sails-hook-sockets/lib/parse-sdk-metadata.js

Implements socket.io support in Sails

/**
 * Accept the socket handshake, and use the querystring to infer the
 * SDK platform, version, and programming language.
 *
 * @param  {Object} handshake
 * @return {Object}
 */

module.exports = function parseSdkMetadata(handshake) {
  var SDK_META_PARAMS = {
    version: '__sails_io_sdk_version',
    platform: '__sails_io_sdk_platform',
    language: '__sails_io_sdk_language'
  };

  // If metadata about the SDK version of the connecting client was not
  // provided in the version string, assume version = 0.9
  // (prior to 0.10, there wasn't any SDK versioning)
  if (!(handshake.headers[SDK_META_PARAMS.version] || handshake.query[SDK_META_PARAMS.version])) {
    handshake.query[SDK_META_PARAMS.version] = '0.9.0';
  }

  return {
    version: handshake.headers[SDK_META_PARAMS.version] || handshake.query[SDK_META_PARAMS.version],
    platform: handshake.headers[SDK_META_PARAMS.platform] || handshake.query[SDK_META_PARAMS.platform],
    language: handshake.headers[SDK_META_PARAMS.language] || handshake.query[SDK_META_PARAMS.language]
  };
};