com.netease.stream.http.HttpClientFactory Maven / Gradle / Ivy

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package com.netease.stream.http;


import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;

import com.netease.stream.config.ClientConfiguration;

/** Responsible for creating and configuring instances of Apache HttpClient4. */
public class HttpClientFactory {

    /**
     * Creates a new HttpClient object using the specified ClientConfiguration to configure the
     * client.
     * 
     * @param config Client configuration options (ex: proxy settings, connection limits, etc).
     * @return The new, configured HttpClient.
     */
    public HttpClient createHttpClient(ClientConfiguration config) {
        /* Form User-Agent information */
        String userAgent = config.getUserAgent();
        if (!(userAgent.equals(ClientConfiguration.DEFAULT_USER_AGENT))) {
            userAgent += ", " + ClientConfiguration.DEFAULT_USER_AGENT;
        }

        /* Set HTTP client parameters */
        HttpParams httpClientParams = new BasicHttpParams();
        HttpProtocolParams.setUserAgent(httpClientParams, userAgent);
        HttpConnectionParams.setConnectionTimeout(httpClientParams, config.getConnectionTimeout());
        HttpConnectionParams.setSoTimeout(httpClientParams, config.getSocketTimeout());
        HttpConnectionParams.setStaleCheckingEnabled(httpClientParams, true);
        HttpConnectionParams.setTcpNoDelay(httpClientParams, true);

        int socketSendBufferSizeHint = config.getSocketBufferSizeHints()[0];
        int socketReceiveBufferSizeHint = config.getSocketBufferSizeHints()[1];
        if (socketSendBufferSizeHint > 0 || socketReceiveBufferSizeHint > 0) {
            HttpConnectionParams.setSocketBufferSize(httpClientParams,
                    Math.max(socketSendBufferSizeHint, socketReceiveBufferSizeHint));
        }

        /* Set connection manager */
        ThreadSafeClientConnManager connectionManager =
                ConnectionManagerFactory
                        .createThreadSafeClientConnManager(config, httpClientParams);
        DefaultHttpClient httpClient = new DefaultHttpClient(connectionManager, httpClientParams);

        return httpClient;
    }

}