z/OS Communications Server: IP Messages Volume 3 (EZY)
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EZY4098E

z/OS Communications Server: IP Messages Volume 3 (EZY)
SC27-3656-00

Address already in use (EADDRINUSE)

Explanation

The bind() call cannot bind the address specified to the socket with descriptor s because the address is already in use. The following table displays some of the possible function calls that might return this error value:
bind
The address is already in use. See the SO_REUSADDR option described under getsockopt() and the SO_REUSADDR option described under setsockopt() in the z/OS Communications Server: IP Sockets Application Programming Interface Guide and Reference for more information. This error will also occur if the port specified on the bind has been configured as RESERVED in a TCP/IP profile port reservation statement.

System action

The socket call abends. TCPIP continues.

Operator response

None.

System programmer response

Use the information provided in the table above as a guide to the conditions under which this error can occur. Apply this information to your application, and correct the parameters of the appropriate socket call. For more information, see the z/OS Communications Server: IP Sockets Application Programming Interface Guide and Reference.

Module

TCPERROR

Procedure name

tcperror

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