socket.v

@@ -206,22 +206,19 @@ pub fn dial(address string, port int) ?Socket {
 }
 
 // send string data to socket
-pub fn (s Socket) send(buf byteptr, len int) int {
-	res := C.send(s.sockfd, buf, len, 0)
-//	if res < 0 {
-//		return error('socket: send failed')
-//	}
+pub fn (s Socket) send(buf byteptr, len int) int? {
+	res := int( C.send(s.sockfd, buf, len, 0) )
+	if res < 0 {
+		return error('socket: send failed')
+	}
 	return res
 }
 
 // receive string data from socket
-pub fn (s Socket) recv(bufsize int) byteptr {
+pub fn (s Socket) recv(bufsize int) (byteptr, int) {
 	buf := malloc(bufsize)
-	res := C.recv(s.sockfd, buf, bufsize, 0)
-//	if res < 0 {
-//		return error('socket: recv failed')
-//	}
-	return buf
+	res := int( C.recv(s.sockfd, buf, bufsize, 0) )
+	return buf, res
 }
 
 // TODO: remove cread/2 and crecv/2 when the Go net interface is done

vlib/net/socket_test.v

@@ -17,9 +17,13 @@ fn test_socket() {
 	
 	message := 'Hello World'
 	socket.send(message.str, message.len)	
+	$if debug {	println('message send: $message')	}
+	$if debug {	println('send socket: $socket.sockfd')	}
 
-	bytes := client.recv(1024)
-	received := tos(bytes, message.len)
+	bytes, blen := client.recv(1024) 
+	received := tos(bytes, blen)
+	$if debug {	println('message received: $received')	}
+	$if debug {	println('client: $client.sockfd')	}
 
 	assert message == received