| public BeginGetResponse ( AsyncCallback callback, object state ) : IAsyncResult | ||
| callback | AsyncCallback | |
| state | object | |
| return | IAsyncResult | |
private IAsyncResult GetResponse(string method, Uri uri, bool sendHeaders)
{
if ((uri.Scheme != "http") && (uri.Scheme != "https"))
{
async_result.Exception = new SecurityException("Bad scheme");
async_result.SetComplete();
return(async_result);
}
// this is a same site (site of origin, SOO) request; or
// we either already know the policy (previously downloaded); or
// we try to download the policy
if (!IsDownloadingPolicy())
{
policy = CrossDomainPolicyManager.GetCachedWebPolicy(uri);
if (policy == null)
{
// we'll download the policy *then* proceed to the requested URI
policy = CrossDomainPolicyManager.PolicyDownloadPolicy;
Uri silverlight_policy_uri = CrossDomainPolicyManager.GetSilverlightPolicyUri(uri);
BrowserHttpWebRequestInternal preq = new BrowserHttpWebRequestInternal(null, silverlight_policy_uri);
return(preq.BeginGetResponse(new AsyncCallback(SilverlightPolicyCallback), preq));
}
}
// Console.WriteLine ("{0} '{1}' using policy: {2}", method, uri, policy);
HttpWebRequest wreq = GetHttpWebRequest(uri);
wreq.Method = method;
// store exception, to throw later, if we have no policy or are not allowed by the policy
#if !ANDROID_HACK
if ((policy == null) || !policy.IsAllowed(wreq))
{
if ((policy == null) || (policy.Exception == null))
{
async_result.Exception = new SecurityException();
}
else
{
async_result.Exception = policy.Exception;
}
async_result.SetComplete();
return(async_result);
}
#endif
if (!sendHeaders)
{
wreq.Headers.Clear();
}
wreq.progress = progress;
return(wreq.BeginGetResponse(new AsyncCallback(EndCallback), wreq));
}
private void SilverlightPolicyCallback(IAsyncResult result)
{
WebRequest wreq = (result.AsyncState as WebRequest);
BrowserHttpWebResponse wres = (BrowserHttpWebResponse)wreq.EndGetResponse(result);
policy = CrossDomainPolicyManager.BuildSilverlightPolicy(wres);
if (policy != null)
{
// we got our policy so we can proceed with the main request
GetResponse(this.Method, uri, true);
}
else
{
// no policy but we get a second chance to try a Flash policy
Uri flash_policy_uri = CrossDomainPolicyManager.GetFlashPolicyUri(wres.ResponseUri);
BrowserHttpWebRequestInternal preq = new BrowserHttpWebRequestInternal(null, flash_policy_uri);
preq.BeginGetResponse(new AsyncCallback(FlashPolicyCallback), preq);
}
}
private void SilverlightPolicyCallback (IAsyncResult result)
{
WebRequest wreq = (result.AsyncState as WebRequest);
BrowserHttpWebResponse wres = (BrowserHttpWebResponse) wreq.EndGetResponse (result);
policy = CrossDomainPolicyManager.BuildSilverlightPolicy (wres);
if (policy != null) {
// we got our policy so we can proceed with the main request
GetResponse (this.Method, uri, true);
} else {
// no policy but we get a second chance to try a Flash policy
Uri flash_policy_uri = CrossDomainPolicyManager.GetFlashPolicyUri (wres.ResponseUri);
BrowserHttpWebRequestInternal preq = new BrowserHttpWebRequestInternal (null, flash_policy_uri);
preq.BeginGetResponse (new AsyncCallback (FlashPolicyCallback), preq);
}
}
private IAsyncResult GetResponse (string method, Uri uri, bool sendHeaders)
{
if ((uri.Scheme != "http") && (uri.Scheme != "https")) {
async_result.Exception = new SecurityException ("Bad scheme");
async_result.SetComplete ();
return async_result;
}
// this is a same site (site of origin, SOO) request; or
// we either already know the policy (previously downloaded); or
// we try to download the policy
if (!IsDownloadingPolicy ()) {
policy = CrossDomainPolicyManager.GetCachedWebPolicy (uri);
if (policy == null) {
// we'll download the policy *then* proceed to the requested URI
policy = CrossDomainPolicyManager.PolicyDownloadPolicy;
Uri silverlight_policy_uri = CrossDomainPolicyManager.GetSilverlightPolicyUri (uri);
BrowserHttpWebRequestInternal preq = new BrowserHttpWebRequestInternal (null, silverlight_policy_uri);
return preq.BeginGetResponse (new AsyncCallback (SilverlightPolicyCallback), preq);
}
}
// Console.WriteLine ("{0} '{1}' using policy: {2}", method, uri, policy);
HttpWebRequest wreq = GetHttpWebRequest (uri);
wreq.Method = method;
// store exception, to throw later, if we have no policy or are not allowed by the policy
if ((policy == null) || !policy.IsAllowed (wreq)) {
if ((policy == null) || (policy.Exception == null))
async_result.Exception = new SecurityException ();
else
async_result.Exception = policy.Exception;
async_result.SetComplete ();
return async_result;
}
// new in SL4 - unlike others it can be set (earlier) and is not checked later (CheckProtocolViolation)
// but still throws a SecurityException here
if (Headers.ContainsKey ("Proxy-Authorization"))
throw new SecurityException ();
if (!sendHeaders)
wreq.Headers.Clear ();
wreq.progress = progress;
return wreq.BeginGetResponse (new AsyncCallback (EndCallback), wreq);
}
