Hi Hilaire, Check UDPSocketEchoTest for a good, simple example of using UDP sockets in Pharo.
You should not do #connectTo:port: but just #setPort: and listen. HTH, Sven > On 20 May 2018, at 20:59, Hilaire <[email protected]> wrote: > > Hi, > > I try to figure out this matter. I am just new to this domain so excuse me > for the obvious the errors. > > To broadcast an IP, this seems to work: > > | socket | > > socket := Socket newUDP. > socket setOption: 'SO_BROADCAST' value: true. > 10 timesRepeat: [ > socket sendUDPData: '10.7.2.1' toHost: #[255 255 255 255] port: 9999. > (Delay forSeconds: 1) wait. > ]. > socket closeAndDestroy. > > Then I can listen from the shell: with: nc -ulk 9999 > > Now for the listener part, I wrote something like: > > | socket data | > socket := Socket newUDP. > socket connectTo: NetNameResolver loopBackAddress port: 9999. > socket waitForConnectionFor: 2. > [data := socket receiveDataTimeout: 5. > data crLog] ensure: [ socket closeAndDestroy] > > But I got an error when connecting the socket, the debugger message is: > > "InvalidSocketStatusException: Socket status must Unconnected before opening > a new connection" > > So far I don't see understand this error. Port 9999 is not in use, and > running again after this error the broadcast code does not lead to an error. > Any idea? > > Thanks > > Hilaire > > > -- > Dr. Geo > http://drgeo.eu > > >
