For 10.10:
HP-UX 10.10 supports two sets of sockets behavior:
HP-UX 10.01 and UNIX95 (X/Open Sockets).
By default, you receive HP-UX 10.01 sockets.
To use UNIX95, you must make an addition to your make scripts
by including the -l xnet argument with the c89 or cc utilities.
You can also use the lint utility to check for possible violations to
the X/Open Sockets specification by including -l xnet to the argument
list of the lint utility.
You must also define the following for UNIX95 sockets behavior:
Refer to the BSD Sockets Interface Programmers Guide for a list of supported
calls for these two types of sockets behavior. The manual summarizes
differences between the two sets of sockets behavior for each call.
For 10.0:
Two new socket options have been added at 10.0 for more flexibility in
TCP/IP connections and to conform to RFC 1122,
Requirements for Internet Hosts. The new IP socket
option, IP_TOS, allows applications to set the IP Type-Of-Service
flags, and may affect the route chosen for IP packets over routers
or gateways that implement the IP type of service. The new TCP
socket option, TCP_MAXRETRANS, allows applications to close
a connection before the system-wide maximum number of allowable
retransmissions (12) is reached. This can improve the behavior of
applications in fast, reliable networks where multiple
retransmissions are rare.
For more information, refer to the Berkeley IPC Programmer's
Guide and the ip(7p) and
tcp(7p) manpages.
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