// Worker thread
private void WorkerThread( )
{
// buffer to read stream
byte[] buffer = new byte[bufSize];
// JPEG magic number
byte[] jpegMagic = new byte[] { 0xFF, 0xD8, 0xFF };
int jpegMagicLength = 3;
ASCIIEncoding encoding = new ASCIIEncoding( );
while (!stopEvent.WaitOne(0, false))
{
// reset reload event
reloadEvent.Reset( );
// HTTP web request
HttpWebRequest request = null;
// web responce
WebResponse response = null;
// stream for MJPEG downloading
Stream stream = null;
// boundary betweeen images (string and binary versions)
byte[] boundary = null;
string boudaryStr = null;
// length of boundary
int boundaryLen;
// flag signaling if boundary was checked or not
bool boundaryIsChecked = false;
// read amounts and positions
int read, todo = 0, total = 0, pos = 0, align = 1;
int start = 0, stop = 0;
// align
// 1 = searching for image start
// 2 = searching for image end
try
{
// create request
request = (HttpWebRequest)WebRequest.Create(source);
// set user agent
if (userAgent != null)
{
request.UserAgent = userAgent;
}
// set proxy
if (proxy != null)
{
request.Proxy = proxy;
}
// set timeout value for the request
request.Timeout = requestTimeout;
// set login and password
if ((login != null) && (password != null) && (login != string.Empty))
{
request.Credentials = new NetworkCredential(login, password);
}
// set connection group name
if (useSeparateConnectionGroup)
{
request.ConnectionGroupName = GetHashCode( ).ToString( );
}
// force basic authentication through extra headers if required
if (forceBasicAuthentication)
{
string authInfo = string.Format("{0}:{1}", login, password);
authInfo = Convert.ToBase64String(Encoding.Default.GetBytes(authInfo));
request.Headers["Authorization"] = "Basic " + authInfo;
}
// get response
response = request.GetResponse( );
// check content type
string contentType = response.ContentType;
string[] contentTypeArray = contentType.Split('/');
// "application/octet-stream"
if ((contentTypeArray[0] == "application") && (contentTypeArray[1] == "octet-stream"))
{
boundaryLen = 0;
boundary = new byte[0];
}
else if ((contentTypeArray[0] == "multipart") && (contentType.Contains("mixed")))
{
// get boundary
int boundaryIndex = contentType.IndexOf("boundary", 0);
if (boundaryIndex != -1)
{
boundaryIndex = contentType.IndexOf("=", boundaryIndex + 8);
}
if (boundaryIndex == -1)
{
// try same scenario as with octet-stream, i.e. without boundaries
boundaryLen = 0;
boundary = new byte[0];
}
else
{
boudaryStr = contentType.Substring(boundaryIndex + 1);
// remove spaces and double quotes, which may be added by some IP cameras
boudaryStr = boudaryStr.Trim(' ', '"');
boundary = encoding.GetBytes(boudaryStr);
boundaryLen = boundary.Length;
boundaryIsChecked = false;
}
}
else
{
throw new Exception("Invalid content type.");
}
// get response stream
stream = response.GetResponseStream( );
stream.ReadTimeout = requestTimeout;
// loop
while ((!stopEvent.WaitOne(0, false)) && (!reloadEvent.WaitOne(0, false)))
{
// check total read
if (total > bufSize - readSize)
{
total = pos = todo = 0;
}
// read next portion from stream
if ((read = stream.Read(buffer, total, readSize)) == 0)
{
throw new ApplicationException( );
}
total += read;
todo += read;
// increment received bytes counter
bytesReceived += read;
// do we need to check boundary ?
if ((boundaryLen != 0) && (!boundaryIsChecked))
{
// some IP cameras, like AirLink, claim that boundary is "myboundary",
// when it is really "--myboundary". this needs to be corrected.
