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Socket Handling Differences Between Linux & Unix?

 
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Old 07-29-2008
Socket Handling Differences Between Linux & Unix?
Sorry if this is a stupid question!

I have been developing a Java application that I am deploying on both Unix and Linux servers, which uses lots of socket handling. When the server side connection is dropped by the server un-gracefully I have been seeing close_waits and null connections.

I am working through socket handling and fixing problems as I go, but my question is:

Do I need to re-test everything on both Linux and Unix, or is the socket handling identical between the 2? i.e. if I complete all testing on Linux, can I release the applicaion on Unix with 100% confidence that there are no underlying socket handling differences that could cause close_wait or null connection problems later?

Unix = HP-UX 11i
Linux = RH4

Thanks.
 
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LEARN ABOUT MOJAVE

shutdown

SHUTDOWN(2)						      BSD System Calls Manual						       SHUTDOWN(2)

NAME

     shutdown -- shut down part of a full-duplex connection

SYNOPSIS

     #include <sys/socket.h>

     int
     shutdown(int socket, int how);

DESCRIPTION

     The shutdown() call causes all or part of a full-duplex connection on the socket associated with socket to be shut down.  If how is SHUT_RD,
     further receives will be disallowed.  If how is SHUT_WR, further sends will be disallowed.  If how is SHUT_RDWR, further sends and receives
     will be disallowed.

RETURN VALUES

     The shutdown() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi-
     cate the error.

ERRORS

     The call succeeds unless:

     [EBADF]		Socket is not a valid descriptor.

     [EINVAL]		The how argument is invalid.

     [ENOTCONN] 	The specified socket is not connected.

     [ENOTSOCK] 	Socket is a file, not a socket.

SEE ALSO

     connect(2), connectx(2), disconnectx(2), socket(2)

HISTORY

     The shutdown() function call appeared in 4.2BSD.

4.2 Berkeley Distribution					  March 18, 2015					 4.2 Berkeley Distribution