cleanRelayUrl function

String? cleanRelayUrl(
  1. String adr
)

Implementation

String? cleanRelayUrl(String adr) {
  adr = adr.trim();
  if (adr.endsWith("/")) {
    adr = adr.substring(0, adr.length - 1);
  }
  if (adr.contains("%")) {
    adr = Uri.decodeComponent(adr);
  }
  // Remove extra slashes after protocol (e.g., wss:/// -> wss://)
  adr = adr.replaceFirstMapped(
      RegExp(r'^(wss?:)\/{3,}'), (match) => '${match.group(1)}//');
  if (!adr.contains(RELAY_URL_REGEX)) {
    return null;
  }
  return adr;
}