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EASocketServer component (TCP server)
  • Copy EASocketServer.dll into terminal_directory\MQL4\Libraries folder.
  • Type TCPListen(...) in MetaTrader script (see description below).
  • Run client test application to send messages.

EASocketServer is blocking component so it is suitable for using in scripts. It blocks actual thread until message arrives.


string TCPListen (
int portNumber,
int& result,


[in] Port number.
[out] Operation result. Result is set to 1 in case of success.

Return Value

In case of success returns string sent from external application.


EASocketServer.dll file (see download section) must be located in terminal_directory\MQL4\Libraries folder.

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