@modelcontextprotocol/sdk
Version:
Model Context Protocol implementation for TypeScript
51 lines • 1.87 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.InMemoryTransport = void 0;
/**
* In-memory transport for creating clients and servers that talk to each other within the same process.
*/
class InMemoryTransport {
constructor() {
this._messageQueue = [];
}
/**
* Creates a pair of linked in-memory transports that can communicate with each other. One should be passed to a Client and one to a Server.
*/
static createLinkedPair() {
const clientTransport = new InMemoryTransport();
const serverTransport = new InMemoryTransport();
clientTransport._otherTransport = serverTransport;
serverTransport._otherTransport = clientTransport;
return [clientTransport, serverTransport];
}
async start() {
// Process any messages that were queued before start was called
while (this._messageQueue.length > 0) {
const queuedMessage = this._messageQueue.shift();
this.onmessage?.(queuedMessage.message, queuedMessage.extra);
}
}
async close() {
const other = this._otherTransport;
this._otherTransport = undefined;
await other?.close();
this.onclose?.();
}
/**
* Sends a message with optional auth info.
* This is useful for testing authentication scenarios.
*/
async send(message, options) {
if (!this._otherTransport) {
throw new Error('Not connected');
}
if (this._otherTransport.onmessage) {
this._otherTransport.onmessage(message, { authInfo: options?.authInfo });
}
else {
this._otherTransport._messageQueue.push({ message, extra: { authInfo: options?.authInfo } });
}
}
}
exports.InMemoryTransport = InMemoryTransport;
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