lib/socket: add an easier server example

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/socket/examples/socket_simple_server.nit b/lib/socket/examples/socket_simple_server.nit
new file mode 100644 (file)
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+++ b/lib/socket/examples/socket_simple_server.nit
@@ -0,0 +1,50 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Simple server example using a non-blocking `TCPServer`
+module socket_simple_server
+
+import socket
+
+if args.is_empty then
+       print "Usage : socket_simple_server <port>"
+       exit 1
+end
+
+var port = args[0].to_i
+
+# Open the listening socket
+var socket = new TCPServer(port)
+socket.listen 4
+socket.blocking = false
+
+print "Listening on port {socket.port}"
+
+# Loop until a single client connects
+var client: nullable TCPStream = null
+while client == null do
+       printn "."
+       sys.nanosleep(0, 200000)
+
+       client = socket.accept
+end
+print " Connected"
+
+# Communicate
+print client.read_line
+client.write "Hello client!\n"
+print client.read_line
+client.write "Bye client!\n"
+
+client.close

diff --git a/tests/sav/socket_simple_server.res b/tests/sav/socket_simple_server.res
new file mode 100644 (file)
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+++ b/tests/sav/socket_simple_server.res
@@ -0,0 +1 @@
+Usage : socket_simple_server <port>