public static EndpointDescription select(EndpointDescription[] endpoints, String url)
throws ServiceResultException {
// Use best endpoint of the same uri
EndpointDescription[] endpointsOfTheSameUri =
EndpointUtil.select(endpoints, url, null, null, null, null);
if (endpointsOfTheSameUri.length > 0) {
return select(endpointsOfTheSameUri);
}
// Use best endpoint of the same scheme
String scheme = UriUtil.getTransportProtocol(url);
EndpointDescription[] endpointsOfTheSameScheme =
EndpointUtil.select(endpoints, null, scheme, null, null, null);
if (endpointsOfTheSameScheme.length > 0) {
return select(endpointsOfTheSameScheme);
}
// Just choose one endpoint
return select(endpoints);
}
/**
* Convert endpoint url to socket addresses.
*
* @param endpointUrl
* @return a collection of bind addresses
* @throws IllegalArgumentException endpointUrl is problematic some way
*/
public static List<SocketAddress> toSocketAddresses(String endpointUrl)
throws IllegalArgumentException {
List<SocketAddress> result = new ArrayList<SocketAddress>();
if (endpointUrl == null) throw new IllegalArgumentException("URL not valid.");
try {
URI uri = new URI(endpointUrl);
String proto = UriUtil.getTransportProtocol(endpointUrl);
String host = uri.getHost();
int port = uri.getPort();
if (host == null) {
// Do a custom parse, if the URI is not valid, possibly because it
// does not conform to RFC 2396. This occurs, for example, if the
// host name contains '_' characters, which are used by some Windows
// computers
String[] parts = endpointUrl.split("/+");
// proto = parts[0].split(":")[0]; // // Use the proto parsed from URI, which should be
// fine, already
String[] host_port = parts[1].split(":");
host = host_port[0];
try {
port = Integer.parseInt(host_port[1]);
} catch (NumberFormatException e1) {
port = 0;
} catch (ArrayIndexOutOfBoundsException e2) {
port = 0;
}
}
proto = proto.toLowerCase();
if (port == 0 || port == -1) port = UriUtil.defaultPort(proto);
if (proto.equals("opc.tcp") || proto.equals("http") || proto.equals("https")) {
// Bind to the host in endpoint uri, and to no other interface
try {
// !!WORKAROUND!! Java6 cannot bind to IPv6
// Hostnames (e.g. localhost) resolves to 127.0.0.1 and 0::1
// This workaround omits IPv6 addresses if IPv4 addresses
// exist, but lets error to be thrown if there are only
// IPv6 addresses. This is to show IPv6 cannot be bound
InetAddress addrs[] = InetAddress.getAllByName(host);
boolean hasIPv4 = false;
boolean hasIPv6 = false;
for (InetAddress addr : addrs) {
hasIPv4 |= addr instanceof Inet4Address;
hasIPv6 |= addr instanceof Inet6Address;
}
for (InetAddress addr : InetAddress.getAllByName(host)) {
boolean IPv6 = addr instanceof Inet6Address;
if (IPv6 && hasIPv6 && hasIPv4) {
logger.warn(
"Binding of "
+ endpointUrl
+ " to "
+ addr.getHostAddress()
+ " was omited. (Workaround)");
continue;
}
SocketAddress sa = new InetSocketAddress(addr, port);
result.add(sa);
}
} catch (UnknownHostException e) {
throw new IllegalArgumentException(e);
}
} else {
throw new IllegalArgumentException("Unsupported protocol " + proto);
}
} catch (URISyntaxException ex) {
throw new IllegalArgumentException("Invalid URL", ex);
}
return result;
}
