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1c160cc8d9
- Add claudeHeaderCache.js to intercept and cache live Claude Code client headers - Forward cached headers dynamically to api.anthropic.com via default.js - Strip first-party identity headers (x-app, claude-code-* beta) for non-Anthropic upstreams - Validate and sanitize tool call IDs to match Anthropic pattern (^[a-zA-Z0-9_-]+$) - Skip thinking blocks when applying cache_control; fix max_tokens buffer (+1024) - Strip cache_control from thinking blocks in openai-to-claude translator - Comment out thoughtSignature in Gemini translator (kept for reference) - Expand .gitignore to match all deploy*.sh variants Co-authored-by: kwanLeeFrmVi <quanle96@outlook.com> Closes #433 Made-with: Cursor
70 lines
2.0 KiB
JavaScript
70 lines
2.0 KiB
JavaScript
/**
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* Singleton cache for real Claude Code client headers.
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* Captures headers from authentic Claude Code requests and makes them available
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* for forwarding to api.anthropic.com, replacing static hardcoded values.
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*/
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const CLAUDE_IDENTITY_HEADERS = [
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"user-agent",
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"anthropic-beta",
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"anthropic-version",
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"anthropic-dangerous-direct-browser-access",
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"x-app",
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"x-stainless-helper-method",
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"x-stainless-retry-count",
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"x-stainless-runtime-version",
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"x-stainless-package-version",
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"x-stainless-runtime",
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"x-stainless-lang",
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"x-stainless-arch",
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"x-stainless-os",
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"x-stainless-timeout",
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"package-version",
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"runtime-version",
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"os",
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"arch",
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];
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let cachedHeaders = null;
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/**
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* Detect if request headers look like a real Claude Code client.
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* @param {object} headers - Lowercase header key/value object
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*/
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function isClaudeCodeClient(headers) {
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const ua = (headers["user-agent"] || "").toLowerCase();
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const xApp = (headers["x-app"] || "").toLowerCase();
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return ua.includes("claude-cli") || ua.includes("claude-code") || xApp === "cli";
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}
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/**
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* Store Claude Code identity headers if this looks like a real client request.
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* Called at the entry point before any translation/forwarding.
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* @param {object} headers - Lowercase header key/value object (from request.headers.entries())
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*/
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export function cacheClaudeHeaders(headers) {
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if (!headers || typeof headers !== "object") return;
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if (!isClaudeCodeClient(headers)) return;
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const captured = {};
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for (const key of CLAUDE_IDENTITY_HEADERS) {
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if (headers[key] !== undefined && headers[key] !== null) {
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captured[key] = headers[key];
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}
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}
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if (Object.keys(captured).length > 0) {
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cachedHeaders = captured;
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console.log(`[ClaudeHeaders] Cached ${Object.keys(captured).length} identity headers from Claude Code client`);
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}
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}
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/**
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* Get the most recently cached Claude Code identity headers.
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* Returns null if no authentic client request has been seen yet (cold start).
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* @returns {object|null}
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*/
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export function getCachedClaudeHeaders() {
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return cachedHeaders;
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}
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