Add placeholder server sleeping IP environment

variable

app/requestHandler.py

@@ -0,0 +1,58 @@
+import json
+import socket
+import threading
+from utils import docker_container_mapping
+
+
+class RequestHandler(threading.Thread):
+    def __init__(self, port, docker_handler):
+        super().__init__()
+        self.port = port
+        self.docker_handler = docker_handler
+        # Create a TCP/IP socket
+        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        # Bind the socket to the port
+        server_address = ('localhost', self.port)
+        print('starting up on {} port {}'.format(*server_address))
+        self.sock.bind(server_address)
+        # Listen for incoming connections
+        self.sock.listen(1)
+
+    def run(self):
+        while True:
+            print('waiting for a connection on port {}'.format(self.port))
+            self.connection, self.client_address = self.sock.accept()
+            try:
+                print('connection from', self.client_address)
+                self.handle_request()
+            finally:
+                self.connection.close()
+
+    def handle_request(self):
+        print('handling request on port {}'.format(self.port))
+        container_ip = docker_container_mapping().get(str(self.port))
+        if container_ip:
+            request = self.connection.recv(1024)
+            print('---------------------------')
+            print(request)
+            print('---------------------------')
+
+            if request[0] == 0x10:
+                if b'\x01' in request:
+                    print('ping')
+                    self.redirect_to_placeholder()
+                elif b'\x02' in request:
+                    print('join')
+                    print('starting docker container {}'.format(container_ip))
+                    self.docker_handler.get_container_by_ip(
+                        container_ip).start()
+
+            elif request[0] == 0xFE:
+                print('legacy server list ping')
+                self.redirect_to_placeholder()
+
+            else:
+                print('no docker container mapped to this port')
+
+    def redirect_to_placeholder(self):
+        print('redirecting to placeholder')