2.3.3 • Public • Published


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    Makes a request to a service, using consul for discovery and lookup.


    $ npm install seal-request-service

    Quick start

    First you need to add a reference to seal-request-service within your application.

    var requestService = require('seal-request-service');

    Please note: A connection to consul must already exist before you can use the module.

    To create a HTTP/HTTPS request to an instance of a service use:

    requestService({ service: 'myService' }, (err, req) => {
      if (!err) {
        throw new Error('An error occurred while connecting to the service.');
      req.on('connect', () => {
        console.log('Connected to service!');
      req.write('Hello service!');

    The first parameter is an options object that can contain the following properties:

    property type description
    service required string Name of the service to access
    headers optional object Additional HTTP/HTTPS headers
    method optional string HTTP/HTTPS method, default POST
    path optional string URL-path to access, default /

    Here is an example of a more complete options object:

    var options = {
      headers: {
        'content-type': 'application/json'
      method: 'POST',
      path: '/job',
      service: 'myService'

    The callback function given as the second parameter will be called when a connection to a instance of the service could be established. In this case, the err parameter is null and the req parameter contains a http.ClientRequest object for further use. Otherwise, the err parameter contains an Error object with further details about the problem.

    HTTP and HTTPS

    The protocol used for a connection depends on the target (the service resides in the local or a remote host) and the value of the environment variable TLS_UNPROTECTED. The TLS certificates provided by seal-tlscert will be used for HTTPS connections. It is not possible to override the chosen protocol.

    Used protocol:

    TLS_UNPROTECTED local service remote service
    'world' HTTP HTTP
    'loopback' HTTP HTTPS
    'none' HTTPS HTTPS

    Running the build

    To build this module use roboter.

    $ bot




    npm i seal-request-service

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    • manni19682
    • stefanscherer