~/tmp$ ./sockclient & ./sockclient & ./sockclient

First, I'm going to make the assumption that ~/tmp$ is the prompt.
Of the rest, what worries me is the use of ampersand, Donald Duck, &. Bash (I assume you are using Bash) will take that to run the preceeding command in background, however the right-most command is not run in background in that way. When you run jobs in background it is difficult to predict the order of execution, and different results can ensue.

I wonder, did you mean this:
./sockclient && ./sockclient && ./sockclient

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?

In reply to Re: Unix-Domain TCP Server Crashing by cdarke
in thread Unix-Domain TCP Server Crashing by wokka

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