diegosouzapw/OmniRoute · error · Error

Invalid request URL

Error message

Invalid request URL

What it means

Guard in the inspector HTTP proxy's request handler: safeUrl(req.url, req.headers.host) returned null — the request line's URL plus the Host header could not be combined into a parseable absolute URL. Means the client sent a malformed request-target/Host combination (or garbage bytes parsed as a request), so no upstream target can be derived and the interception entry is failed. The inputs at fault are the raw req.url and req.headers.host.

Solutions

1. Log the raw req.url/Host pair to see what the client actually sent
2. Confirm the client speaks plain HTTP proxy semantics (or CONNECT for TLS)
3. Drop the connection — retrying the same malformed request will fail identically

When it happens

Trigger: Thrown at src/mitm/inspector/httpProxyServer.ts:116 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of diegosouzapw/OmniRoute@a179ffed5b (2026-08-25). Data as JSON: /api/errors/37129075fa231908. Report an issue: GitHub.

Appendix: source

Thrown at src/mitm/inspector/httpProxyServer.ts:116

    method: req.method ?? "GET",
    host: req.headers.host ?? "",
    path: req.url ?? "/",
    requestHeaders: sanitizeHeaders(req.headers),
    requestBody: null,
    requestSize: 0,
    responseHeaders: {},
    responseBody: null,
    responseSize: 0,
    status: "in-flight",
  };

  globalTrafficBuffer.push(intercepted);

  void (async () => {
    try {
      const target = safeUrl(req.url, req.headers.host);
      if (!target) {
        throw new Error("Invalid request URL");
      }
      intercepted.host = target.host;
      intercepted.path = target.pathname + target.search;

      const body = await readBody(req);
      intercepted.requestSize = body.length;
      intercepted.requestBody = body.length > 0 ? maskSecret(body.toString("utf8")) : null;

      const upstreamHeaders = buildFetchHeaders(req.headers);
      const upstream = await fetch(target.toString(), {
        method: req.method ?? "GET",
        headers: upstreamHeaders,
        body: body.length > 0 ? body : undefined,
        redirect: "manual",
      });

      const respBuf = Buffer.from(await upstream.arrayBuffer());
      const totalLatencyMs = performance.now() - startedAt;

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