A “persistent connection” model for mobile anddistributed systems
Yongguang Zhang; Son Dao
Computer Communications and Networks, 1995. Proceedings., Fourth International Conference on
Volume , Issue , 20-23 Sep 1995 Page(s):300 - 307
Digital Object Identifier 10.1109/ICCCN.1995.540133
Summary:This paper describes a mechanism, called “persistent
connection” to preserve stream connections after the communicating
peer exits and till it restarts. Such connections have many
applications: to survive failures that crash one party, network
partitions that cut off the two parties, and temporary disconnection in
a mobile computing environment. They can also facilitate suspension of
process execution in a limited resource environment and maintain
connectivity when one party migrates from one machine to another.
Persistent connection uses logical endpoints to hide disconnection from
applications and to achieve location independence. It can be constructed
from the normal “transient” connection that goes down with
processes. Prototypes have been developed on Unix to provide persistent
connections in both the TCP-socket level and the DCE RPC level. Many
existing programs can benefit from this software to achieve transparence
to disconnection and relocation. We conclude that persistent connection
is a convenient communication abstraction for reliable, adaptable, and
reconfigurable applications
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