added send and recv builtins

samples/client.noja

@@ -23,4 +23,14 @@ if net.connect(fd, { sin_family: net.AF_INET, sin_port: net.htons(port), sin_add
 		return none;
 	}
 
-print('Connected!\n');
+print('Connected!\n');
+
+buffer = newBuffer(16);
+
+buffer[0] = 9;
+buffer[1] = 7;
+buffer[2] = 255;
+
+n = net.send(fd, buffer, 0);
+
+print('Sent ', n, ' bytes: ', buffer, '\n');

samples/server.noja

@@ -22,6 +22,8 @@ if net.listen(fd, backlog) != 0:
 		return none;
 	}
 
+buffer = newBuffer(16);
+
 while true:
 	{
 		client_addr = {};
@@ -34,5 +36,20 @@ while true:
 		print('client_fd   = ', client_fd, '\n');
 		print('client_addr = {', client_addr, '}\n');
 		
-		# ..continue..
+		do 
+			{
+				n = net.recv(client_fd, buffer, 0);
+
+				if n < 0:
+					print('Warning! Failed to read from socket!\n');
+				else if n == 0:
+					{
+						# Client disconnected.
+					}
+				else
+					{
+						print('Received ', n, ' bytes: ', buffer, '\n');
+					}
+			}
+		while n > 0;
 	}