examples/network/: Use getaddrinfo() result in easy way.

Instead of extracting 4th element, extact last. Much easier to remember!

examples/network/http_client.py

@@ -9,7 +9,7 @@ def main(use_stream=False):
 
     ai = socket.getaddrinfo("google.com", 80)
     print("Address infos:", ai)
-    addr = ai[0][4]
+    addr = ai[0][-1]
 
     print("Connect address:", addr)
     s.connect(addr)

examples/network/http_client_ssl.py

@@ -13,7 +13,7 @@ def main(use_stream=True):
 
     ai = _socket.getaddrinfo("google.com", 443)
     print("Address infos:", ai)
-    addr = ai[0][4]
+    addr = ai[0][-1]
 
     print("Connect address:", addr)
     s.connect(addr)

examples/network/http_server.py

@@ -16,7 +16,7 @@ def main(use_stream=False):
     # Binding to all interfaces - server will be accessible to other hosts!
     ai = socket.getaddrinfo("0.0.0.0", 8080)
     print("Bind address info:", ai)
-    addr = ai[0][4]
+    addr = ai[0][-1]
 
     s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
     s.bind(addr)

examples/network/http_server_ssl.py

@@ -17,7 +17,7 @@ def main(use_stream=True):
     # Binding to all interfaces - server will be accessible to other hosts!
     ai = socket.getaddrinfo("0.0.0.0", 8443)
     print("Bind address info:", ai)
-    addr = ai[0][4]
+    addr = ai[0][-1]
 
     s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
     s.bind(addr)