I'm submitting multiple HTTP Requests via a DefaultHttpClient. The problem is that the "Host" header is never set in the request. For example by executing the following GET request:
HttpUriRequest request = new HttpGet("http://www.myapp.com");
org.apache.http.client.HttpClient client = new DefaultHttpClient();
HttpResponse httpResponse = client.execute(request);
The generated request object doesn't set the mandatory "Host" header with the value:
Host: myapp.com
Any tips?
My fault. Actually the DefaultHttpClient do adds the Host header, as required by the HTTP specification.
My problem was due to an other custom header I was adding before whose value ended with
"\r\n". This has invalidated all the subsequent headers added automatically by DefaultHttpClient.
I was doing something like:
HttpUriRequest request = new HttpGet("http://www.myapp.com");
org.apache.http.client.HttpClient client = new DefaultHttpClient();
request.addHeader(new BasicHeader("X-Custom-Header", "Some Value\r\n");
HttpResponse httpResponse = client.execute(request);
that generated the following Header sequence in the HTTP request:
GET /index.html HTTP/1.1
X-Custom-Header: Some value
Host: www.example.com
The space between X-Custom-Header and Host invalidated the Host header.
Fixed with:
HttpUriRequest request = new HttpGet("http://www.myapp.com");
org.apache.http.client.HttpClient client = new DefaultHttpClient();
request.addHeader(new BasicHeader("X-Custom-Header", "Some Value");
HttpResponse httpResponse = client.execute(request);
That generates:
GET /index.html HTTP/1.1
X-Custom-Header: Some value
Host: www.example.com
Base64.DEFAULT, which includes line terminators. As a result all key-value pairs coming after the custom header got messed up (couldn't even see them when running the request through a proxy). Switching to Base64.NO_WRAP solved my problem, as it omits all line terminators (that is, the output is one long line).Just set the host header on the request using addHeader.
Host and confirm that it worked by getting djce.org.uk/dumprequest. That page dumps back the headers it receives, and sure enough, the value of Host was what I set it to (not djce.org.uk, which is what it would be if the Host value had not been changed).