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path: root/Role/Downloader.hs
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* add license headers to all source filesJoey Hess2017-04-30
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* improveJoey Hess2017-04-30
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* fix probable race in use of restoreHashesJoey Hess2017-04-30
| | | | | | | | | | | | | I think there was a race where a SessionKey message had been drained from the TChan, but not yet added to the developer state, which was resonsible for recent instability at startup. It manifested as protocol errors where the prevActivity hash was wrongly Nothing. Fixed by adding a MissingHashes type to tag things whose hashes have been stripped, and adding back the hashes when needed, which always happens inside atomically blocks, so won't have such a race.
* dump developer state on protocol errorJoey Hess2017-04-30
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* reorder "Using gpg to sign the debug-me session key" message before session ↵Joey Hess2017-04-28
| | | | start
* Leave the prevMessage out of Activity serialization to save BW.Joey Hess2017-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do include it in the data that gets signed, so it can be recovered by trying each likely (recently seen) Activity as the prevMessage, and checking the signature. The UserState and DeveloperState already had the necessary state about recently seen hashes, so this does not impact data use. One tricky bit is that relayFromSocket needs to wait for the TMChan to be empty before calling restorePrevActivityHash. Otherwise, the hashes of items in the channel that have not been processed yet won't be tried. The TMChan is not really being used as a channel since only 1 item can be in it. It could be converted to a TMVar, but closeTMChan is used so I left it as a channel. Note that the server does not restore hashes of messages that pass through it; it's just a dumb relay. Sending a single key press now only needs 94 bytes of data to be sent, down from 169! --- Also switched to SHA512, since hashes are no longer being sent over the wire and so the larger size does not matter. SHA512 is slightly faster and more secure. This commit was sponsored by Ewen McNeill.
* rename LogMessage to AnyMessageJoey Hess2017-04-27
| | | | Not related to the Log anymore.
* include elapsedTime in ActivityJoey Hess2017-04-26
| | | | | | | | | | | | Time is relative, so the debug-me proof chain doesn't prove when things happened, but it's still useful to have some idea of how long things took to happen. This makes --replay work with logs gotten by --download. Log still includes loggedTimestamp. This is a bit redundant, and is unused now, but it's useful for log files to record when messages were received. This commit was sponsored by Riku Voipio.
* have server relay Devloper messages to other DevelopersJoey Hess2017-04-26
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* fix downloader and watcherJoey Hess2017-04-24
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* switch to TMChans so they can be closed when a connection is DoneJoey Hess2017-04-24
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* add framing protocol for websocketsJoey Hess2017-04-22
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* add --download modeJoey Hess2017-04-21
Nice, was able to reuse all the protocol stuff from Role.Developer for this. This commit was sponsored by Fernando Jimenez on Patreon.