Modified both client and server to take in args from cli, fixed bad file descriptor error

client.py

@@ -128,7 +128,12 @@ def ftp_client(host, port, cert):
     context.check_hostname = False
 
     sock = context.wrap_socket(socket(AF_INET, SOCK_STREAM), server_hostname=host)
-    sock.connect((host, port))
+    try:
+        sock.connect((host, port))
+        print("Connected to " + host + ":" + str(port))
+    except ConnectionRefusedError:
+        print("Connection refused by " + host + ":" + str(port))
+        return
 
     response = sock.recv(BUFFER_SIZE).decode().strip()
     print(response)
@@ -168,18 +173,28 @@ def ftp_client(host, port, cert):
 
 
 if __name__ == "__main__":
-    # FTP Client should be able to define IP and port
+    # Get command line arguments
+    try:
+        ip = sys.argv[1]
+        port = int(sys.argv[2])
+    except IndexError:
+        pass
+
+    # Config file
     config = configparser.ConfigParser()
     config.read('./config/config.ini')
-    ip = config['FTPSERVER']['ip']
-    port = int(config['FTPSERVER']['port'])
     cert = config['SSL']['cert']
 
+    # If no command line arguments, use config file
+    if len(sys.argv) == 1:
+        print("Using Config.ini")
+        # FTP Client should be able to define IP and port
+        ip = config['FTPSERVER']['ip']
+        port = int(config['FTPSERVER']['port'])
+
+
     try:
         ftp_client(ip, port, cert)
     except KeyboardInterrupt:
         print("Client interrupted")
-        try:
-            sys.exit(0)
-        except SystemExit:
-            os._exit(0)
+        sys.exit(0)

server.py

@@ -171,7 +171,7 @@ def handle_connection(conn):
             command = args[0]
             print(f'Command: {command}')
             if command in commands:
-                if commands == handle_quit:
+                if command == 'QUIT':
                     conn.sendall(b'Closing Connection')
                     conn.close()
                     break
@@ -182,7 +182,7 @@ def handle_connection(conn):
             print('Connection closed by client')
             break
         except OSError as e:
-            print(e)
+            print("OS Error: {0}".format(e))
             break
 
         # For FTP client testing
@@ -194,19 +194,23 @@ def handle_connection(conn):
 
 
 def main():
-    # FTP Server should be run with a port number as an argument
-    # if len(sys.argv) != 2:
-    #    print("Usage: python3 server.py <port>")
-    #    return
+    # Get command line arguments
+    try:
+        port = int(sys.argv[1])
+    except IndexError:
+        pass
 
     config = configparser.ConfigParser()
     config.read('./config/config.ini')
 
-    # TODO: Need to allow user to define port through command line as well
-    port = int(config['FTPSERVER']['port'])
+    # SSL certificate and key
     cert = config['SSL']['cert']
     key = config['SSL']['key']
 
+    # If port is not specified, use default port
+    if len(sys.argv) < 2:
+        port = int(config['FTPSERVER']['port'])
+
     # print(cert, key)
 
     context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)