internal HttpWebResponse(HttpWebRequest webRequest, IHttpResponse response
#if ANDROID_8P
, AndroidHttpClient client
#endif
)
{
_webRequest = webRequest;
_response = response;
#if ANDROID_8P
this.client = client;
#endif
_entity = _response.GetEntity();
ThrowExceptionIfProtocolError();
}
internal HttpWebResponse(HttpWebRequest webRequest, IHttpResponse response
#if ANDROID_8P
, AndroidHttpClient client
#endif
)
{
_webRequest = webRequest;
_response = response;
#if ANDROID_8P
this.client = client;
#endif
_entity = _response.GetEntity();
ThrowExceptionIfProtocolError();
}
/// <summary>
/// Closes the response stream.
/// </summary>
public override void Close()
{
if (_responseStream != null)
{
_responseStream.Close();
_responseStream = null;
}
#if ANDROID_8P
if (client != null)
{
client.Close();
client = null;
}
#endif
}
/// <summary>
/// Perform the low level request and return the resulting content.
/// </summary>
private static string PerformRequest(string iataCode)
{
var uri = string.Format("http://services.faa.gov/airport/status/{0}?format=application/json", iataCode);
var client = AndroidHttpClient.NewInstance("AirportInfo");
var request = new HttpGet(uri);
try
{
var response = client.Execute(request);
var content = response.GetEntity().GetContent();
var reader = new BufferedReader(new InputStreamReader(content));
var builder = new StringBuilder();
string line;
while ((line = reader.ReadLine()) != null)
{
builder.Append(line);
}
return(builder.ToString());
}
catch (Exception ex)
{
return(null);
}
}
/// <summary>
/// Closes the response stream.
/// </summary>
public override void Close()
{
if (_responseStream != null)
{
_responseStream.Close();
_responseStream = null;
}
#if ANDROID_8P
if (client != null)
{
client.Close();
client = null;
}
#endif
}
/*
* /// <summary>
* /// Gets a Stream object to use to write request data and outputs the context.
* /// </summary>
* public Stream GetRequestStream(out TransportContext context);
*/
/// <summary>
/// Returns a response from an Internet resource.
/// </summary>
/// <remarks>
/// You must close the returned response to avoid socket and memory leaks.
/// </remarks>
public override WebResponse GetResponse()
{
#if ANDROID_8P
var method = this.Method.ToLower();
switch (method)
{
case "get":
_request = new HttpGet();
break;
case "post":
_request = new HttpPost();
break;
case "put":
_request = new HttpPut();
break;
case "delete":
_request = new HttpDelete();
break;
default: //the switch below is to prevent a C# compiler bug with 7 case statements.
switch (method)
{
case "options":
_request = new HttpOptions();
break;
case "head":
_request = new HttpHead();
break;
case "trace":
_request = new HttpTrace();
break;
default:
throw new NotSupportedException(string.Format("Unsupported Method: {0}", this.Method));
}
break;
}
_request.SetURI(_requestUri);
if (ContentLength != -1)
{
var entityRequest = _request as HttpEntityEnclosingRequestBase;
if (entityRequest == null)
{
throw new NotSupportedException(string.Format("Method: {0} does not support a request stream",
this.Method));
}
if (_requestStream.Length < ContentLength)
{
throw new ArgumentException(
string.Format("ContentLength={0}, however the request stream contains only {1} bytes",
ContentLength, _requestStream.Length));
}
_requestStream.Seek(0L, SeekOrigin.Begin);
entityRequest.Entity = new InputStreamEntity(_requestStream, ContentLength);
}
if (Headers != null)
{
var count = Headers.Count;
for (var i = 0; i < count; i++)
{
var key = Headers.GetKey(i);
if (key != "content-length") //The content length is set above.
{
_request.AddHeader(key, Headers.Get(i));
}
}
}
AndroidHttpClient client = null;
try
{
client = AndroidHttpClient.NewInstance(UserAgent);
HttpClientParams.SetRedirecting(client.Params, this.AllowAutoRedirect);
var response = client.Execute(_request);
if (response == null)
{
throw new Exception("Response is null");
}
var header = response.GetFirstHeader(WebHeaderCollection.HeaderToString(HttpResponseHeader.Location));
var uri = header != null ? header.Value : null;
_address = new Uri(!string.IsNullOrEmpty(uri) ? uri : _requestUri.ToString());
var result = new HttpWebResponse(this, response, client);
client = null; // So we won't release it, HttpWebResponse should now release it.
return(result);
}
finally
{
if (client != null)
{
client.Close();
}
}
#else
throw new NotSupportedException("The HttpWebRequest is not supported on Android v2.1, but available as of v2.2");
#endif
}