77 lines
2.6 KiB
JavaScript
77 lines
2.6 KiB
JavaScript
/*
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* Copyright 2025 Google LLC.
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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import debug from 'debug';
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const debugInternal = debug('bidi:server:pipeTranspot');
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export class PipeTransport {
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#pipeWrite;
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#onMessage = null;
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#pendingMessage = '';
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constructor(pipeWrite, pipeRead) {
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this.#pipeWrite = pipeWrite;
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pipeRead.on('data', (chunk) => {
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return this.#dispatch(chunk);
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});
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pipeRead.on('close', () => {
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this.close();
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});
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pipeRead.on('error', (error) => {
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debugInternal('Pipe read error: ', error);
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this.close();
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});
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pipeWrite.on('error', (error) => {
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debugInternal('Pipe read error: ', error);
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this.close();
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});
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}
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setOnMessage(onMessage) {
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this.#onMessage = onMessage;
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}
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sendMessage(message) {
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// TODO: WebSocketServer keeps sending messages after closing the transport.
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// TODO: we should assert that the pipe was not closed.
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this.#pipeWrite.write(message);
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this.#pipeWrite.write('\0');
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}
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#dispatch(buffer) {
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// TODO: WebSocketServer keeps sending messages after closing the transport.
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// TODO: we should assert that the pipe was not closed.
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let end = buffer.indexOf('\0');
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if (end === -1) {
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this.#pendingMessage += buffer.toString();
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return;
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}
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const message = this.#pendingMessage + buffer.toString(undefined, 0, end);
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if (this.#onMessage) {
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this.#onMessage.call(null, message);
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}
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let start = end + 1;
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end = buffer.indexOf('\0', start);
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while (end !== -1) {
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if (this.#onMessage) {
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this.#onMessage.call(null, buffer.toString(undefined, start, end));
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}
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start = end + 1;
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end = buffer.indexOf('\0', start);
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}
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this.#pendingMessage = buffer.toString(undefined, start);
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}
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close() {
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debugInternal('Closing pipe');
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}
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}
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//# sourceMappingURL=PipeTransport.js.map
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