go udp client/server example

[toxicnaan]

Hey,

my go adventures are going well, I've managed to write a simple tcp
server. However udp is going to require a bit more thinking? Can any
point me to an example go code that uses udp?

What's the best way of handling udp connections go? I'm not really
looking for stella performance, just a clean way of implementing a udp
server and have the ability to reply!

Cheers!
Lee

[Andrew Gerrand]

The UDPConn type shares the same interface (Conn) as TCPConn, with
which you are already familiar.

http://golang.org/pkg/net/#UDPConn

You should be able to program a UDP the same way you do TCP, using the
Read and Write methods.

To specifically read and write UDP packets, use the ReadFromUDP and
WriteToUDP methods.

Andrew

[lee hughes]

netlisten, err := net.Listen("udp", "127.0.0.1:9988");

conn, _ := netlisten.Accept();

log.Println("main(): connected", conn);

unknown network udp

panic: runtime error: invalid memory address or nil pointer dereference

however

netlisten, err := net.Listen("tcp", "127.0.0.1:9988");

conn, _ := netlisten.Accept();

log.Println("main(): connected", conn);

PANIC! :-).

do i specifically need to specify ListenUDP ? I just presumed that if i ask

net.Listen to return a connection type of my choice (udp, tcp).

Probably missing something fundamental here. May a code example

can shut me up.

[ckrueger]

check this thread:
http://groups.google.com/group/golang-nuts/browse_thread/thread/98605e6791698697

On Nov 23, 6:35 am, lee hughes <toxicn...@gmail.com> wrote:
> netlisten, err := net.Listen("udp", "127.0.0.1:9988");
> conn, _ := netlisten.Accept();
> log.Println("main(): connected", conn);
>
> unknown network udp
> panic: runtime error: invalid memory address or nil pointer dereference
>
> however
>
> netlisten, err := net.Listen("tcp", "127.0.0.1:9988");
> conn, _ := netlisten.Accept();
> log.Println("main(): connected", conn);
>
> PANIC! :-).
>
> do i specifically need to specify ListenUDP ? I just presumed that if i ask
> net.Listen to return a connection type of my choice (udp, tcp).
>
> Probably missing something fundamental here. May a code example
> can shut me up.
>
> On Tue, Nov 23, 2010 at 1:42 AM, Andrew Gerrand <a...@golang.org> wrote:

[murny...@gmail.com]

can i ask for your tcp server coding please!!!