wehub-resource-sync
73 lines
3.1 KiB
JavaScript
73 lines
3.1 KiB
JavaScript
/**
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* tests/unit/responses-ws-proxy-headers.test.mjs
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*
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* Regression for the codex Responses-over-WebSocket upgrade bug:
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* writeHttpError used to spread the internal fetch's response headers onto the
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* raw upgrade socket. Those headers include a chunked `transfer-encoding` (the
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* internal 401 has no Content-Length) plus Next security headers, which collide
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* with writeHttpError's own `Content-Length` framing → the client's HTTP parser
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* fails with "Transfer-Encoding can't be present with Content-Length".
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*
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* writeHttpError must now strip framing / duplicate-prone headers (case-insensitive)
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* so its Content-Length/Connection/Content-Type defaults always win.
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*/
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import test from "node:test";
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import assert from "node:assert/strict";
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const { writeHttpError } = await import("../../scripts/dev/responses-ws-proxy.mjs");
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function fakeSocket() {
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return {
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writable: true,
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destroyed: false,
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_head: "",
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_body: null,
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write(chunk) {
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this._head += String(chunk);
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},
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end(chunk) {
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if (chunk !== undefined) this._body = chunk;
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},
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};
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}
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test("writeHttpError strips chunked transfer-encoding + leaked pipeline headers from the caller", () => {
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const sock = fakeSocket();
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// Simulate the exact offending input: undici Object.fromEntries of a chunked
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// Next 401 (no content-length) with security + pipeline headers.
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writeHttpError(sock, 401, JSON.stringify({ error: { message: "ws_auth_required" } }), {
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"transfer-encoding": "chunked",
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connection: "keep-alive",
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"content-type": "application/json",
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"content-security-policy": "default-src 'self'",
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"x-frame-options": "DENY",
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"x-omniroute-route-class": "MANAGEMENT",
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"x-request-id": "abc",
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});
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const head = sock._head;
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const lower = head.toLowerCase();
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// The single most important invariant: never both framing headers.
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assert.ok(lower.includes("content-length:"), "must emit Content-Length");
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assert.ok(!lower.includes("transfer-encoding"), "must NOT emit Transfer-Encoding alongside Content-Length");
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assert.ok(!lower.includes("keep-alive"), "must not forward the upstream keep-alive Connection");
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// Exactly one Content-Type (no duplicate from a case-mismatched spread).
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assert.equal((lower.match(/content-type:/g) || []).length, 1, "exactly one Content-Type header");
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// Pipeline / security headers must not leak onto the raw upgrade socket.
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assert.ok(!lower.includes("content-security-policy"), "must not leak CSP");
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assert.ok(!lower.includes("x-omniroute-route-class"), "must not leak route-class");
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// Our own framing defaults win.
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assert.ok(head.startsWith("HTTP/1.1 401 "), "status line preserved");
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assert.ok(lower.includes("connection: close"), "Connection: close default wins");
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});
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test("writeHttpError still forwards safe non-framing headers (e.g. retry-after)", () => {
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const sock = fakeSocket();
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writeHttpError(sock, 429, "{}", { "retry-after": "5", "transfer-encoding": "chunked" });
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const lower = sock._head.toLowerCase();
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assert.ok(lower.includes("retry-after: 5"), "safe header forwarded");
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assert.ok(!lower.includes("transfer-encoding"), "framing header still stripped");
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});
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