public HttpRangeHeader GetRange()
{
string rangeString = GetHeader("Range");
if (String.IsNullOrEmpty(rangeString))
{
return(null);
}
HttpRangeHeader rangeHeader;
if (HttpRangeHeader.TryParse(rangeString, out rangeHeader))
{
return(rangeHeader);
}
return(null);
}
public static bool TryParse(string rangeString, out HttpRangeHeader rangeHeader)
{
rangeHeader = null;
if (String.IsNullOrEmpty(rangeString))
{
return(false);
}
int equalIndex = rangeString.IndexOf('=');
int dashIndex = rangeString.IndexOf('-');
// The equal should be before the dash.
if (dashIndex <= equalIndex)
{
return(false);
}
// There should be something else after the equal.
if (equalIndex + 1 >= rangeString.Length)
{
return(false);
}
string firstBytePosString = rangeString.Substring(equalIndex + 1, dashIndex - equalIndex - 1);
string lastBytePosString = String.Empty;
if (dashIndex + 1 <= rangeString.Length)
{
lastBytePosString = rangeString.Substring(dashIndex + 1);
}
long last;
if (!String.IsNullOrEmpty(lastBytePosString))
{
if (!Int64.TryParse(lastBytePosString, out last))
{
// Invalid header, stop parsing.
return(false);
}
}
else
{
last = Int64.MaxValue;
}
long first = 0;
if (!String.IsNullOrEmpty(firstBytePosString))
{
if (!Int64.TryParse(firstBytePosString, out first))
{
// Invalid header, stop parsing.
return(false);
}
}
else
{
last *= -1;
}
rangeHeader = new HttpRangeHeader(first, last);
return(true);
}
private void SendResponse(HeyHttpResponse response)
{
try
{
// Set default content.
response.ContentStream = CreateDefaultResponseStream();
// Do authentication.
HeyHttpAuthentication.AddAuthenticateHeaderIfNeeded(request, response);
// Custom headers.
if (request.QueryStringHasTrueValue("custom"))
{
response.Headers.Add("X-Header: Value1");
response.Headers.Add("X-Header: Value2");
response.Headers.Add("X-Header: Value3");
}
// Show the 'Save As' dialog.
string filename;
if (request.QueryStringHas("filename", out filename))
{
response.Headers.Add(String.Format("Content-Disposition: Attachment; filename={0}", filename));
}
// 201 Created for AtomPub.
if (request.QueryStringHasTrueValue("create"))
{
response.Status = "201 Created";
response.Headers.Add("Location: http://heyhttp.org/Data/first-post.atom");
response.Headers.Add("Content-Location: http://heyhttp.org/Data/first-post.atom");
response.Headers.Add("ETag: \"e180ee84f0671b1\"");
}
// 301 Moved Permanently.
string redirect;
if (request.QueryStringHas("redirect", out redirect))
{
response.Status = "301 Moved Permanently";
response.Headers.Add("Location: " + redirect);
// Do not send any data back.
request.Path = "";
}
// 503 Service Unavailable, retry after N seconds.
if (request.QueryStringHasTrueValue("retry"))
{
if (!retryReceivedBefore)
{
response.Status = "503 Service Unavailable";
response.Headers.Add("Retry-After: 5");
response.ContentStream = GetStringStream(String.Empty);
}
retryReceivedBefore = !retryReceivedBefore;
}
// Set cache headers.
if (request.QueryStringHasTrueValue("cache"))
{
response.Headers.Add("Cache-Control: max-age=3600"); // One hour (60 minutes * 60 seconds)
//additionalHeaders.Add("Expires: " + DateTime.UtcNow.AddHours(24).ToString("R"));
}
else if (request.QueryStringHasTrueValue("nocache"))
{
response.Headers.Add("Cache-Control: no-cache"); // HTTP 1.1
}
// Set cookie header.