pos = ByteArrayUtils.Find(buffer, boundary, 0, todo);
// continue reading if boudary was not found
if (pos == -1)
{
continue;
}
for (int i = pos - 1; i >= 0; i--)
{
byte ch = buffer[i];
if ((ch == (byte)'\n') || (ch == (byte)'\r'))
{
break;
}
boudaryStr = (char)ch + boudaryStr;
}
boundary = encoding.GetBytes(boudaryStr);
boundaryLen = boundary.Length;
boundaryIsChecked = true;
}
// search for image start
if ((align == 1) && (todo >= jpegMagicLength))
{
start = ByteArrayUtils.Find(buffer, jpegMagic, pos, todo);
if (start != -1)
{
// found JPEG start
pos = start + jpegMagicLength;
todo = total - pos;
align = 2;
}
else
{
// delimiter not found
todo = jpegMagicLength - 1;
pos = total - todo;
}
}
// search for image end ( boundaryLen can be 0, so need extra check )
while ((align == 2) && (todo != 0) && (todo >= boundaryLen))
{
stop = ByteArrayUtils.Find(buffer,
(boundaryLen != 0) ? boundary : jpegMagic,
pos, todo);
if (stop != -1)
{
pos = stop;
todo = total - pos;
// increment frames counter
framesReceived++;
// image at stop
if ((NewFrame != null) && (!stopEvent.WaitOne(0, false)))
{
Bitmap bitmap = (Bitmap)Bitmap.FromStream(new MemoryStream(buffer, start, stop - start));
// notify client
NewFrame(this, new NewFrameEventArgs(bitmap));
// release the image
bitmap.Dispose( );
bitmap = null;
}
// shift array
pos = stop + boundaryLen;
todo = total - pos;
Array.Copy(buffer, pos, buffer, 0, todo);
total = todo;
pos = 0;
align = 1;
}
else
{
// boundary not found
if (boundaryLen != 0)
{
todo = boundaryLen - 1;
pos = total - todo;
}
else
{
todo = 0;
pos = total;
}
}
}
}
}
catch (ApplicationException)
{
// do nothing for Application Exception, which we raised on our own
// wait for a while before the next try
Thread.Sleep(250);
}
catch (ThreadAbortException)
{
break;
}
catch (Exception exception)
{
// provide information to clients
if (VideoSourceError != null)
{
VideoSourceError(this, new VideoSourceErrorEventArgs(exception.Message));
}
// wait for a while before the next try
Thread.Sleep(250);
}
finally
{
// abort request
if (request != null)
{
request.Abort( );
request = null;
}
// close response stream
if (stream != null)
{
stream.Close( );
stream = null;
}
// close response
if (response != null)
{
response.Close( );
response = null;
}
}
// need to stop ?
if (stopEvent.WaitOne(0, false))
{
break;
}
}
if (PlayingFinished != null)
{
PlayingFinished(this, ReasonToFinishPlaying.StoppedByUser);
}
}
// Worker thread
private void WorkerThread( )
{
// buffer to read stream
byte[] buffer = new byte[bufSize];
// JPEG magic number
byte[] jpegMagic = new byte[] { 0xFF, 0xD8, 0xFF };
int jpegMagicLength = 3;
while (true)
{
// reset reload event
reloadEvent.Reset( );
// HTTP web request
HttpWebRequest request = null;
// web responce
WebResponse response = null;
// stream for MJPEG downloading
Stream stream = null;
// boundary betweeen images
byte[] boundary = null;
// length of boundary
int boundaryLen;
// read amounts and positions
int read, todo = 0, total = 0, pos = 0, align = 1;
int start = 0, stop = 0;
// align
// 1 = searching for image start
// 2 = searching for image end
try
{
// create request
request = (HttpWebRequest)WebRequest.Create(source);
// set user agent
if (userAgent != null)
{
request.UserAgent = userAgent;
}
// set timeout value for the request
request.Timeout = requestTimeout;
// set login and password
if ((login != null) && (password != null) && (login != string.Empty))
{
request.Credentials = new NetworkCredential(login, password);
}
// set connection group name
if (useSeparateConnectionGroup)
{
request.ConnectionGroupName = GetHashCode( ).ToString( );
}
// get response
response = request.GetResponse( );
// check content type
string contentType = response.ContentType;
string[] contentTypeArray = contentType.Split('/');
if (!((contentTypeArray[0] == "multipart") && (contentType.Contains("mixed"))))
{
// provide information to clients
if (VideoSourceError != null)
{
VideoSourceError(this, new VideoSourceErrorEventArgs("Invalid content type"));
}
request.Abort( );
request = null;
response.Close( );
response = null;
// need to stop ?
