实现端口转发功能，经测试，ssh、http可以正常使用

target.py

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+
+
+import os
+import sys
+import json
+import socket
+
+
+import prot_codec as pc
+
+
+
+# 定义服务器和客户端
+# device:
+# server
+# client
+# 定义操作类型
+# option:
+# connect
+# disconnect
+# data
+# login
+
+
+_tcp_server=None
+_tcp_client=None
+
+
+
+class tcp_target(object):
+  def __init__(self,tcp_handler:socket):
+    self.handler=tcp_handler
+    self.state="idle"
+  def recv_handler(self,recv_data:bytearray):
+    global _tcp_client
+    global _tcp_server
+    cmd,data=pc.decode(recv_data)
+    print(cmd.decode('utf-8'))
+    j=json.loads(cmd)
+    if(j["device"]=="client"):
+      if(j["option"]=="login"):
+        if(_tcp_client is not None):
+          _tcp_client.close()
+        _tcp_client=self.handler
+      else:
+        if(_tcp_server is not None):
+          _tcp_server.send(recv_data)
+    if(j["device"]=="server"):
+      if(j["option"]=="login"):
+        if(_tcp_server is not None):
+          _tcp_server.close()
+        _tcp_server=self.handler
+      else:
+        if(_tcp_client is not None):
+          _tcp_client.send(recv_data)
+
+