Smallsockets networking problem

[gbr8]

Hi. I'm using Smallsockets to comunicate between an iPhone and a pc.
I can send commands to the pc, but i have problems with reciveing the answer.
I want to ask, what is the cause of the problem, when after sending the command the app is freezing in AbstractSocket class,
in method: "- (int)readDataNSMutableData*)data"
at line: "count = recv(socketfd, readBuffer, readBufferSize, 0);"