export function getIssuerCertificate()

in src/connection/BaseConnection.ts [219:237]

• 13 lines of code
• 5 McCabe index (conditional complexity)

export function getIssuerCertificate (socket: TLSSocket): DetailedPeerCertificate | null {
  let certificate = socket.getPeerCertificate(true)
  while (certificate !== null && Object.keys(certificate).length > 0) {
    // invalid certificate
    if (certificate.issuerCertificate == null) {
      return null
    }

    // We have reached the root certificate.
    // In case of self-signed certificates, `issuerCertificate` may be a circular reference.
    if (certificate.fingerprint256 === certificate.issuerCertificate.fingerprint256) {
      break
    }

    // continue the loop
    certificate = certificate.issuerCertificate
  }
  return certificate
}