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Language Server HTTP Endpoints
language-server
language-server
protocol
specification
6

HTTP Endpoints

Language server exposes a number of HTTP endpoints on the same socket as the JSONRPC protocol.

/_health

HTTP endpoint that provides basic health checking capabilities.

GET | HEAD

Returns 200 OK when the server is started and 500 Internal Server Error otherwise.

Request

> GET /_health HTTP/1.1
> Host: localhost:63597
> User-Agent: curl/7.77.0
> Accept: */*

Response

< HTTP/1.1 200 OK
< Server: akka-http/10.2.0-RC1
< Date: Fri, 09 Jul 2021 15:16:16 GMT
< Content-Type: text/plain; charset=UTF-8
< Content-Length: 2
<
OK

/_health/readiness

The server readiness probe.

GET | HEAD

Returns 200 OK when the server is initialized and 500 Internal Server Error otherwise.

Request

> GET /_health/readiness HTTP/1.1
> Host: localhost:63597
> User-Agent: curl/7.77.0
> Accept: */*

Response

< HTTP/1.1 200 OK
< Server: akka-http/10.2.0-RC1
< Date: Fri, 09 Jul 2021 15:30:53 GMT
< Content-Type: text/plain; charset=UTF-8
< Content-Length: 2
<
OK

/_health/liveness

The server liveness probe.

GET | HEAD

Checks if all the server subsystems are functioning and returns 200 OK or 500 Internal Server Error otherwise.

Request

> GET /_health/liveness HTTP/1.1
> Host: localhost:60339
> User-Agent: curl/7.77.0
> Accept: */*

Response

< HTTP/1.1 200 OK
< Server: akka-http/10.2.0-RC1
< Date: Fri, 09 Jul 2021 15:35:43 GMT
< Content-Type: text/plain; charset=UTF-8
< Content-Length: 2
<
OK

/_idle

The server idleness probe.

GET

Return the amount of time the language server is idle.

Request

> GET /_idle HTTP/1.1
> Host: localhost:60339
> User-Agent: curl/7.77.0
> Accept: */*

Response

< HTTP/1.1 200 OK
< Server: akka-http/10.2.0-RC1
< Date: Fri, 09 Jul 2021 15:44:51 GMT
< Content-Type: application/json
< Content-Length: 21
<
{"idle_time_sec":58}

/_idle/reset

The reset request of the server idleness probe.

POST

Reset the idle time of the language server.

Request

> POST /_idle/reset HTTP/1.1
> Host: localhost:64996
> User-Agent: curl/7.77.0
> Accept: */*

Response

< HTTP/1.1 200 OK
< Server: akka-http/10.2.0-RC1
< Date: Mon, 09 Aug 2021 15:37:27 GMT
< Content-Type: text/plain; charset=UTF-8
< Content-Length: 2
<
OK