if (request.QueryStringHasTrueValue("setcookie"))
{
response.Headers.Add("Set-Cookie: sessionTestCookie=X");
response.Headers.Add("Set-Cookie: persistentTestCookie=Y; expires=Wednesday, 09-Nov-2020 23:12:40 GMT");
response.Headers.Add("Set-Cookie: httpOnlyTestCookie=X; expires=Wednesday, 09-Nov-2020 23:12:40 GMT; HttpOnly");
response.Headers.Add("Set-Cookie: subdomainTestCookie=ghi; expires=Wednesday, 09-Nov-2020 23:12:40 GMT; domain=foo.heyhttp.org");
response.Headers.Add("Set-Cookie: slashEndingCookie=b; expires=Wednesday, 09-Nov-2020 23:12:40 GMT; domain=heyhttp.org; path=/foo/");
response.Headers.Add("Set-Cookie: nonSlashEndingCookie=a; expires=Wednesday, 09-Nov-2020 23:12:40 GMT; domain=heyhttp.org; path=/foo");
}
// Return an specific HTTP status.
int requestedStatus;
if (request.QueryStringHas("status", out requestedStatus))
{
response.Status = String.Format("{0} Foo Foo Bar", requestedStatus);
}
// Set arbitrary header.
string headerName;
string headerValue;
if (request.QueryStringHas("name", out headerName) && request.QueryStringHas("value", out headerValue))
{
response.Headers.Add(String.Format("{0}: {1}", headerName, headerValue));
}
// Introduce a long delay.
int delay;
if (request.QueryStringHas("delay", out delay))
{
Thread.Sleep(delay);
}
// Get trace content stream.
if (request.QueryStringHasTrueValue("trace"))
{
response.ContentStream = GetTraceStream();
// Do not send any data back.
request.Path = "";
}
// Get file.
if (!String.IsNullOrEmpty(request.Path) &&
!String.IsNullOrEmpty(response.Status) &&
request.Path != "/" &&
!response.Status.StartsWith("404"))
{
try
{
response.ContentStream = GetFileStream();
}
catch (FileNotFoundException ex)
{
response.Status = "404 Not Found";
response.ContentStream = GetStringStream(ex.Message);
}
catch (DirectoryNotFoundException ex)
{
response.Status = "404 Not Found";
response.ContentStream = GetStringStream(ex.Message);
}
}
// Create a response of the length given.
long sizeInBytes;
if (request.QueryStringHas("length", out sizeInBytes))
{
response.ContentStream = CreateBigStream(sizeInBytes);
}
// This check must be done after the response coontent has been selected.
string eTag;
bool useETag = request.QueryStringHas("etag", out eTag);
if (useETag)
{
//// 304 Not Modified with ETag.
//if (request.GetHeader("If-None-Match") == eTag)
//{
// response.Status = "304 Not Modified";
// response.ContentStream = GetStringStream(String.Empty);
//}
//else
//{
//}
// This 'if' is to manually change the flow when debugging.
if (DateTime.Now.Second == -1)
{
eTag = String.Empty;
response.Status = "404 NOT FOUND";
response.ContentStream = GetStringStream("Oops!");
}
else
{
response.Headers.Add(String.Format("ETag: \"{0}\"", eTag));
response.Headers.Add("Accept-Ranges: bytes");
}
}
bool useLastModified = request.QueryStringHasTrueValue("lastModified");
if (useLastModified)
{
response.Headers.Add("Last-Modified: Thu, 21 Aug 2014 21:34:57 GMT");
response.Headers.Add("Accept-Ranges: bytes");
}
HttpRangeHeader rangeHeader = request.GetRange();
if (rangeHeader != null && (useETag || useLastModified))
{
response.Status = "206 Partial Content";
response.Headers.Add(rangeHeader.GetContentRange(response.ContentStream.Length));
response.FirstPosition = rangeHeader.FirstPosition;
response.LastPosition = rangeHeader.LastPosition;
}
ForkSendResponse(response);
}
finally
{
// 'finally' block is executed even if a 'try' or 'catch' block contains a 'return'.
if (response.ContentStream != null)
{
response.ContentStream.Dispose();
}
}
}
