agents

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When the default request to /get-messages receives a 40x response, the useAgentChat hook crashes the app. This can be common in the case where the user wants to implement authentication as shown in the readme for hono-agents:

// or with authentication
app.use(
  "*",
  agentsMiddleware({
    options: {
      // onBeforeConnect: async (req) => { // original
      onBeforeRequest: async (req) => { // modified
        const token = req.headers.get("authorization");
        // validate token
        if (!token) return new Response("Unauthorized", { status: 401 });
      },
    },
  })
);

This is for the case where we want to gate not only the socket interactions but also the request for the messages.

Created a example reproduction repo, where it just rejects all requests to the agent. Here is the diff from the template: https://github.com/nickfujita/agent-issue-error-handling/commit/5bc6deb6ed981ea29f04ba62fa564881c1ecd0fd

Opened a PR to fix this with error handling, so it's up to the user what to do in the case of an auth failure: https://github.com/cloudflare/agents/pull/180