URI

  1. <dataflow_uri>/broadcast[.<format>]

  2. ws://{ip}:{port}/iserver/services/{ServiceName}/dataflow/broadcast

Supported methods

GET, POST, HEAD

Parent resource

dataflow

Introduction

The broadcast resource is the entrance to data stream service which allows administrator to broadcast data to service users. Data in GeoJSON format can be accepted by broadcast resource.

Supported Methods:

  • GET: Gets the broadcast entrance of data stream.
  • POST: Broadcasts data to clients.
  • HEAD: Checks whether the broadcast resource exists or whether it has permission to access the resource.

Supported output formats:rjson, json, html, xml.

Resource hierarchy

HTTP request methods

Implement the HTTP request on the following URI, where supermapiserver is the server name, with rjson being the output format.

http://supermapiserver:8090/iserver/services/{ServiceName}/dataflow/broadcast.rjson

GET request

Gets the broadcast entrance of data stream.

POST request

 Broadcasts data to subscribers. Data is a Feature with time stamp.

HEAD request

Asks for the response identical to the one that would correspond to a GET request, but without the response body. This is useful for retrieving meta-information written in response headers, without having to transport the entire content. The meta-information includes the media-type, content-encoding, transfer-encoding, content-length, etc.

HEAD request can be used to check whether the broadcast resource exists, or whether the the client has the permission to access it. It can also determine if the broadcast resource supports an output format <format> if performed on a URI with .<format> included.

WebSocket Connection

Build a WebSocket connection, where supermapiserver is the server name

ws://supermapiserver:8091/iserver/services/{ServiceName}/dataflow/broadcast

Name Type Description
token String Authentication information in broadcast. SeeGET token

 

See