fix: solana program close (stop or stuck surfpool) #457
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
#Fixes 454 : where solana program close causes Surfpool to stop producing blocks with error -32002: receiving on an empty and disconnected channel.
When process_transaction() returned an error during preprocessing (account fetching, ALT resolution, etc.), the status_tx channel was dropped without sending any response. This caused the RPC handler's recv() to return RecvError, stopping block production.
before :

Modified process_transaction() in locker.rs to always send a VerificationFailure event through the status channel before returning errors
after :
