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CDE 1.1: Remote Procedure Call
Copyright © 1997 The Open Group

Protocol Sequence Strings

This appendix lists valid RPC protocol sequence strings. These can be used with routines that take a protocol sequence string argument (type unsigned_char_t*). They can also be used to construct the rpc-protocol-sequence portion of a string binding. (See RPC Data Types for more information on protocol sequence strings and string bindings.)

RPC Protocol Sequence Strings shows the valid RPC protocol sequence strings.

String Description
"ncacn_ip_tcp" CO over Internet Protocol: Transmission Control Protocol (TCP/IP)
"ncacn_dnet_nsp" CO over DECnet: Network Services Protocol (DECnet Phase IV)
"ncacn_osi_dna" CO over Open Systems Interconnection (DECnet Phase V)
"ip" CL over Internet Protocol: User Datagram Protocol (UDP/IP)
"ncadg_ip_udp"  
"dds" CL over Domain Datagram Service
"ncadg_dds"  
"ncacn_at_dsp" CO over Appletalk
"ncadg_at_ddp" CL over Appletalk
"ncadg_nb" CL over NetBIOS
"ncacn_vns_spp" CO over VINES SPP protocol
"ncadg_vns_ipc" CL over VINES IPC protocol
"ncacn_osi_mosi" CO over a seven-layer minimal OSI ("mOSI") stack
"ncadg_osi_clsn" CL over a seven-layer OSI stack
"ncacn_nb_stream" CO over NetBIOS datagram protocols
"ncadg_nb_dgram" CL over NetBIOS session protocols
"ncacn_unix_stream" CO over Unix Domain sockets
"ncadg_unix_dgram" CL over Unix Domain sockets

Table: RPC Protocol Sequence Strings

To ensure interoperation, applications should use only these strings. Not all implementations support all the protocol sequences listed. Applications can use a particular protocol sequence only if the implementation supports that sequence.

RPC Data Types shows how to construct the network address and endpoint portions of a string binding for the TCP/IP and UDP/IP protocols. Contact OSF for information on constructing string bindings for the other protocol sequences or to obtain protocol string assignments. To avoid conflicts or multiple strings for a protocol sequence, all protocol sequence strings must be registered with OSF.

Please note that the html version of this specification may contain formatting aberrations. The definitive version is available as an electronic publication on CD-ROM from The Open Group.

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