Function parseHttpResponse

javascript/selenium-webdriver/lib/http.js:506–548

* Callback used to parse Response objects from a * HttpClient. * * @param {!cmd.Command} command The command the response is for. * @param {!Response} httpResponse The HTTP response to parse. * @return {{isW3C: boolean, value: ?}} An object describing the parsed * response.

(command, httpResponse)

 * @throws {WebDriverError} If the HTTP response is an error.
 */
function parseHttpResponse(command, httpResponse) {
  if (httpResponse.status < 200) {
    // This should never happen, but throw the raw response so users report it.
    throw new error.WebDriverError(`Unexpected HTTP response:\n${httpResponse}`)
  }

  let parsed = tryParse(httpResponse.body)

  if (parsed && typeof parsed === 'object') {
    let value = parsed.value
    let isW3C = isObject(value) && typeof parsed.status === 'undefined'

    if (!isW3C) {
      error.checkLegacyResponse(parsed)

      // Adjust legacy new session responses to look like W3C to simplify
      // later processing.
      if (command.getName() === cmd.Name.NEW_SESSION) {
        value = parsed
      }
    } else if (httpResponse.status > 399) {
      error.throwDecodedError(value)
    }

    return { isW3C, value }
  }

  if (parsed !== undefined) {
    return { isW3C: false, value: parsed }
  }

  let value = httpResponse.body.replace(/\r\n/g, '\n')

  // 404 represents an unknown command; anything else > 399 is a generic unknown
  // error.
  if (httpResponse.status === 404) {
    throw new error.UnsupportedOperationError(command.getName() + ': ' + value)
  } else if (httpResponse.status >= 400) {
    throw new error.WebDriverError(value)
  }

  return { isW3C: false, value: value || null }
}

/**
 * Builds a fully qualified path using the given set of command parameters. Each