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Closing streams and bitswap #5247

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Stebalien opened this issue Jul 17, 2018 · 0 comments · Fixed by #5258
Closed

Closing streams and bitswap #5247

Stebalien opened this issue Jul 17, 2018 · 0 comments · Fixed by #5258
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topic/interop Interoperability topic/perf Performance

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Bitswap now uses FullClose in SendMessage when sending outbound blocks. Unfortunately, this waits for the other side to send back an EOF (a full round trip). That's terrible.

Unfortunately, there isn't a good solution. The obvious one is to fire off a goroutine to wait for the EOF (we need to wait somewhere) but that's going to suck in terms of memory usage. However, that may be the only reasonable short-term solution.

I'm going to see if I can find a way for the swarm to handle this for us in a constant number of go routines (I may also just create a temporary external "service" until we can figure out the interfaces).

Note: this is causing interop problems with js-ipfs as it doesn't appear to be closing streams in bitswap. See: ipfs/interop#28.
@Stebalien Stebalien added topic/interop Interoperability topic/perf Performance labels Jul 17, 2018
@magik6k magik6k mentioned this issue Jul 18, 2018
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@Stebalien Stebalien mentioned this issue Jul 18, 2018
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Stebalien added a commit that referenced this issue Jul 18, 2018
@Stebalien
when sending blocks in bitswap, close streams asynchronously
3e30658 
Otherwise, we tie up the bitswap worker until the other side responds with an EOF.

fixes #5247
related to libp2p/go-libp2p-net#28

License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>
@Stebalien Stebalien mentioned this issue Jul 18, 2018
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@ghost ghost assigned Stebalien Jul 18, 2018
@ghost ghost added the status/in-progress In progress label Jul 18, 2018
@ghost ghost removed the status/in-progress In progress label Jul 18, 2018
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when sending blocks in bitswap, close streams asynchronously ipfs/kubo
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