Commit Graph

35 Commits

Author SHA1 Message Date
Delweng
d6cea4832a
rpc: improve performance of subscription notification encoding (#28328)
It turns out that encoding json.RawMessage is slow because
package json basically parses the message again to ensure it is valid.
We can avoid the slowdown by encoding the entire RPC notification once,
which yields a 30% speedup.
2023-11-22 11:24:54 +01:00
Håvard Anda Estensen
a75a2d6db6
all: replace some cases of strings.SplitN with strings.Cut (#28446) 2023-11-15 14:42:33 +01:00
Sina Mahmoodi
f20eba426a
graphql, node, rpc: improve HTTP write timeout handling (#25457)
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.
2022-12-07 14:02:14 +01:00
Nicholas
610cf02c4a
rpc: improve error codes for internal server errors (#25678)
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>
2022-09-09 14:03:23 +02:00
Seungbae Yu
38e002f464
rpc: check that "version" is "2.0" in request objects (#25570)
The JSON-RPC spec requires the "version" field to be exactly "2.0",
so we should verify that. This change is not backwards-compatible with
sloppy client implementations, but I decided to go ahead with it anyway
because the failure will be caught via the returned error.
2022-09-02 17:47:29 +02:00
Felix Lange
5bcbb2980b
rpc: add PeerInfo (#24255)
This replaces the sketchy and undocumented string context keys for HTTP requests
with a defined interface. Using string keys with context is discouraged because
they may clash with keys created by other packages.

We added these keys to make connection metadata available in the signer, so this
change also updates signer/core to use the new PeerInfo API.
2022-01-20 12:45:07 +01:00
Felix Lange
5883afb3ef
rpc: fix issue with null JSON-RPC messages (#21497) 2020-08-28 16:27:58 +02:00
Marius van der Wijden
0b3f3be2b5
internal/ethapi: return revert reason for eth_call (#21083)
* 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>
2020-06-08 11:09:49 +03:00
Felix Lange
8008c5b1fa rpc: remove 'exported or builtin' restriction for parameters (#20332)
* 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
2019-11-20 10:06:21 +02:00
Felix Lange
7c4a4eb58a rpc, p2p/simulations: use github.com/gorilla/websocket (#20289)
* 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
2019-11-18 10:40:59 +02:00
Felix Lange
04e175b8ec rpc: implement websockets with github.com/gorilla/websocket (#19866)
* 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
2019-07-22 13:22:39 +03:00
Felix Lange
245f3146c2
rpc: implement full bi-directional communication (#18471)
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.
2019-02-04 13:47:34 +01:00
Péter Szilágyi
99483e85b9
rpc: support returning nil pointer big.Ints (null) 2018-06-11 13:56:22 +03:00
Péter Szilágyi
555f42cfd8
rpc: enforce the 128KB request limits on websockets too 2018-03-13 13:55:26 +02:00
Bas van Kervel
37e3f561f1
rpc: support subscriptions under custom namespaces 2017-04-25 11:13:22 +02:00
Péter Szilágyi
d4fd06c3dc
all: blidly swap out glog to our log15, logs need rework 2017-02-23 12:16:44 +02:00
Felix Lange
35a7dcb162 all: gofmt -w -s 2017-01-06 15:52:03 +01:00
Felix Lange
cf71f5cd60 rpc: remove HexNumber, replace all uses with hexutil types
This change couldn't be automated because HexNumber was used for numbers
of all sizes.
2016-12-20 14:41:58 +01:00
Felix Lange
a3e3235d97 rpc: improve error messages for invalid arguments
The message now includes the index of the invalid arg.
2016-12-20 14:35:26 +01:00
Felix Lange
91b7690428 rpc: add new client, use it everywhere
The new client implementation supports concurrent requests,
subscriptions and replaces the various ad hoc RPC clients
throughout go-ethereum.
2016-07-22 23:21:27 +02:00
Felix Lange
bb01bea4e2 rpc: fix bad method error for batch requests
If a batch request contained an invalid method, the server would reply
with a non-batch error response. Fix this by tracking an error for each
batch element.
2016-07-22 23:21:27 +02:00
Péter Szilágyi
ffaf58f0a9 cmd, console: split off the console into a reusable package 2016-05-30 17:25:23 +03:00
Bas van Kervel
aa9fff3e68 rpc: various fixes/enhancements
rpc: be less restrictive on the request id
rpc: improved documentation
console: upgrade web3.js to version 0.16.0
rpc: cache http connections
rpc: rename wsDomains parameter to wsOrigins
2016-04-12 11:02:39 +02:00
Bas van Kervel
f7328c5ecb rpc: add pub/sub support 2016-04-01 18:26:35 +02:00
Péter Szilágyi
188ab928c3 cmd, common, node, rpc: move IPC into the node itself 2016-02-04 11:23:15 +02:00
Felix Lange
5728dd381d rpc: fix success response encoding for null return value
The "result" field of JSON-RPC 2.0 responses was omitted
if the result was nil, causing exceptions in web3.js.
2016-01-27 00:06:37 +01:00
Bas van Kervel
19b2640e89 rpc: migrated the RPC insterface to a new reflection based RPC layer 2016-01-26 13:51:50 +01:00
Taylor Gerring
89a48e365c Cleanup 2015-01-29 11:39:59 -06:00
Taylor Gerring
d790229a33 Move HTTP transport to sub package of RPC 2015-01-27 12:29:07 -06:00
Taylor Gerring
215780ab56 Move GetRequestReply to EthereumApi
Off of jsonWrapper
2015-01-20 13:58:51 -06:00
Taylor Gerring
a81d835e4d cleanup 2015-01-13 09:37:08 -06:00
Taylor Gerring
961e4da7d8 Add support for CodeAt 2015-01-13 09:27:36 -06:00
Taylor Gerring
b178414a47 Added license headers 2015-01-13 09:13:43 -06:00
Taylor Gerring
32bed50ba1 begin conversion to rpc over http
Per specification at
https://github.com/ethereum/wiki/wiki/Generic-JSON-RPC
2015-01-12 23:25:29 -06:00
obscuren
10b252dd05 WIP RPC interface 2014-10-21 13:24:48 +02:00