Example usage for org.apache.http.conn ClientConnectionManager requestConnection

Introduction

In this page you can find the example usage for org.apache.http.conn ClientConnectionManager requestConnection.

Prototype

ClientConnectionRequest requestConnection(HttpRoute route, Object state);

Source Link

Document

Returns a new ClientConnectionRequest , from which a ManagedClientConnection can be obtained or the request can be aborted.

Usage

From source file:httpclient.conn.ManagerConnectDirect.java

/**
 * Main entry point to this example.//www  .j  av a2s.  c  o m
 *
 * @param args      ignored
 */
public final static void main(String[] args) throws Exception {

    final HttpHost target = new HttpHost("jakarta.apache.org", 80, "http");

    setup(); // some general setup

    ClientConnectionManager clcm = createManager();

    HttpRequest req = createRequest(target);
    HttpContext ctx = createContext();

    System.out.println("preparing route to " + target);
    HttpRoute route = new HttpRoute(target, null, supportedSchemes.getScheme(target).isLayered());

    System.out.println("requesting connection for " + route);
    ClientConnectionRequest connRequest = clcm.requestConnection(route, null);
    ManagedClientConnection conn = connRequest.getConnection(0, null);
    try {
        System.out.println("opening connection");
        conn.open(route, ctx, getParams());

        System.out.println("sending request");
        conn.sendRequestHeader(req);
        // there is no request entity
        conn.flush();

        System.out.println("receiving response header");
        HttpResponse rsp = conn.receiveResponseHeader();

        System.out.println("----------------------------------------");
        System.out.println(rsp.getStatusLine());
        Header[] headers = rsp.getAllHeaders();
        for (int i = 0; i < headers.length; i++) {
            System.out.println(headers[i]);
        }
        System.out.println("----------------------------------------");

        System.out.println("closing connection");
        conn.close();

    } finally {

        if (conn.isOpen()) {
            System.out.println("shutting down connection");
            try {
                conn.shutdown();
            } catch (Exception x) {
                System.out.println("problem during shutdown");
                x.printStackTrace(System.out);
            }
        }

        System.out.println("releasing connection");
        clcm.releaseConnection(conn, -1, null);
    }

}

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From source file:httpclient.conn.ManagerConnectProxy.java

/**
 * Main entry point to this example.//w  ww. j a  va2 s .co m
 *
 * @param args      ignored
 */
public final static void main(String[] args) throws Exception {

    // make sure to use a proxy that supports CONNECT
    final HttpHost target = new HttpHost("issues.apache.org", 443, "https");
    final HttpHost proxy = new HttpHost("127.0.0.1", 8666, "http");

    setup(); // some general setup

    ClientConnectionManager clcm = createManager();

    HttpRequest req = createRequest(target);
    HttpContext ctx = createContext();

    System.out.println("preparing route to " + target + " via " + proxy);
    HttpRoute route = new HttpRoute(target, null, proxy, supportedSchemes.getScheme(target).isLayered());

    System.out.println("requesting connection for " + route);
    ClientConnectionRequest connRequest = clcm.requestConnection(route, null);
    ManagedClientConnection conn = connRequest.getConnection(0, null);
    try {
        System.out.println("opening connection");
        conn.open(route, ctx, getParams());

        HttpRequest connect = createConnect(target);
        System.out.println("opening tunnel to " + target);
        conn.sendRequestHeader(connect);
        // there is no request entity
        conn.flush();

        System.out.println("receiving confirmation for tunnel");
        HttpResponse connected = conn.receiveResponseHeader();
        System.out.println("----------------------------------------");
        printResponseHeader(connected);
        System.out.println("----------------------------------------");
        int status = connected.getStatusLine().getStatusCode();
        if ((status < 200) || (status > 299)) {
            System.out.println("unexpected status code " + status);
            System.exit(1);
        }
        System.out.println("receiving response body (ignored)");
        conn.receiveResponseEntity(connected);

        conn.tunnelTarget(false, getParams());

        System.out.println("layering secure connection");
        conn.layerProtocol(ctx, getParams());

        // finally we have the secure connection and can send the request

        System.out.println("sending request");
        conn.sendRequestHeader(req);
        // there is no request entity
        conn.flush();

        System.out.println("receiving response header");
        HttpResponse rsp = conn.receiveResponseHeader();

        System.out.println("----------------------------------------");
        printResponseHeader(rsp);
        System.out.println("----------------------------------------");

        System.out.println("closing connection");
        conn.close();

    } finally {

        if (conn.isOpen()) {
            System.out.println("shutting down connection");
            try {
                conn.shutdown();
            } catch (Exception x) {
                System.out.println("problem during shutdown");
                x.printStackTrace(System.out);
            }
        }

        System.out.println("releasing connection");
        clcm.releaseConnection(conn, -1, null);
    }

}

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