Name

gun:options - Query the capabilities of the server or a resource

Description

options(ConnPid, Path)
    -> options(ConnPid, Path, [], #{}).

options(ConnPid, Path, Headers)
    -> options(ConnPid, Path, Headers, #{})

options(ConnPid, Path, Headers, ReqOpts)
    -> StreamRef

ConnPid   :: pid()
Path      :: iodata()
Headers   :: gun:req_headers()
ReqOpts   :: gun:req_opts()
StreamRef :: gun:stream_ref()

Query the capabilities of the server or a resource.

The special path "*" can be used to obtain information about the server as a whole. Any other path will return information about that resource specifically.

Arguments

ConnPid: The pid of the Gun connection process.
Path: Path to the resource.
Headers: Additional request headers.
ReqOpts: Request options.

Return value

A reference that identifies the newly created stream is returned. It is this reference that must be passed in subsequent calls and will be received in messages related to this new stream.

Changelog

1.0: Function introduced.

Examples

Query the capabilities of the server

StreamRef = gun:options(ConnPid, "*").

Query the capabilities of a resource

StreamRef = gun:options(ConnPid, "/articles").