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Help => Network => Topic started by: roccio on August 21, 2018, 10:58:20 am

Title: UDP multiple ports
Post by: roccio on August 21, 2018, 10:58:20 am

Hello, I would like to know if it is possible to have two udp sockets receiving on two different port at the same ipaddress.

Thanks

Title: Re: UDP multiple ports
Post by: eXpl0it3r on August 21, 2018, 12:18:04 pm

Yes, that's possible. :)

Title: Re: UDP multiple ports
Post by: roccio on August 21, 2018, 02:31:32 pm

Ok, thank you.

Now I have another question for you masters ;)

I would like to send a quite big image over the net as fast as possible (it must be runtime). I have it compressed so it's like 120K, what's the best method?

It's ok to use UDP (datagram limit) or better go to TCP?

Title: Re: UDP multiple ports
Post by: dabbertorres on August 21, 2018, 06:35:53 pm

I recommend reading about the differences between both protocols.

But, in general, a (simplified) rule of thumb:

If you need perfect replication of the data (ie: a file), you use TCP.
If not, you can use UDP.

Title: Re: UDP multiple ports
Post by: roccio on August 22, 2018, 06:42:13 pm

Is it possible to mix UDP and TCP sockets?

Can I have one UDP socket and another TCP running at the same time?

Title: Re: UDP multiple ports
Post by: dabbertorres on August 22, 2018, 07:26:07 pm

Of course, and is relatively common. For example, DNS uses both UDP and TCP (port 53).