CODEWITHSUNDEEP
c++c
memesaregood
memesaregood

Reputation: 35

how to keep UDP socket connection open between 2 hosts

I'm working on a simple chatroom based on C++ and UDP, and I'm using this as a base. Every time client-server are saying "hello" to each other, both of them are ending their processes and nothing else, but I'd like to keep the socket open after that, so I can send something else and/or something like that, but haven't found a way to do so, so how do I do such thing? Haven't found much info on what I need, so any help appreciated. Thanks in advance.

Upvotes: 1

Views: 1336

Answers (1)

secret squirrel
secret squirrel

Reputation: 807

You don't need to send a pulse or a heartbeat to keep the socket open. The socket will remain open as long as the program is running or you call close on it.

You can wrap your send and receive in an infinite loop but you should note that the example code you linked to is waaaay too simple for a chat client: you will need to handle errors like the underlying connection being offline ( for example, the interface being disconnected/ brought down, when the send and recv calls will return an error with associated errno ). You should look into using the select, poll and epoll system calls to detect errors and deal with them.

Upvotes: 2

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