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WebSphere MQ client fails to make a connection

When the WebSphere MQ client issues an MQCONN or MQCONNX call to a server, socket and port information is exchanged between the WebSphere MQ client and the server. For any exchange of information to take place, there must be a program on the server machine whose role is to 'listen' on the communications line for any activity. If there is no program doing this, or there is one but it is not configured correctly, the MQCONN or MQCONNX call fails, and the relevant reason code is returned to the WebSphere MQ client application.

If the connection is successful, WebSphere MQ protocol messages are exchanged and further checking takes place. During the WebSphere MQ protocol checking phase, some aspects are negotiated while others cause the connection to fail. It is not until all these checks are successful that the MQCONN or MQCONNX call succeeds.

For information about the MQRC_* reason codes, see the WebSphere MQ Application Programming Reference manual.

 

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