if (stopEvent.WaitOne(0, true))
{
break;
}
continue;
}
// get boundary
ASCIIEncoding encoding = new ASCIIEncoding( );
string boudaryStr = contentType.Substring(contentType.IndexOf("boundary=", 0) + 9);
boundary = encoding.GetBytes(boudaryStr);
boundaryLen = boundary.Length;
bool boundaryIsChecked = false;
// get response stream
stream = response.GetResponseStream( );
// loop
while ((!stopEvent.WaitOne(0, true)) && (!reloadEvent.WaitOne(0, true)))
{
// check total read
if (total > bufSize - readSize)
{
total = pos = todo = 0;
}
// read next portion from stream
if ((read = stream.Read(buffer, total, readSize)) == 0)
{
throw new ApplicationException( );
}
total += read;
todo += read;
// increment received bytes counter
bytesReceived += read;
// do we need to check boundary ?
if (!boundaryIsChecked)
{
// some IP cameras, like AirLink, claim that boundary is "myboundary",
// when it is really "--myboundary". this needs to be corrected.
pos = ByteArrayUtils.Find(buffer, boundary, 0, todo);
// continue reading if boudary was not found
if (pos == -1)
{
continue;
}
for (int i = pos - 1; i >= 0; i--)
{
byte ch = buffer[i];
if ((ch == (byte)'\n') || (ch == (byte)'\r'))
{
break;
}
boudaryStr = (char)ch + boudaryStr;
}
boundary = encoding.GetBytes(boudaryStr);
boundaryLen = boundary.Length;
boundaryIsChecked = true;
}
// search for image start
if (align == 1)
{
start = ByteArrayUtils.Find(buffer, jpegMagic, pos, todo);
if (start != -1)
{
// found JPEG start
pos = start;
todo = total - pos;
align = 2;
}
else
{
// delimiter not found
todo = jpegMagicLength - 1;
pos = total - todo;
}
}
// search for image end
while ((align == 2) && (todo >= boundaryLen))
{
stop = ByteArrayUtils.Find(buffer, boundary, pos, todo);
if (stop != -1)
{
pos = stop;
todo = total - pos;
// increment frames counter
framesReceived++;
// image at stop
if ((NewFrame != null) && (!stopEvent.WaitOne(0, true)))
{
Bitmap bitmap = (Bitmap)Bitmap.FromStream(new MemoryStream(buffer, start, stop - start));
// notify client
NewFrame(this, new NewFrameEventArgs(bitmap));
// release the image
bitmap.Dispose( );
bitmap = null;
}
// shift array
pos = stop + boundaryLen;
todo = total - pos;
Array.Copy(buffer, pos, buffer, 0, todo);
total = todo;
pos = 0;
align = 1;
}
else
{
// boundary not found
todo = boundaryLen - 1;
pos = total - todo;
}
}
}
}
catch (WebException exception)
{
// provide information to clients
if (VideoSourceError != null)
{
VideoSourceError(this, new VideoSourceErrorEventArgs(exception.Message));
}
// wait for a while before the next try
Thread.Sleep(250);
}
catch (ApplicationException)
{
// wait for a while before the next try
Thread.Sleep(250);
}
catch (Exception)
{
}
finally
{
// abort request
if (request != null)
{
request.Abort( );
request = null;
}
// close response stream
if (stream != null)
{
stream.Close( );
stream = null;
}
// close response
if (response != null)
{
response.Close( );
response = null;
}
}
// need to stop ?
