Here we add special handling for sending an error response when the write timeout of the
HTTP server is just about to expire. This is surprisingly difficult to get right, since is
must be ensured that all output is fully flushed in time, which needs support from
multiple levels of the RPC handler stack:
The timeout response can't use chunked transfer-encoding because there is no way to write
the final terminating chunk. net/http writes it when the topmost handler returns, but the
timeout will already be over by the time that happens. We decided to disable chunked
encoding by setting content-length explicitly.
Gzip compression must also be disabled for timeout responses because we don't know the
true content-length before compressing all output, i.e. compression would reintroduce
chunked transfer-encoding.
This changes the error code returned by the RPC server in certain situations:
- handler panic: code -32603
- result marshaling error: code -32603
- attempt to subscribe via HTTP: code -32001
In all of the above cases, the server previously returned the default error
code -32000.
Co-authored-by: Nicholas Zhao <nicholas.zhao@gmail.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
* all: work for eth1/2 transtition
* consensus/beacon, eth: change beacon difficulty to 0
* eth: updates
* all: add terminalBlockDifficulty config, fix rebasing issues
* eth: implemented merge interop spec
* internal/ethapi: update to v1.0.0.alpha.2
This commit updates the code to the new spec, moving payloadId into
it's own object. It also fixes an issue with finalizing an empty blockhash.
It also properly sets the basefee
* all: sync polishes, other fixes + refactors
* core, eth: correct semantics for LeavePoW, EnterPoS
* core: fixed rebasing artifacts
* core: light: performance improvements
* core: use keyed field (f)
* core: eth: fix compilation issues + tests
* eth/catalyst: dbetter error codes
* all: move Merger to consensus/, remove reliance on it in bc
* all: renamed EnterPoS and LeavePoW to ReachTDD and FinalizePoS
* core: make mergelogs a function
* core: use InsertChain instead of InsertBlock
* les: drop merger from lightchain object
* consensus: add merger
* core: recoverAncestors in catalyst mode
* core: fix nitpick
* all: removed merger from beacon, use TTD, nitpicks
* consensus: eth: add docstring, removed unnecessary code duplication
* consensus/beacon: better comment
* all: easy to fix nitpicks by karalabe
* consensus/beacon: verify known headers to be sure
* core: comments
* core: eth: don't drop peers who advertise blocks, nitpicks
* core: never add beacon blocks to the future queue
* core: fixed nitpicks
* consensus/beacon: simplify IsTTDReached check
* consensus/beacon: correct IsTTDReached check
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
The new error type is returned by client operations contains details of
the response error code and response body.
Co-authored-by: Felix Lange <fjl@twurst.com>
* internal/ethapi: return revert reason for eth_call
* internal/ethapi: moved revert reason logic to doCall
* accounts/abi/bind/backends: added revert reason logic to simulated backend
* internal/ethapi: fixed linting error
* internal/ethapi: check if require reason can be unpacked
* internal/ethapi: better error logic
* internal/ethapi: simplify logic
* internal/ethapi: return vmError()
* internal/ethapi: move handling of revert out of docall
* graphql: removed revert logic until spec change
* rpc: internal/ethapi: added custom error types
* graphql: use returndata instead of return
Return() checks if there is an error. If an error is found, we return nil.
For most use cases it can be beneficial to return the output even if there
was an error. This code should be changed anyway once the spec supports
error reasons in graphql responses
* accounts/abi/bind/backends: added tests for revert reason
* internal/ethapi: add errorCode to revert error
* internal/ethapi: add errorCode of 3 to revertError
* internal/ethapi: unified estimateGasErrors, simplified logic
* internal/ethapi: unified handling of errors in DoEstimateGas
* rpc: print error data field
* accounts/abi/bind/backends: unify simulatedBackend and RPC
* internal/ethapi: added binary data to revertError data
* internal/ethapi: refactored unpacking logic into newRevertError
* accounts/abi/bind/backends: fix EstimateGas
* accounts, console, internal, rpc: minor error interface cleanups
* Revert "accounts, console, internal, rpc: minor error interface cleanups"
This reverts commit 2d3ef53c5304e429a04983210a417c1f4e0dafb7.
* re-apply the good parts of 2d3ef53c53
* rpc: add test for returning server error data from client
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
New APIs added:
client.RegisterName(namespace, service) // makes service available to server
client.Notify(ctx, method, args...) // sends a notification
ClientFromContext(ctx) // to get a client in handler method
This is essentially a rewrite of the server-side code. JSON-RPC
processing code is now the same on both server and client side. Many
minor issues were fixed in the process and there is a new test suite for
JSON-RPC spec compliance (and non-compliance in some cases).
List of behavior changes:
- Method handlers are now called with a per-request context instead of a
per-connection context. The context is canceled right after the method
returns.
- Subscription error channels are always closed when the connection
ends. There is no need to also wait on the Notifier's Closed channel
to detect whether the subscription has ended.
- Client now omits "params" instead of sending "params": null when there
are no arguments to a call. The previous behavior was not compliant
with the spec. The server still accepts "params": null.
- Floating point numbers are allowed as "id". The spec doesn't allow
them, but we handle request "id" as json.RawMessage and guarantee that
the same number will be sent back.
- Logging is improved significantly. There is now a message at DEBUG
level for each RPC call served.
