连接客户端套接字和服务器套接字的问题

Question

我有一台在 IP 地址为 192.168.1.11 的台式机上运行的服务器，客户端代码在通过 OpenVPN 连接访问的服务器上运行。 当我运行下面的代码客户端发送请求但服务器没有收到它。

服务器.py：

context=zmq.Context()
socket=context.socket(zmq.REP)
socket.bind("tcp://*:8080")
while True:
  message=socket.recv_pyobj()
  print("%s:%s" %(message.get(1)[0],message.get(1)[1]))
  socket.send_pyobj({1:[message.get(1)[0],message.get(1)[1]]})

客户端.py

socket=context.socket(zmq.REQ)
socket.connect("tcp://192.168.1.11:8080")
name="Test"
while True:
   message=input("Test Message")
   socket.send_pyobj(({1:[name,message]}))

非常感谢您的帮助。

Answer 1

问： “连接客户端套接字和服务器套接字的问题”

步骤 0：证明已实现 OSI-ISO-Layer-3 可见性traceroute <targetIP>

第 1 步：实现到<targetIP>的可见路由后，修复代码以满足记录的REQ/REP属性

第 2 步：在实现了到<targetIP>和REQ/REP的可见路由之后，我们应该提高代码的健壮性

context = zmq.Context()
socket  = context.socket( zmq.REP )
socket.bind( "tcp://*:8080" )
#---------------------------------------------- # ROBUSTNESS CONFIGs
socket.setsockopt( zmq.LINGER,     0   )        # .set explicitly
socket.setsockopt( zmq.MAXMSGSIZE, ... )        # .set safety ceiling
socket.setsockopt( ...,            ... )        # .set ...
#---------------------------------------------- # ROBUSTNESS CONFIGs

while True:
    message = socket.recv_pyobj()            # .recv() a request from REQ-side
    print( "%s:%s" % ( message.get(1)[0],    #         shall improve robustness
                       message.get(1)[1]     #         for cases other than this
                       )
           )
    socket.send_pyobj( { 1: [ message.get(1)[0], # REP must "answer" to REQ
                              message.get(1)[1]
                              ]
                         }
                  )

---

TARGET_IP   = "<targetIP>"                      # <targetIP> from Step 0
PORT_NUMBER = 8080

socket = context.socket( zmq.REQ )
socket.connect( "tcp://{0:}:{1:}".format( TARGET_IP, PORT_NUMBER ) )
#---------------------------------------------- # ROBUSTNESS CONFIGs
socket.setsockopt( zmq.LINGER,     0   )        # .set explicitly
socket.setsockopt( zmq.MAXMSGSIZE, ... )        # .set safety ceiling
socket.setsockopt( ...,            ... )        # .set ...
#---------------------------------------------- # ROBUSTNESS CONFIGs

name = "Test"
while True:
    message = input( "Test Message" )
    socket.send_pyobj( ( { 1: [ name,           # REQ-side sends a request
                                message         #                  here
                                ]               #          bearing a tuple
                           }                    #             with a dict
                         )                      #           having a list
                       )                        #              for a single key
    #------------------------------------------ # REQ-side now MUST also .recv()
    _ = socket.recv()                           #          before it can .send() again