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/**
* Copyright 2020 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {Protocol} from 'devtools-protocol';
import {
HTTPResponse as BaseHTTPResponse,
RemoteAddress,
} from '../api/HTTPResponse.js';
import {createDeferredPromise} from '../util/DeferredPromise.js';
import {CDPSession} from './Connection.js';
import {ProtocolError} from './Errors.js';
import {Frame} from './Frame.js';
import {HTTPRequest} from './HTTPRequest.js';
import {SecurityDetails} from './SecurityDetails.js';
/**
* @internal
*/
export class HTTPResponse extends BaseHTTPResponse {
#client: CDPSession;
#request: HTTPRequest;
#contentPromise: Promise<Buffer> | null = null;
#bodyLoadedPromise = createDeferredPromise<Error | void>();
#remoteAddress: RemoteAddress;
#status: number;
#statusText: string;
#url: string;
#fromDiskCache: boolean;
#fromServiceWorker: boolean;
#headers: Record<string, string> = {};
#securityDetails: SecurityDetails | null;
#timing: Protocol.Network.ResourceTiming | null;
constructor(
client: CDPSession,
request: HTTPRequest,
responsePayload: Protocol.Network.Response,
extraInfo: Protocol.Network.ResponseReceivedExtraInfoEvent | null
) {
super();
this.#client = client;
this.#request = request;
this.#remoteAddress = {
ip: responsePayload.remoteIPAddress,
port: responsePayload.remotePort,
};
this.#statusText =
this.#parseStatusTextFromExtrInfo(extraInfo) ||
responsePayload.statusText;
this.#url = request.url();
this.#fromDiskCache = !!responsePayload.fromDiskCache;
this.#fromServiceWorker = !!responsePayload.fromServiceWorker;
this.#status = extraInfo ? extraInfo.statusCode : responsePayload.status;
const headers = extraInfo ? extraInfo.headers : responsePayload.headers;
for (const [key, value] of Object.entries(headers)) {
this.#headers[key.toLowerCase()] = value;
}
this.#securityDetails = responsePayload.securityDetails
? new SecurityDetails(responsePayload.securityDetails)
: null;
this.#timing = responsePayload.timing || null;
}
#parseStatusTextFromExtrInfo(
extraInfo: Protocol.Network.ResponseReceivedExtraInfoEvent | null
): string | undefined {
if (!extraInfo || !extraInfo.headersText) {
return;
}
const firstLine = extraInfo.headersText.split('\r', 1)[0];
if (!firstLine) {
return;
}
const match = firstLine.match(/[^ ]* [^ ]* (.*)/);
if (!match) {
return;
}
const statusText = match[1];
if (!statusText) {
return;
}
return statusText;
}
override _resolveBody(err: Error | null): void {
if (err) {
return this.#bodyLoadedPromise.resolve(err);
}
return this.#bodyLoadedPromise.resolve();
}
override remoteAddress(): RemoteAddress {
return this.#remoteAddress;
}
override url(): string {
return this.#url;
}
override ok(): boolean {
// TODO: document === 0 case?
return this.#status === 0 || (this.#status >= 200 && this.#status <= 299);
}
override status(): number {
return this.#status;
}
override statusText(): string {
return this.#statusText;
}
override headers(): Record<string, string> {
return this.#headers;
}
override securityDetails(): SecurityDetails | null {
return this.#securityDetails;
}
override timing(): Protocol.Network.ResourceTiming | null {
return this.#timing;
}
override buffer(): Promise<Buffer> {
if (!this.#contentPromise) {
this.#contentPromise = this.#bodyLoadedPromise.then(async error => {
if (error) {
throw error;
}
try {
const response = await this.#client.send('Network.getResponseBody', {
requestId: this.#request._requestId,
});
return Buffer.from(
response.body,
response.base64Encoded ? 'base64' : 'utf8'
);
} catch (error) {
if (
error instanceof ProtocolError &&
error.originalMessage === 'No resource with given identifier found'
) {
throw new ProtocolError(
'Could not load body for this request. This might happen if the request is a preflight request.'
);
}
throw error;
}
});
}
return this.#contentPromise;
}
override request(): HTTPRequest {
return this.#request;
}
override fromCache(): boolean {
return this.#fromDiskCache || this.#request._fromMemoryCache;
}
override fromServiceWorker(): boolean {
return this.#fromServiceWorker;
}
override frame(): Frame | null {
return this.#request.frame();
}
}
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