if (stopEvent.WaitOne(0, true))
{
break;
}
}
if (PlayingFinished != null)
{
PlayingFinished(this, ReasonToFinishPlaying.StoppedByUser);
}
}
private void WorkerThread()
{
byte[] buffer = new byte[0x80000];
byte[] needle = new byte[] { 0xff, 0xd8, 0xff };
int num = 3;
do
{
this.reloadEvent.Reset();
HttpWebRequest request = null;
WebResponse response = null;
Stream responseStream = null;
byte[] bytes = null;
int sourceLength = 0;
int offset = 0;
int startIndex = 0;
int num7 = 1;
int index = 0;
int num9 = 0;
try
{
request = (HttpWebRequest)WebRequest.Create(this.source);
if (this.userAgent != null)
{
request.UserAgent = this.userAgent;
}
request.Timeout = this.requestTimeout;
if (((this.login != null) && (this.password != null)) && (this.login != string.Empty))
{
request.Credentials = new NetworkCredential(this.login, this.password);
}
if (this.useSeparateConnectionGroup)
{
request.ConnectionGroupName = this.GetHashCode().ToString();
}
response = request.GetResponse();
string contentType = response.ContentType;
if ((contentType.Split(new char[] { '/' })[0] != "multipart") || !contentType.Contains("mixed"))
{
if (this.VideoSourceError != null)
{
this.VideoSourceError(this, new VideoSourceErrorEventArgs("Invalid content type"));
}
throw new ApplicationException();
}
int num10 = contentType.IndexOf("boundary", 0);
if (num10 != -1)
{
num10 = contentType.IndexOf("=", (int)(num10 + 8));
}
if (num10 == -1)
{
if (this.VideoSourceError != null)
{
this.VideoSourceError(this, new VideoSourceErrorEventArgs("Invalid content type"));
}
throw new ApplicationException();
}
string s = contentType.Substring(num10 + 1).Trim(new char[] { ' ', '"' });
ASCIIEncoding encoding = new ASCIIEncoding();
bytes = encoding.GetBytes(s);
int length = bytes.Length;
bool flag = false;
responseStream = response.GetResponseStream();
while (!this.stopEvent.WaitOne(0, true) && !this.reloadEvent.WaitOne(0, true))
{
if (offset > 0x7fc00)
{
offset = startIndex = sourceLength = 0;
}
int num3 = responseStream.Read(buffer, offset, 0x400);
if (num3 == 0)
{
throw new ApplicationException();
}
offset += num3;
sourceLength += num3;
this.bytesReceived += num3;
if (flag)
{
goto Label_028A;
}
startIndex = ByteArrayUtils.Find(buffer, bytes, 0, sourceLength);
if (startIndex == -1)
{
continue;
}
for (int i = startIndex - 1; i >= 0; i--)
{
byte num12 = buffer[i];
switch (num12)
{
case 10:
case 13:
goto Label_0276;
}
s = ((char)num12) + s;
}
Label_0276:
bytes = encoding.GetBytes(s);
length = bytes.Length;
flag = true;
Label_028A:
if (num7 == 1)
{
index = ByteArrayUtils.Find(buffer, needle, startIndex, sourceLength);
if (index != -1)
{
startIndex = index;
sourceLength = offset - startIndex;
num7 = 2;
}
else
{
sourceLength = num - 1;
startIndex = offset - sourceLength;
}
}
while ((num7 == 2) && (sourceLength >= length))
{
num9 = ByteArrayUtils.Find(buffer, bytes, startIndex, sourceLength);
if (num9 != -1)
{
startIndex = num9;
sourceLength = offset - startIndex;
this.framesReceived++;
if ((this.NewFrame != null) && !this.stopEvent.WaitOne(0, true))
{
Bitmap frame = (Bitmap)Image.FromStream(new MemoryStream(buffer, index, num9 - index));
this.NewFrame(this, new NewFrameEventArgs(frame));
frame.Dispose();
frame = null;
}
startIndex = num9 + length;
sourceLength = offset - startIndex;
Array.Copy(buffer, startIndex, buffer, 0, sourceLength);
offset = sourceLength;
startIndex = 0;
num7 = 1;
}
else
{
sourceLength = length - 1;
startIndex = offset - sourceLength;
}
}
}
}
catch (WebException exception)
{
if (this.VideoSourceError != null)
{
this.VideoSourceError(this, new VideoSourceErrorEventArgs(exception.Message));
}
Thread.Sleep(250);
}
catch (ApplicationException)
{
Thread.Sleep(250);
}
catch (Exception)
{
}
finally
{
if (request != null)
{
request.Abort();
request = null;
}
if (responseStream != null)
{
responseStream.Close();
responseStream = null;
}
