sockets

问题 I have a problem with my socket , it is well functioning but when i close the client / close the client window the server lost the connection ( the server needs to stay open and wait for other connection) while True: rlist, wlist, xlist = select.select([server_socket]+open_client_sockets, open_client_sockets, []) for current_socket in rlist: if current_socket is server_socket: (new_socket, address) = server_socket.accept() open_client_sockets.append(new_socket) print 'new member : ' + str

问题 I have a problem with my socket , it is well functioning but when i close the client / close the client window the server lost the connection ( the server needs to stay open and wait for other connection) while True: rlist, wlist, xlist = select.select([server_socket]+open_client_sockets, open_client_sockets, []) for current_socket in rlist: if current_socket is server_socket: (new_socket, address) = server_socket.accept() open_client_sockets.append(new_socket) print 'new member : ' + str

问题 I would like to send a UDP packet in Python and specify the source port but WITHOUT binding. An equivalent with hping3: hping3 -s $sourceport -p $remoteport --udp --file message.bin -d 1024 -c 1 $remoteaddr I have tried to do something like this: s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind((SHOST, SPORT)) But of course, Python tries to bind, and it does not work. Now if I don't bind, I can do: s =

问题 I would like to send a UDP packet in Python and specify the source port but WITHOUT binding. An equivalent with hping3: hping3 -s $sourceport -p $remoteport --udp --file message.bin -d 1024 -c 1 $remoteaddr I have tried to do something like this: s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind((SHOST, SPORT)) But of course, Python tries to bind, and it does not work. Now if I don't bind, I can do: s =

问题 I'm trying to implement a tcp 'echo server'. Simple stuff: Client sends a message to the server. Server receives the message Server converts message to uppercase Server sends modified message to client Client prints the response. It worked well, so I decided to parallelize the server; make it so that it could handle multiple clients at time. Since most Python interpreters have a GIL, multithreading won't cut it. I had to use multiproces... And boy, this is where things went downhill. I'm

问题 I have written a basic client server code in c socket programming using the TCP/IP protocol but i cant figure out how to make it connect to different clients and send/receive different data to and from them as a function to the client (meaning if its the first client send him that data and if its that client send him the other data) and so on. This is the only results i have found were sending the same data to different clients. Current Server: #include <stdio.h> #include <stdlib.h> #include

问题 I have a capture.js file included as a script in index.html which capture image on click via webcam. I need to send the base64URL of the captured image in zeromq client server (TCP client) written in node js so that I can connect send it later to a python zeromq server(TCP server). I have tried a lot of way and searched a lot for the weeks, there is no CDN link for zeromq and couldn't be able to compile it and also the variable shows undefined in client.js . I will really appreciate if any

问题 I have installed multiple times Flask-socketio on my mac, closely reading the instructions and installing the requirements (eventlet/gevent). Athough when i run my simple code to test, it either says that i have not imported the modules or show nothing until i open index.html in my browser where it then displays : The client is using an unsupported version of the Socket.IO or Engine.IO protocols (further occurrences of this error will be logged with level INFO) Here is my app.py code: from

问题 I have installed multiple times Flask-socketio on my mac, closely reading the instructions and installing the requirements (eventlet/gevent). Athough when i run my simple code to test, it either says that i have not imported the modules or show nothing until i open index.html in my browser where it then displays : The client is using an unsupported version of the Socket.IO or Engine.IO protocols (further occurrences of this error will be logged with level INFO) Here is my app.py code: from

问题 I am new to socket programming. My sockets work with localhost or local ip. But why can't I create a socket server with my public ip? When I try to do this in python, it complains "cannot assign requested address". import socket s=socket.socket() host="address" port=5000 s.bind((host, port)) s.listen(5) while True: c, addr=s.accept() result=c.recv(1024) print(result.decode('utf-8')) c.send(""" test """.encode('utf-8')) c.close() My IP I got from this website:http://whatismyip.host/ 回答1: A