什么是RDS或可靠的数据报套接字

Question

A quick search on RDS points to the linux man page of reliable datagram sockets http://linux.die.net/man/7/rds

Has anybody used it if yes how are they different from TCP or UDP sockets ?

Answer 1

A few links:

http://linux.die.net/man/7/rds

Currently, RDS can be transported over Infiniband, and loopback. RDS over TCP is disabled, but will be re-enabled in the near future.

[rds-devel] What is RDS and why did we build it ? :

.... is a socket interface - existing UDP apps usual run on RDS with no modifications or require minimal change.

RDS Wire Specification 3.1 :

The RDS protocol allows multiple reliable datagram socket operations between two nodes to share a single connection-oriented connection. Currently supported transports include TCP sockets and IB Verbs Reliable Connected connections .

In other words, it sounds like a message-oriented stream implemented as UDP over TCP.