/* REPLACE
ws ?= ?new WebSocketConstructor\(url, ?opts\)
*/
try {
  let transport;
  let tls = url.includes("---tls-enabled---");
  url = url.replace("---tls-enabled---", "");
  if (api.transport === "wisp") {
    transport = new WispWebSocket(url);
  }
  else if (api.transport === "wsproxy") {
    transport = new WebSocket(url);
  }
  else if (typeof api.transport === "string") {
    throw new TypeError("invalid transport type");
  }
  else { //custom transports
    transport = new api.transport(url);
  }
  //
  if (tls) {
    ws = new tls_shim.ReclaimTLSSocket(url, transport);
  }
  else {
    ws = transport;
  }
}
catch (e) {
  error_msg("Error while creating a TCP connection: " + e);
  throw e;
}