Function detectGateway

src/services/api/logging.ts:107–139

({
  headers,
  baseUrl,
}: {
  headers?: globalThis.Headers
  baseUrl?: string
})

}

function detectGateway({
  headers,
  baseUrl,
}: {
  headers?: globalThis.Headers
  baseUrl?: string
}): KnownGateway | undefined {
  if (headers) {
    // Header names are already lowercase from the Headers API
    const headerNames: string[] = []
    headers.forEach((_, key) => headerNames.push(key))
    for (const [gw, { prefixes }] of Object.entries(GATEWAY_FINGERPRINTS)) {
      if (prefixes.some(p => headerNames.some(h => h.startsWith(p)))) {
        return gw as KnownGateway
      }
    }
  }

  if (baseUrl) {
    try {
      const host = new URL(baseUrl).hostname.toLowerCase()
      for (const [gw, suffixes] of Object.entries(GATEWAY_HOST_SUFFIXES)) {
        if (suffixes.some(s => host.endsWith(s))) {
          return gw as KnownGateway
        }
      }
    } catch {
      // malformed URL — ignore
    }
  }

  return undefined
}

function getAnthropicEnvMetadata() {
  return {