This adds a couple of metrics for tracking the timing
and frequency of method calls:
- rpc/requests gauge counts all requests
- rpc/success gauge counts requests which return err == nil
- rpc/failure gauge counts requests which return err != nil
- rpc/duration/all timer tracks timing of all requests
- rpc/duration/<method>/<success/failure> tracks per-method timing
This just prevents a false negative ERROR warning when, for some unknown
reason, a user attempts to turn on the module rpc even though it's already going
to be on.
This removes the error added in #20597 in favor of a log message at
error level. Failing to start broke a bunch of people's setups and is
probably not the right thing to do for this check.
This change makes the client attempt to reconnect when a write fails.
We already had reconnect support, but the reconnect would previously
happen on the next call after an error. Being more eager leads to a
smoother experience overall.
This commit intents to replicate the DialHTTPWithClient function which allows
creating a RPC Client using a custom dialer but for websockets.
We introduce a new DialWebsocketWithDialer function which allows the caller
to instantiate a new websocket client using a custom dialer.
* rpc: remove 'exported or builtin' restriction for parameters
There is no technial reason for this restriction because package reflect
can create values of any type. Requiring parameters and return values to
be exported causes a lot of noise in package exports.
* rpc: fix staticcheck warnings
* rpc: improve codec abstraction
rpc.ServerCodec is an opaque interface. There was only one way to get a
codec using existing APIs: rpc.NewJSONCodec. This change exports
newCodec (as NewFuncCodec) and NewJSONCodec (as NewCodec). It also makes
all codec methods non-public to avoid showing internals in godoc.
While here, remove codec options in tests because they are not
supported anymore.
* p2p/simulations: use github.com/gorilla/websocket
This package was the last remaining user of golang.org/x/net/websocket.
Migrating to the new library wasn't straightforward because it is no
longer possible to treat WebSocket connections as a net.Conn.
* vendor: delete golang.org/x/net/websocket
* rpc: fix godoc comments and run gofmt
This change adds support for gzip encoding on HTTP responses.
Gzip encoding is used when the client sets the 'accept-encoding: gzip' header.
Original change by @brianosaurus, with fixes from @SjonHortensius.
* rpc: implement websockets with github.com/gorilla/websocket
This change makes package rpc use the github.com/gorilla/websocket
package for WebSockets instead of golang.org/x/net/websocket. The new
library is more robust and supports all WebSocket features including
continuation frames.
There are new tests for two issues with the previously-used library:
- TestWebsocketClientPing checks handling of Ping frames.
- TestWebsocketLargeCall checks whether the request size limit is
applied correctly.
* rpc: raise HTTP/WebSocket request size limit to 5MB
* rpc: remove default origin for client connections
The client used to put the local hostname into the Origin header because
the server wanted an origin to accept the connection, but that's silly:
Origin is for browsers/websites. The nobody would whitelist a particular
hostname.
Now that the server doesn't need Origin anymore, don't bother setting
one for clients. Users who need an origin can use DialWebsocket to
create a client with arbitrary origin if needed.
* vendor: put golang.org/x/net/websocket back
* rpc: don't set Origin header for empty (default) origin
* rpc: add HTTP status code to handshake error
This makes it easier to debug failing connections.
* ethstats: use github.com/gorilla/websocket
* rpc: fix lint
This PR updates a comment about the maximum client subscription buffer
to reflect changes made previously, and fixes a test that wouldn't fail
when wantError == true but execution did not return an error.
When cancelling the context for a call on a HTTP-based client while the
call is running, the select in requestOp.wait may hit the <-context.Done()
case instead of the <-op.resp case. This doesn't happen often -- our
cancel test hasn't caught this even though it ran thousands of times
on CI since the RPC client was added.
Fixes#19714
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.
* Initial work on a graphql API
* Added receipts, and more transaction fields.
* Finish receipts, add logs
* Add transactionCount to block
* Add types and .
* Update Block type to be compatible with ethql
* Rename nonce to transactionCount in Account, to be compatible with ethql
* Update transaction, receipt and log to match ethql
* Add query operator, for a range of blocks
* Added ommerCount to Block
* Add transactionAt and ommerAt to Block
* Added sendRawTransaction mutation
* Add Call and EstimateGas to graphQL API
* Refactored to use hexutil.Bytes instead of HexBytes
* Replace BigNum with hexutil.Big
* Refactor call and estimateGas to use ethapi struct type
* Replace ethgraphql.Address with common.Address
* Replace ethgraphql.Hash with common.Hash
* Converted most quantities to Long instead of Int
* Add support for logs
* Fix bug in runFilter
* Restructured Transaction to work primarily with headers, so uncle data is reported properly
* Add gasPrice API
* Add protocolVersion API
* Add syncing API
* Moved schema into its own source file
* Move some single use args types into anonymous structs
* Add doc-comments
* Fixed backend fetching to use context
* Added (very) basic tests
* Add documentation to the graphql schema
* Fix reversion for formatting of big numbers
* Correct spelling error
* s/BigInt/Long/
* Update common/types.go
* Fixes in response to review
* Fix lint error
* Updated calls on private functions
* Fix typo in graphql.go
* Rollback ethapi breaking changes for graphql support
Co-Authored-By: Arachnid <arachnid@notdot.net>
Notifier tracks whether subscription are 'active'. A subscription
becomes active when the subscription ID has been sent to the client. If
the client sends notifications in the request handler before the
subscription becomes active they are dropped. The tests tried to work
around this problem by always waiting 5s before sending the first
notification.
Fix it by buffering notifications until the subscription becomes active.
This speeds up all subscription tests.
Also fix TestSubscriptionMultipleNamespaces to wait for three messages
per subscription instead of six. The test now finishes just after all
notifications have been received and doesn't hit the 30s timeout anymore.
* signer: remove local path disclosure from extapi
* signer: show more data in cli ui
* rpc: make http server forward UA and Origin via Context
* signer, clef/core: ui changes + display UA and Origin
* signer: cliui - indicate less trust in remote headers, see https://github.com/ethereum/go-ethereum/issues/17637
* signer: prevent possibility swap KV-entries in aes_gcm storage, fixes#17635
* signer: remove ecrecover from external API
* signer,clef: default reject instead of warn + valideate new passwords. fixes#17632 and #17631
* signer: check calldata length even if no ABI signature is present
* signer: fix failing testcase
* clef: remove account import from external api
* signer: allow space in passwords, improve error messsage
* signer/storage: fix typos
* rpc: Make HTTP server timeout values configurable
* rpc: Remove flags for setting HTTP Timeouts, configuring via .toml is sufficient.
* rpc: Replace separate constants with a single default struct.
* rpc: Update HTTP Server Read and Write Timeouts to 30s.
* rpc: Remove redundant NewDefaultHTTPTimeouts function.
* rpc: document HTTPTimeouts.
* rpc: sanitize timeout values for library use
