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A comment on WDT, a library to transfer files as fast as possible over multiple TCP paths.

Re:WDT, a library to transfer files as fast as possible over... by mpitt on Tuesday July 21, 2015 @02:54PM (#9924774)
What does "multiple TCP paths" mean? TCP does not deal with paths (routing/forwarding). Is it just a typo for "connections" or does the library really use multiple paths where available?
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Re:WDT, a library to transfer files as fast as possible over... by ldemailly on Tuesday July 21, 2015 @04:59PM (#9925765)
Facebook internally use SDN which hashes source host/port destination host/port to pick paths. By using multiple connections on independent ports we do get multiple path utilized and can thus get better reliability and throughput if some are less healthy than others.
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Re:WDT, a library to transfer files as fast as possible over... by suprjami on Tuesday July 21, 2015 @06:25PM (#9926301)
I expect it actually means multiple routing paths, using one TCP session per route to use the full bandwidth of each route.
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