C# windows (WinForms) child application locks sockets -

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i have 2 windows c# winforms applications behave same way related issue. behavior exhibits if applications ran in order: main application starts , part of normal working process opens sockets; mixture of tcp udp , multicast. @ time pressing button starts application using c# process related libraries. second app starts ok , ok.

it known , acceptable if start second instance of main app second instance won't able use sockets first 1 owns. issue have if shutdown first app , restart, won't able acquire sockets anymore... until child app shutdown. note second app doesn't use sockets whatsoever, somehow windows keeps sockets locked until second app shuts down.

i have question related programming in c# win forms on topic capital letters people can not distinguish on/off topic:

how solve don't need shutdown second app first 1 able acquire sockets (which -i know - free).

this normal handle inheritance behavior. unfortunately .net process.start passing true binherithandles createprocess (nb. open request allow control of behavior exists: make process.start have option change handle inheritance). work around, use native createprocess instead, see when system.diagnostics.process creates process, inherits inheritable handles parent process.


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