protocol

The protocol module can register a new protocol or intercept an existing protocol, so you can customize the response to the requests for various protocols.

An example of implementing a protocol that has the same effect with the file:// protocol:

var app = require('app'),
    path = require('path');

app.on('ready', function() {
    var protocol = require('protocol');
    protocol.registerProtocol('atom', function(request) {
      var url = request.url.substr(7)
      return new protocol.RequestFileJob(path.normalize(__dirname + '/' + url));
    });
});

Note: This module can only be used after the ready event was emitted.

protocol.registerProtocol(scheme, handler)

scheme String
handler Function

Registers a custom protocol of scheme, the handler would be called with handler(request) when the a request with registered scheme is made.

You need to return a request job in the handler to specify which type of response you would like to send.

protocol.unregisterProtocol(scheme)

scheme String

Unregisters the custom protocol of scheme.

protocol.isHandledProtocol(scheme)

scheme String

Returns whether the scheme can be handled already.

protocol.interceptProtocol(scheme, handler)

scheme String
handler Function

Intercepts an existing protocol with scheme, returning null or undefined in handler would use the original protocol handler to handle the request.

protocol.uninterceptProtocol(scheme)

scheme String

Unintercepts a protocol.

Class: protocol.RequestFileJob(path)

path String

Create a request job which would query a file of path and set corresponding mime types.

Class: protocol.RequestStringJob(options)

options Object
- mimeType String - Default is text/plain
- charset String - Default is UTF-8
- data String

Create a request job which sends a string as response.

Class: protocol.RequestBufferJob(options)

options Object
- mimeType String - Default is application/octet-stream
- encoding String - Default is UTF-8
- data Buffer

Create a request job which sends a buffer as response.

Class: protocol.RequestErrorJob(code)

code Integer

Create a request job which sets appropriate network error message to console. Code should be in the following range.

Ranges:
- 0- 99 System related errors
- 100-199 Connection related errors
- 200-299 Certificate errors
- 300-399 HTTP errors
- 400-499 Cache errors
- 500-599 ?
- 600-699 FTP errors
- 700-799 Certificate manager errors
- 800-899 DNS resolver errors

Check the network error list for code and message relations.

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