TCP/IP (Parallel Library) Configuration and Management Manual

Introduction
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
2-16
Programming With the New Socket Provider
(TCPSAM)
Programming With the New Socket Provider (TCPSAM)
Applications rely on the transport provider for making socket requests. With the choice
of two different environments, the application programmer can now specify either the
conventional TCP/IP or the Parallel Library TCP/IP environment just by choosing the
appropriate transport-service provider.
To select the Parallel Library TCP/IP environment, first determine the name of the
TCPSAM process, then use that name in your socket calls. To determine the name of
the TCPSAM process, issue the following SCF command:
-> LISTDEV TCPIP
This SCF LISTDEV command lists all the TCP/IP processes. A program name in the
SCF LISTDEV display of TCPIP means that the process is a conventional TCP/IP
process whereas a program name of TCPSAM means that process is a Parallel Library
TCP/IP process. The following display shows a sample result of the SCF LISTDEV
TCPIP command.
In this example, the processes $ZTC02 and $ZTC03 are TCPSAM processes. These
are the processes you would select when specifying the transport-service provider
name for your applications to access Parallel Library TCP/IP.
Restrictions of Parallel Library TCP/IP
The following features are not supported in Parallel Library TCP/IP:
•
ATM, X.25, and SNAP type subnets
•
PMF and IOMF CRUs
•
Network File System (NFS)
For a complete list of migration issues for Parallel Library TCP/IP, see Summary of
Differences Between Conventional TCP/IP and Parallel Library TCP/IP of the TCP/IP
(Parallel Library) Migration Guide.
RFC Compliance
Parallel Library TCP/IP is based on the 4.4 BSD TCP/IP stack from Berkeley Software
Design, Incorporated.
How to Access Online Help
To access online help for the Parallel Library TCP/IP subsystem, enter HELP at the
command prompt, then enter PTCPIP at the SCF HELP prompt.
1 SCF - T9082G02 - (05AUT99) (26JUL99) - 12/22/1999 14:52:00 System \TIGGER
2 Copyright Hewlett-Packard Company
3
4 LDev Name PPID BPID Type RSize Pri Program
5 107 $ZTCP0 0,285 1,287 (48,0) 32000 200 \TIGGER.$SYSTEM.SYS03.TCPIP
6 141 $ZTC03 3,269 0,0 (48,0) 57344 201 \TIGGER.$SYSTEM.SYS01.TCPSAM
7 154 $ZTC0 0,299 1,286 (48,0) 32000 200 \TIGGER.$SYSTEM.SYS03.TCPIP
8 158 $ZTCP1 1,293 0,302 (48,0) 32000 200 \TIGGER.$SYSTEM.SYS03.TCPIP
9 190 $ZTC02 1,310 0.0 (48,0) 57344 201 \TIGGER.$SYSTEM.SYS01.TCPSAM