54 lines
1.8 KiB
Plaintext
54 lines
1.8 KiB
Plaintext
import { JSONRPCMessageSchema } from '../types.js';
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const SUBPROTOCOL = 'mcp';
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/**
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* Client transport for WebSocket: this will connect to a server over the WebSocket protocol.
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*/
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export class WebSocketClientTransport {
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constructor(url) {
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this._url = url;
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}
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start() {
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if (this._socket) {
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throw new Error('WebSocketClientTransport already started! If using Client class, note that connect() calls start() automatically.');
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}
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return new Promise((resolve, reject) => {
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this._socket = new WebSocket(this._url, SUBPROTOCOL);
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this._socket.onerror = event => {
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const error = 'error' in event ? event.error : new Error(`WebSocket error: ${JSON.stringify(event)}`);
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reject(error);
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this.onerror?.(error);
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};
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this._socket.onopen = () => {
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resolve();
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};
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this._socket.onclose = () => {
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this.onclose?.();
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};
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this._socket.onmessage = (event) => {
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let message;
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try {
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message = JSONRPCMessageSchema.parse(JSON.parse(event.data));
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}
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catch (error) {
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this.onerror?.(error);
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return;
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}
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this.onmessage?.(message);
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};
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});
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}
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async close() {
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this._socket?.close();
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}
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send(message) {
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return new Promise((resolve, reject) => {
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if (!this._socket) {
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reject(new Error('Not connected'));
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return;
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}
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this._socket?.send(JSON.stringify(message));
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resolve();
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});
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}
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}
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//# sourceMappingURL=websocket.js.map |