/**
* Clients should invoke this method when they encounter a connectivity failure on a connection
* returned by this route selector.
*/
public void connectFailed(Route failedRoute, IOException failure) {
if (failedRoute.getProxy().type() != Proxy.Type.DIRECT && address.getProxySelector() != null) {
// Tell the proxy selector when we fail to connect on a fresh connection.
address.getProxySelector().connectFailed(uri, failedRoute.getProxy().address(), failure);
}
routeDatabase.failed(failedRoute);
// If the previously returned route's problem was not related to the connection's spec, and the
// next route only changes that, we shouldn't even attempt it. This suppresses it in both this
// selector and also in the route database.
if (!(failure instanceof SSLHandshakeException) && !(failure instanceof SSLProtocolException)) {
while (nextSpecIndex < connectionSpecs.size()) {
ConnectionSpec connectionSpec = connectionSpecs.get(nextSpecIndex++);
final boolean shouldSendTlsFallbackIndicator =
shouldSendTlsFallbackIndicator(connectionSpec);
Route toSuppress =
new Route(
address,
lastProxy,
lastInetSocketAddress,
connectionSpec,
shouldSendTlsFallbackIndicator);
routeDatabase.failed(toSuppress);
}
}
}
/** Prepares the socket addresses to attempt for the current proxy or host. */
private void resetNextInetSocketAddress(Proxy proxy) throws UnknownHostException {
// Clear the addresses. Necessary if getAllByName() below throws!
inetSocketAddresses = new ArrayList<>();
String socketHost;
int socketPort;
if (proxy.type() == Proxy.Type.DIRECT || proxy.type() == Proxy.Type.SOCKS) {
socketHost = address.getUriHost();
socketPort = getEffectivePort(uri);
} else {
SocketAddress proxyAddress = proxy.address();
if (!(proxyAddress instanceof InetSocketAddress)) {
throw new IllegalArgumentException(
"Proxy.address() is not an " + "InetSocketAddress: " + proxyAddress.getClass());
}
InetSocketAddress proxySocketAddress = (InetSocketAddress) proxyAddress;
socketHost = getHostString(proxySocketAddress);
socketPort = proxySocketAddress.getPort();
}
// Try each address for best behavior in mixed IPv4/IPv6 environments.
for (InetAddress inetAddress : network.resolveInetAddresses(socketHost)) {
inetSocketAddresses.add(new InetSocketAddress(inetAddress, socketPort));
}
nextInetSocketAddressIndex = 0;
}
/** Returns the next proxy to try. May be PROXY.NO_PROXY but never null. */
private Proxy nextProxy() throws IOException {
if (!hasNextProxy()) {
throw new SocketException(
"No route to " + address.getUriHost() + "; exhausted proxy configurations: " + proxies);
}
Proxy result = proxies.get(nextProxyIndex++);
resetNextInetSocketAddress(result);
return result;
}
private RouteSelector(Address address, URI uri, OkHttpClient client, Request request) {
this.address = address;
this.uri = uri;
this.client = client;
this.routeDatabase = Internal.instance.routeDatabase(client);
this.network = Internal.instance.network(client);
this.request = request;
resetNextProxy(uri, address.getProxy());
}
/** Returns the next connection spec to try. */
private ConnectionSpec nextConnectionSpec() throws IOException {
if (!hasNextConnectionSpec()) {
throw new SocketException(
"No route to "
+ address.getUriHost()
+ "; exhausted connection specs: "
+ connectionSpecs);
}
return connectionSpecs.get(nextSpecIndex++);
}
/** Prepares the connection specs to attempt. */
private void resetConnectionSpecs() {
connectionSpecs = new ArrayList<>();
List<ConnectionSpec> specs = address.getConnectionSpecs();
for (int i = 0, size = specs.size(); i < size; i++) {
ConnectionSpec spec = specs.get(i);
if (request.isHttps() == spec.isTls()) {
connectionSpecs.add(spec);
}
}
nextSpecIndex = 0;
}
/** Returns the next socket address to try. */
private InetSocketAddress nextInetSocketAddress() throws IOException {
if (!hasNextInetSocketAddress()) {
throw new SocketException(
"No route to "
+ address.getUriHost()
+ "; exhausted inet socket addresses: "
+ inetSocketAddresses);
}
InetSocketAddress result = inetSocketAddresses.get(nextInetSocketAddressIndex++);
resetConnectionSpecs();
return result;
}