public AgentDocument PerformAction(AgentSession session, AgentAction action, int timeout)
{
AgentDocument document;
// these resources must be released if any exceptions occur
HttpWebResponse actionResponse = null;
Stream responseStream = null;
try
{
// set up the request and its headers
var actionRequest = (HttpWebRequest)WebRequest.Create(new Uri(action.WebURL));
if (!string.IsNullOrEmpty(action.Referer))
{
actionRequest.Referer = action.Referer;
}
if (action.IsPost)
{
actionRequest.Method = "POST";
}
else
{
actionRequest.Method = "GET";
}
actionRequest.ContentType = "application/x-www-form-urlencoded";
if (action.UserAgent == null)
{
actionRequest.UserAgent =
"Mozilla/5.0 (Windows NT 6.3; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0";
}
else
{
actionRequest.UserAgent = action.UserAgent;
}
actionRequest.Accept =
"text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,image/jpeg,image/gif;q=0.2,*/*;q=0.1";
actionRequest.AllowAutoRedirect = action.AllowRedirect;
actionRequest.KeepAlive = false;
if (!string.IsNullOrEmpty(action.ProxyAddress))
{
var parts = action.ProxyAddress.Split(':');
if (parts.Length == 2)
{
actionRequest.Proxy = new WebProxy(parts[0], int.Parse(parts[1]));
}
else
{
actionRequest.Proxy = new WebProxy(parts[0]);
}
}
if (timeout > 0)
{
actionRequest.Timeout = timeout;
}
actionRequest.Headers.Add("Accept-Language", "en-us,en;q=0.5");
actionRequest.ProtocolVersion = new Version(action.Version);
actionRequest.CookieContainer = session.Cookies;
if (action.IsPost)
{
if (action.Attachment == null)
{
WriteContent(action, actionRequest);
}
else
{
WriteFileAttachmentContent(action, actionRequest);
}
}
document = new AgentDocument();
actionRequest.ServicePoint.Expect100Continue = false;
actionResponse = (HttpWebResponse)actionRequest.GetResponse();
document.RedirectUri = action.AllowRedirect
? actionResponse.ResponseUri.ToString()
: actionResponse.GetResponseHeader("Location");
responseStream = actionResponse.GetResponseStream();
Debug.Assert(responseStream != null, "responseStream != null");
var responseBuilder = new StringWriter();
var buffer = new byte[1024];
int n;
do
{
n = responseStream.Read(buffer, 0, buffer.Length);
var charBuffer = new char[buffer.Length];
for (var i = 0; i < buffer.Length; i++)
{
charBuffer[i] = (char)buffer[i];
}
responseBuilder.Write(charBuffer, 0, n);
} while (n > 0);
document.ResponseString = responseBuilder.GetStringBuilder().ToString();
responseBuilder.Close();
responseBuilder.Dispose();
document.Uri = actionResponse.ResponseUri.ToString();
}
finally
{
try
{
responseStream?.Close();
}
catch
{
// ignored
}
try
{
actionResponse?.Close();
}
catch
{
// ignored
}
}
return(document);
}
// *** Public API ***
public AgentDocument PerformAction(AgentSession session, AgentAction action)
{
return(PerformAction(session, action, 0));
}