Sentry MCP

/** * Extract client IP address from request headers. * * Checks headers in priority order: * 1. CF-Connecting-IP (Cloudflare's most reliable header) * 2. X-Real-IP (common reverse proxy header) * 3. X-Forwarded-For (fallback, uses first IP in list) * * @param request - Native Request object * @returns Client IP address, or null if not found * * @example * ```typescript * // With native Request * const ip = getClientIp(request); * if (!ip) { * throw new Error("Failed to extract client IP"); * } * * // With Hono Context - use c.req.raw * const ip = getClientIp(c.req.raw); * ``` */ export function getClientIp(request: Request): string | null { const cfConnectingIp = request.headers.get("CF-Connecting-IP"); if (cfConnectingIp) return cfConnectingIp; const xRealIp = request.headers.get("X-Real-IP"); if (xRealIp) return xRealIp; const xForwardedFor = request.headers.get("X-Forwarded-For"); if (xForwardedFor) { const firstIp = xForwardedFor.split(",")[0]?.trim(); if (firstIp) return firstIp; } return null; }