sockets

问题 I am trying to create an android app that communicates with a local server through a socket. The communication passes simple commands and data in strings using JSON. The client should constantly listen to incoming messages from the server and update the user interface when new data is received. So i have created a network service which is a bound service running in the background. From my activity i bind to the service and receives an instance of the service object. The service object

问题 I am trying to create an android app that communicates with a local server through a socket. The communication passes simple commands and data in strings using JSON. The client should constantly listen to incoming messages from the server and update the user interface when new data is received. So i have created a network service which is a bound service running in the background. From my activity i bind to the service and receives an instance of the service object. The service object

问题 I have a server with two separate Ethernet connections. When I bind a socket in python it defaults to one of the two networks. How do I pull a multicast stream from the second network in Python? I have tried calling bind using the server's IP address on the second network, but that hasn't worked. 回答1: I recommend you don't use INADDR_ANY. In production multicast environments you want to be very specific with your multicast sockets and don't want to be doing things like sending igmp joins out

问题 I have a server with two separate Ethernet connections. When I bind a socket in python it defaults to one of the two networks. How do I pull a multicast stream from the second network in Python? I have tried calling bind using the server's IP address on the second network, but that hasn't worked. 回答1: I recommend you don't use INADDR_ANY. In production multicast environments you want to be very specific with your multicast sockets and don't want to be doing things like sending igmp joins out

问题 I have a server with two separate Ethernet connections. When I bind a socket in python it defaults to one of the two networks. How do I pull a multicast stream from the second network in Python? I have tried calling bind using the server's IP address on the second network, but that hasn't worked. 回答1: I recommend you don't use INADDR_ANY. In production multicast environments you want to be very specific with your multicast sockets and don't want to be doing things like sending igmp joins out

问题 In which situration should we use an async socket (either Tcp or Udp) server over sync socket server? If it's in client side, I understand that we used to use async so that it doesn't block the UI thread.. but I'm not sure why we need to use async on server side.. 回答1: On the server side, it's important to allow parallel processing of clients. If you're processing a large request for one client, you don't want a second client's connect request to time out. This does not mean that you have to

问题 Here is my entire code: It uses user input for the host and the port . Server side code: import socket import subprocess, os print("#####################") print("# Python Port Maker #") print("# #") print("#'To Go Boldy Where'#") print("# No Other Python #") print("# Has Gone #") print("# By Riley #") print("#####################") print(' [*] Be Sure To use https://github.com/Thman558/Just-A-Test/blob/master/socket%20client.py on the other machine') host = input(" [*] What host would you

问题 I have created a Swing application in Netbeans that is basically a chat system (between multiple clients and server using socket programming). Now I wanted to run this application on a webpage. Is this possible without changing any code? 回答1: Now I wanted to run this application on a webpage. Is this possible without changing any code? No. It would have to be a JApplet to be embedded in a web page, and applets have been effectively killed off. See Java Plugin support deprecated and Moving to

问题 I have the following scenario: Rasperry pi connected to a device via Serial port 3g Dongle connected to the raspberry (with the ability to make/recieve calls) One process reading the data from the serial port and redirecting it to a server (using 3g) Another process waiting for a incoming call, and when someone calls the program takes the data from the serial port and redirect it via the 3g dongle using AT commands ( like fax-call). When someone calls, the call is made using AT commands and

问题 I am trying to send raw ethernet frames using packet_mmap. A good example I found is at this gist. However, this example was using link-level raw socket, so the source ethernet address of ethernet frames sent is fixed to be the address of the interface. What I need is to be able to send an arbitrary ethernet frames (the source ethernet address can be arbitrary). So I adopt the gist a little bit by changing fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP)); to be fd = socket(AF_INET,SOCK