Socket communication in HPUX

[Kenneth Yap]

Dear Expert,
Is there any kernel parameter can be set forcontrol the socket transaction or it depend on the application itself ?

Thanks

[James R. Ferguson]

Hi:

I'm not quite sure for what you're looking. The application defines the socket properties such as IP address and port number.

There are TCP/IP timing parameters that control the birth-and-death cycle of a connecton. Take a look at the man pages for 'ndd'. For instance to see all TCP related parameters, do:

# ndd -get /dev/tcp ?

...JRF...

[Vincenzo Restuccia]

Try lsof from http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/lsof-4.55/

[A. Clay Stephenson]

Hi Kenneth,

As James mentioned a few of the parameters are set at the kernel/driver level but the vast majority is done at the application level.
e.g. Blocking vs. Non-blocking I/O, Connection Oriented Service vs Connectionless Service.

If you can be a bit more specific in your question, perhaps a better answer can be provided.

Regards, Clay

[Brian Hackley]

Kenneth,
Sockets programs control their own fate in general, just like a program that writes to any file (a socket is generally just another file descriptor). man setsockopt(2) for more specifics, and also look at the example programs on any HPUX system in:
/usr/lib/demos/networking/socket
Reference: "Unix Network Programming" by Stevens. Also http://docs.hp.com -> Networking/Communications -> LAN/9000 -> BSD Sockets Interface Programmer's Guide
Hope this helps,
-> Brian Hackley