Netlib HttpUtil

Netlib HttpUtil

Abstract: This class HttpUtil supports simple HTTP communication top of a silvertunnel-ng.org Netlib NetLayer.

The class org.silvertunnel_ng.netlib.util.HttpUtil contains different methods to execute a HTTP GET or POST request. All of these methods return a byte array as result which represents the HTTP response body. HttpUtil does not support reading or writing any HTTP header information, i.e. it is really a very simple way of communication.

Hint: HttpUtil only supports client-side HTTP.

HTTP GET Example

It follows an example:

• select the NetLayer implementation that should be used:

      // classic:   TcpipNetLayer with NetLayerIDs.TCPIP (--> HTTP over plain TCP/IP);
  
      // anonymous: TorNetLayer with NetLayerIDs.TOR (--> HTTP over TCP/IP over Tor network):
  
      NetLayer lowerNetLayer = NetFactory.getInstance().getNetLayerById(NetLayerIDs.TOR);
  
  

• only if anonymous communication over Tor is selected: it makes sense to wait until the Tor startup is finished - optional:

      // wait until TOR is ready (optional):
  
      lowerNetLayer.waitUntilReady();
  
  

• send HTTP GET request to URL http://httptest.silvertunnel.org:80/httptest/bigtest.jsp?id=example and receive the response:

      // prepare parameters
  
      TcpipNetAddress httpServerNetAddress = new TcpipNetAddress("httptest.silvertunnel-ng.org", 80);
  
      String pathOnHttpServer = "/httptest/bigtest.jsp?id=example";
  
      long timeoutInMs = 5000;
  
  // do the request and wait for the response
  byte[] responseBody = HttpUtil.get(lowerNetLayer, httpServerNetAddress, pathOnHttpServer, timeoutInMs);
  
  // print out the response
  System.out.println(new String(responseBody));
  
  
  
  

More

• all HTTP APIs: see [Netlib HTTP]
• more HTTP example code: see org.silvertunnel.netlib.NetlibHttpUsageExamplesRemoteTest

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Top: [Netlib], Next: [Netlib HTTP Client for Apache API]