QUdpsocket send and receive broadcast in linux

[danics]

Why do you think you should bind(line 34) to a broadcast address (line 31) on the Linux machine?

I read this in different forums for example here and see in other opensource too, however binding to IP address dont resolve problem anyway.

I listen to a port bigger than 5000

[danics]

I test this code in ubuntu with Qt 5 library and it works.

so i think maybe problem is network settings of my centos, actually my centos run in a virtual machine, anybody have a suggestion of changing settings of network for broadcast messages localy?

thanks in advance

[ChrisW67]

If you are using a virtual machine and you want it to talk to the outside world and accept connections/UDP from the outside world then you need to choose an appropriate virtual network interface option: usually "Bridged" or something like it. On the other hand, two virtual machines connected only to a shared VM-only network should require nothing special to talk to each other. Also need to check there is no default network firewalling going on in the OS.