Files
chatmail-core/deltachat-jsonrpc
holger krekel dced877c90 feat: perform background fetch from all transports
With I/O stopped, `background_fetch()` connected only to the transport of `configured_addr`
and we now instead fan out to all transports in a controlled loop.
If a first transport finished fetching new messages
cancel all other attempts and return.

This is meant to address the problem that amzd described
where a profile with one functioning and one hanging transport,
shows the first notification, then hangs 15 seconds waiting for the hanging transport.
meanwhile a second NSE arrives and dies, and the second message is not notified
or only generically.

Also drop the quota check from this background fetch path:
its result is in-memory only, discarded when the iOS notification service exits,
and the regular scheduler fetching refreshes it every 60s anyway.
Moreover, quota errors/running full is pretty rare
since relays generally automatically stay under quota these days.
It's another round trip for each transport of each profile and simply not necessary.

Also adds previously missing online tests.
2026-09-13 10:29:52 +02:00
..
2026-09-11 21:14:09 +00:00

deltachat-jsonrpc

This crate provides a JSON-RPC 2.0 interface to DeltaChat.

The JSON-RPC API is exposed in two fashions:

  • A executable deltachat-rpc-server that exposes the JSON-RPC API through stdio.
  • The JSON-RPC API can also be called through the C FFI. It exposes the functions dc_jsonrpc_init, dc_jsonrpc_request, dc_jsonrpc_next_response and dc_jsonrpc_unref. See the docs in the header file for details.

We also include a JavaScript and TypeScript client for the JSON-RPC API. The source for this is in the typescript folder.

Usage

Using the TypeScript/JavaScript client

The package includes a JavaScript/TypeScript client which is partially auto-generated through the JSON-RPC library used by this crate (yerpc). Find the source in the typescript folder.

To use it locally, first install the dependencies and compile the TypeScript code to JavaScript:

cd typescript
npm install
npm run build

The JavaScript client is published on NPM.

A script is included to build autogenerated documentation, which includes all RPC methods:

cd typescript
npm run docs

Then open the typescript/docs folder in a web browser.

Development

Running the example app

Testing

The crate includes both a basic Rust smoke test and more featureful integration tests that use the TypeScript client.

Rust tests

To run the Rust test, use this command:

cargo test

TypeScript tests

cd typescript
npm run test

This will build the deltachat-jsonrpc-server binary and then run a test suite.

The test suite includes some tests that need online connectivity and a way to create test email accounts. To run these tests, set the CHATMAIL_DOMAIN environment variable to your testing email server domain.

CHATMAIL_DOMAIN=ci-chatmail.testrun.org npm run test

Test Coverage

Running npm run test will report test coverage. For the coverage to be accurate the online tests need to be run.

If you are offline and want to see the coverage results anyway (even though they are inaccurate), you can bypass the errors of the online tests by setting the COVERAGE_OFFLINE=1 environment variable.

A summary of the coverage will be reported in the terminal after the test run. Open coverage/index.html in a web browser for a detailed report.