/**
* Returns the next connection to attempt.
*
* @throws NoSuchElementException if there are no more routes to attempt.
*/
Connection nextUnconnected() throws IOException {
// Always prefer pooled connections over new connections.
for (Connection pooled; (pooled = pool.get(address)) != null; ) {
if (request.method().equals("GET") || Internal.instance.isReadable(pooled)) return pooled;
pooled.getSocket().close();
}
// Compute the next route to attempt.
if (!hasNextTlsVersion()) {
if (!hasNextInetSocketAddress()) {
if (!hasNextProxy()) {
if (!hasNextPostponed()) {
throw new NoSuchElementException();
}
return new Connection(pool, nextPostponed());
}
lastProxy = nextProxy();
resetNextInetSocketAddress(lastProxy);
}
lastInetSocketAddress = nextInetSocketAddress();
resetNextTlsVersion();
}
String tlsVersion = nextTlsVersion();
Route route = new Route(address, lastProxy, lastInetSocketAddress, tlsVersion);
if (routeDatabase.shouldPostpone(route)) {
postponedRoutes.add(route);
// We will only recurse in order to skip previously failed routes. They will be
// tried last.
return nextUnconnected();
}
return new Connection(pool, route);
}
/** 配置Client对象 */
private void configHttpClient() {
this.client.setConnectTimeout(30, TimeUnit.SECONDS);
this.client.setReadTimeout(30, TimeUnit.SECONDS);
this.client.setWriteTimeout(30, TimeUnit.SECONDS);
this.client.setConnectionPool(ConnectionPool.getDefault());
this.client.getDispatcher().setMaxRequestsPerHost(3);
this.client.getDispatcher().setMaxRequests(3);
// 拦截器
this.client.interceptors().add(new LoggingInterceptor());
}