How to use

canTcpListen

method

in

org.apache.servicecomb.foundation.common.net.NetUtils

public static boolean canPublishEndpoint(String listenAddress) {
 if (StringUtils.isEmpty(listenAddress)) {
  LOGGER.info("listenAddress is null, can not publish.");
  return false;
 }
 IpPort ipPort = NetUtils.parseIpPortFromURI("http://" + listenAddress);
 if (ipPort == null) {
  LOGGER.info("invalid listenAddress {}, can not publish, format should be ip:port.", listenAddress);
  return false;
 }
 if (NetUtils.canTcpListen(ipPort.getSocketAddress().getAddress(), ipPort.getPort())) {
  LOGGER.info("{} is not listened, can not publish.", ipPort.getSocketAddress());
  return false;
 }
 return true;
}

@Override
public boolean canInit() {
 setListenAddressWithoutSchema(TransportConfig.getAddress());
 URIEndpointObject ep = (URIEndpointObject) getEndpoint().getAddress();
 if (ep == null) {
  return true;
 }
 if (!NetUtils.canTcpListen(ep.getSocketAddress().getAddress(), ep.getPort())) {
  LOGGER.warn(
    "Can not start VertxRestTransport, the port:{} may have been occupied. You can ignore this message if you are using a web container like tomcat.",
    ep.getPort());
  return false;
 }
 return true;
}

@Override
public boolean canInit() {
 setListenAddressWithoutSchema(TransportConfig.getAddress());
 URIEndpointObject ep = (URIEndpointObject) getEndpoint().getAddress();
 if (ep == null) {
  return true;
 }
 if (!NetUtils.canTcpListen(ep.getSocketAddress().getAddress(), ep.getPort())) {
  LOGGER.warn(
    "Can not start VertxRestTransport, the port:{} may have been occupied. You can ignore this message if you are using a web container like tomcat.",
    ep.getPort());
  return false;
 }
 return true;
}