Chapter 4 Connections

All messages are transmitted between processes through connections. A connection is an endpoint of a direct communication link used to send and receive messages between two processes. The two processes, called peer processes, share the link. However, each process has a unique endpoint that it can manipulate independently. Connections can operate on messages in many different ways. Additional features of connections include:

ability to use one of several different interprocess communications (IPC) protocols to transfer messages: TCP/IP or local (non-network)

execution of callback functions at various points while operating on messages to perform user-defined actions

detection of many kinds of network failures and take steps to recover from these failures

request-reply communication capability using messages

optional guaranteed message delivery (GMD)

GMD stores copies of messages in files to enable total recovery from network failures.

thread safety to use in multi-threaded programs

This chapter describes how to use connections and the relationship between connections and messages in the SmartSockets C++ class library. This chapter should be considered a companion to the TIBCO SmartSockets User’s Guide. You can read detailed information on SmartSockets connections in the TIBCO SmartSockets User’s Guide.

Chapter 4 Connections

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