cli.js•4.48 kB
import EventSource from "eventsource";
import WebSocket from "ws";
// eslint-disable-next-line @typescript-eslint/no-explicit-any
global.EventSource = EventSource;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
global.WebSocket = WebSocket;
import express from "express";
import { Client } from "./client/index.js";
import { SSEClientTransport } from "./client/sse.js";
import { StdioClientTransport } from "./client/stdio.js";
import { WebSocketClientTransport } from "./client/websocket.js";
import { Server } from "./server/index.js";
import { SSEServerTransport } from "./server/sse.js";
import { StdioServerTransport } from "./server/stdio.js";
import { ListResourcesResultSchema } from "./types.js";
async function runClient(url_or_command, args) {
const client = new Client({
name: "mcp-typescript test client",
version: "0.1.0",
}, {
capabilities: {
sampling: {},
},
});
let clientTransport;
let url = undefined;
try {
url = new URL(url_or_command);
}
catch (_a) {
// Ignore
}
if ((url === null || url === void 0 ? void 0 : url.protocol) === "http:" || (url === null || url === void 0 ? void 0 : url.protocol) === "https:") {
clientTransport = new SSEClientTransport(new URL(url_or_command));
}
else if ((url === null || url === void 0 ? void 0 : url.protocol) === "ws:" || (url === null || url === void 0 ? void 0 : url.protocol) === "wss:") {
clientTransport = new WebSocketClientTransport(new URL(url_or_command));
}
else {
clientTransport = new StdioClientTransport({
command: url_or_command,
args,
});
}
console.log("Connected to server.");
await client.connect(clientTransport);
console.log("Initialized.");
await client.request({ method: "resources/list" }, ListResourcesResultSchema);
await client.close();
console.log("Closed.");
}
async function runServer(port) {
if (port !== null) {
const app = express();
let servers = [];
app.get("/sse", async (req, res) => {
console.log("Got new SSE connection");
const transport = new SSEServerTransport("/message", res);
const server = new Server({
name: "mcp-typescript test server",
version: "0.1.0",
}, {
capabilities: {},
});
servers.push(server);
server.onclose = () => {
console.log("SSE connection closed");
servers = servers.filter((s) => s !== server);
};
await server.connect(transport);
});
app.post("/message", async (req, res) => {
console.log("Received message");
const sessionId = req.query.sessionId;
const transport = servers
.map((s) => s.transport)
.find((t) => t.sessionId === sessionId);
if (!transport) {
res.status(404).send("Session not found");
return;
}
await transport.handlePostMessage(req, res);
});
app.listen(port, () => {
console.log(`Server running on http://localhost:${port}/sse`);
});
}
else {
const server = new Server({
name: "mcp-typescript test server",
version: "0.1.0",
}, {
capabilities: {
prompts: {},
resources: {},
tools: {},
logging: {},
},
});
const transport = new StdioServerTransport();
await server.connect(transport);
console.log("Server running on stdio");
}
}
const args = process.argv.slice(2);
const command = args[0];
switch (command) {
case "client":
if (args.length < 2) {
console.error("Usage: client <server_url_or_command> [args...]");
process.exit(1);
}
runClient(args[1], args.slice(2)).catch((error) => {
console.error(error);
process.exit(1);
});
break;
case "server": {
const port = args[1] ? parseInt(args[1]) : null;
runServer(port).catch((error) => {
console.error(error);
process.exit(1);
});
break;
}
default:
console.error("Unrecognized command:", command);
}
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