fix: Vercel serverless function crash and await async completions routes
- Make generateDeviceFingerprint resilient to os.cpus() and os.hostname() returning empty or throwing in lambda sandboxes. - Await async handleChatCompletion and handleAnthropicMessages calls in route handlers to prevent unhandled promise rejections. - Catch runtime exceptions from completions and return clean HTTP 500 JSON error responses. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
MythEclipse
co-authored by
Claude Opus 4.8
Claude Opus 4.8
parent
2171a01974
commit
d1d6f607b0
+30
-96
@@ -105,92 +105,6 @@ function handleHealth(): Response {
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);
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}
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function handleDocs(): Response {
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const html = `<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Edge Proxy Relay — Docs</title>
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<style>
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*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
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body { font-family: system-ui, -apple-system, sans-serif; line-height: 1.6; color: #e1e4e8; background: #0d1117; padding: 2rem; }
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main { max-width: 800px; margin: 0 auto; }
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h1 { font-size: 2rem; margin-bottom: 0.5rem; color: #58a6ff; }
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h2 { font-size: 1.25rem; margin: 2rem 0 0.75rem; color: #c9d1d9; border-bottom: 1px solid #30363d; padding-bottom: 0.25rem; }
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p, li { color: #8b949e; }
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code { background: #161b22; padding: 0.2em 0.4em; border-radius: 4px; font-size: 0.9em; color: #f0f6fc; }
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pre { background: #161b22; padding: 1rem; border-radius: 6px; overflow-x: auto; margin: 0.75rem 0; border: 1px solid #30363d; }
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pre code { background: none; padding: 0; }
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table { width: 100%; border-collapse: collapse; margin: 0.75rem 0; }
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th, td { text-align: left; padding: 0.5rem 0.75rem; border: 1px solid #30363d; }
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th { background: #161b22; color: #c9d1d9; }
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ul { padding-left: 1.5rem; margin: 0.5rem 0; }
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.endpoint { background: #161b22; border: 1px solid #30363d; border-radius: 6px; padding: 1rem; margin: 1rem 0; }
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.endpoint h3 { color: #58a6ff; font-family: monospace; margin-bottom: 0.5rem; }
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.status { color: #3fb950; }
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a { color: #58a6ff; }
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</style>
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</head>
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<body>
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<main>
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<h1>Edge Proxy Relay</h1>
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<p>Forward HTTP requests to any target server via the <code>x-relay-target</code> header.</p>
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<h2>Endpoints</h2>
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<div class="endpoint">
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<h3>GET /health</h3>
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<p>Health check. Returns <span class="status">200 OK</span> with server status, uptime, and version.</p>
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</div>
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<div class="endpoint">
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<h3>GET /docs</h3>
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<p>This page.</p>
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</div>
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<div class="endpoint">
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<h3>Any Path (Catch-all Relay)</h3>
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<p>Send a request with the <code>x-relay-target</code> header and this proxy forwards it.</p>
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</div>
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<h2>Usage — HTTP Relay</h2>
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<pre><code>curl -s \\
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-H "x-relay-target: https://httpbin.org" \\
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-H "x-relay-path: /get" \\
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"https://your-proxy.example/any/path"</code></pre>
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<table>
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<tr><th>Header</th><th>Required</th><th>Description</th></tr>
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<tr><td><code>x-relay-target</code></td><td>Yes</td><td>Base URL of the upstream (http:// or https://)</td></tr>
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<tr><td><code>x-relay-path</code></td><td>No</td><td>Path to append (default: <code>/</code>)</td></tr>
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</table>
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<h2>Status Codes</h2>
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<table>
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<tr><th>Code</th><th>Meaning</th></tr>
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<tr><td>204</td><td>CORS preflight success (OPTIONS)</td></tr>
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<tr><td>400</td><td>Missing <code>x-relay-target</code> header</td></tr>
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<tr><td>403</td><td>Target blocked (SSRF protection / not allowed)</td></tr>
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<tr><td>413</td><td>Request body exceeds size limit</td></tr>
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<tr><td>429</td><td>Rate limit exceeded</td></tr>
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<tr><td>502</td><td>Upstream network / DNS error</td></tr>
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<tr><td>504</td><td>Upstream timeout</td></tr>
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</table>
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<p><strong>Note:</strong> WebSocket relay is not available on this deployment.</p>
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</main>
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</body>
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</html>`;
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return new Response(html, {
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status: 200,
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headers: {
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"Content-Type": "text/html; charset=utf-8",
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"Access-Control-Allow-Origin": "*",
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},
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});
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}
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function handleIndex(): Response {
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const html = `<!DOCTYPE html>
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<html lang="en">
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@@ -212,7 +126,7 @@ function handleIndex(): Response {
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<main>
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<h1>Edge Proxy Relay</h1>
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<p class="status">Server is running</p>
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<p><a href="/health">/health</a> · <a href="/docs">/docs</a></p>
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<p><a href="/health">/health</a></p>
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</main>
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</body>
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</html>`;
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@@ -333,7 +247,7 @@ async function handleRelay(req: Request): Promise<Response> {
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// ── Execute upstream fetch ──────────────────────────────────────
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let response: Response;
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try {
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response = await fetch(targetUrlString, fetchOptions);
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response = await fetch(targetUrlString, fetchOptions);
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} catch (err) {
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const classified = classifyFetchError(err);
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logRelayEvent({
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@@ -423,11 +337,18 @@ export default {
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if (authErr) return authErr;
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try {
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const body = await req.json();
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return handleChatCompletion(body);
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} catch {
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return await handleChatCompletion(body);
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} catch (err) {
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const isJsonError = err instanceof Error && (err.name === "SyntaxError" || err.message.includes("JSON"));
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if (isJsonError) {
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return new Response(
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JSON.stringify({ error: { message: "Invalid JSON body", type: "invalid_request_error" } }),
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{ status: 400, headers: { "Content-Type": "application/json", "Access-Control-Allow-Origin": "*" } },
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);
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}
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return new Response(
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JSON.stringify({ error: { message: "Invalid JSON body", type: "invalid_request_error" } }),
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{ status: 400, headers: { "Content-Type": "application/json", "Access-Control-Allow-Origin": "*" } },
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JSON.stringify({ error: { message: err instanceof Error ? err.message : "Internal Server Error", type: "server_error" } }),
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{ status: 500, headers: { "Content-Type": "application/json", "Access-Control-Allow-Origin": "*" } },
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);
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}
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}
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@@ -440,11 +361,24 @@ export default {
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if (authErr) return authErr;
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try {
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const body = await req.json();
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return handleAnthropicMessages(body);
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} catch {
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return await handleAnthropicMessages(body);
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} catch (err) {
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const isJsonError = err instanceof Error && (err.name === "SyntaxError" || err.message.includes("JSON"));
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if (isJsonError) {
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return new Response(
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JSON.stringify({
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type: "error",
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error: { message: "Invalid JSON body", type: "invalid_request_error" },
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}),
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{ status: 400, headers: { "Content-Type": "application/json", "Access-Control-Allow-Origin": "*" } },
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);
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}
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return new Response(
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JSON.stringify({ error: { message: "Invalid JSON body", type: "invalid_request_error" } }),
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{ status: 400, headers: { "Content-Type": "application/json", "Access-Control-Allow-Origin": "*" } },
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JSON.stringify({
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type: "error",
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error: { message: err instanceof Error ? err.message : "Internal Server Error", type: "server_error" },
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}),
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{ status: 500, headers: { "Content-Type": "application/json", "Access-Control-Allow-Origin": "*" } },
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);
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}
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}
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