if (response != null)
{
response.Close();
response = null;
}
}
}while (!this.stopEvent.WaitOne(0, true));
if (this.PlayingFinished != null)
{
this.PlayingFinished(this, ReasonToFinishPlaying.StoppedByUser);
}
}
private void WorkerThread()
{
byte[] array = new byte[1048576];
byte[] array2 = new byte[3]
{
255,
216,
255
};
int num = 3;
ASCIIEncoding aSCIIEncoding = new ASCIIEncoding();
while (!stopEvent.WaitOne(0, exitContext: false))
{
reloadEvent.Reset();
HttpWebRequest httpWebRequest = null;
WebResponse webResponse = null;
Stream stream = null;
byte[] array3 = null;
string text = null;
bool flag = false;
int num2 = 0;
int num3 = 0;
int num4 = 0;
int num5 = 1;
int num6 = 0;
int num7 = 0;
try
{
httpWebRequest = (HttpWebRequest)WebRequest.Create(source);
if (userAgent != null)
{
httpWebRequest.UserAgent = userAgent;
}
if (proxy != null)
{
httpWebRequest.Proxy = proxy;
}
httpWebRequest.Timeout = requestTimeout;
if (login != null && password != null && login != string.Empty)
{
httpWebRequest.Credentials = new NetworkCredential(login, password);
}
if (useSeparateConnectionGroup)
{
httpWebRequest.ConnectionGroupName = GetHashCode().ToString();
}
if (forceBasicAuthentication)
{
string s = $"{login}:{password}";
s = Convert.ToBase64String(Encoding.Default.GetBytes(s));
httpWebRequest.Headers["Authorization"] = "Basic " + s;
}
webResponse = httpWebRequest.GetResponse();
string contentType = webResponse.ContentType;
string[] array4 = contentType.Split('/');
int num8;
if (array4[0] == "application" && array4[1] == "octet-stream")
{
num8 = 0;
array3 = new byte[0];
}
else
{
if (!(array4[0] == "multipart") || !contentType.Contains("mixed"))
{
throw new Exception("Invalid content type.");
}
int num9 = contentType.IndexOf("boundary", 0);
if (num9 != -1)
{
num9 = contentType.IndexOf("=", num9 + 8);
}
if (num9 == -1)
{
num8 = 0;
array3 = new byte[0];
}
else
{
text = contentType.Substring(num9 + 1);
text = text.Trim(' ', '"');
array3 = aSCIIEncoding.GetBytes(text);
num8 = array3.Length;
flag = false;
}
}
stream = webResponse.GetResponseStream();
stream.ReadTimeout = requestTimeout;
while (!stopEvent.WaitOne(0, exitContext: false) && !reloadEvent.WaitOne(0, exitContext: false))
{
if (num3 > 1047552)
{
num3 = (num4 = (num2 = 0));
}
int num10;
if ((num10 = stream.Read(array, num3, 1024)) == 0)
{
throw new ApplicationException();
}
num3 += num10;
num2 += num10;
bytesReceived += num10;
if (num8 != 0 && !flag)
{
num4 = ByteArrayUtils.Find(array, array3, 0, num2);
if (num4 == -1)
{
continue;
}
for (int num11 = num4 - 1; num11 >= 0; num11--)
{
byte b = array[num11];
if (b == 10 || b == 13)
{
break;
}
text = (char)b + text;
}
array3 = aSCIIEncoding.GetBytes(text);
num8 = array3.Length;
flag = true;
}
if (num5 == 1 && num2 >= num)
{
num6 = ByteArrayUtils.Find(array, array2, num4, num2);
if (num6 != -1)
{
num4 = num6 + num;
num2 = num3 - num4;
num5 = 2;
}
else
{
num2 = num - 1;
num4 = num3 - num2;
}
}
while (num5 == 2 && num2 != 0 && num2 >= num8)
{
num7 = ByteArrayUtils.Find(array, (num8 != 0) ? array3 : array2, num4, num2);
if (num7 != -1)
{
num4 = num7;
num2 = num3 - num4;
framesReceived++;
if (this.NewFrame != null && !stopEvent.WaitOne(0, exitContext: false))
{
Bitmap bitmap = (Bitmap)Image.FromStream(new MemoryStream(array, num6, num7 - num6));
this.NewFrame(this, new NewFrameEventArgs(bitmap));
bitmap.Dispose();
bitmap = null;
}
num4 = num7 + num8;
num2 = num3 - num4;
Array.Copy(array, num4, array, 0, num2);
num3 = num2;
num4 = 0;
num5 = 1;
}
else if (num8 != 0)
{
num2 = num8 - 1;
num4 = num3 - num2;
}
else
{
num2 = 0;
num4 = num3;
}
}
}
}
catch (ApplicationException)
{
Thread.Sleep(250);
}
catch (ThreadAbortException)
{
break;
}
catch (Exception ex3)
{
if (this.VideoSourceError != null)
{
this.VideoSourceError(this, new VideoSourceErrorEventArgs(ex3.Message));
}
Thread.Sleep(250);
}
finally
{
if (httpWebRequest != null)
{
httpWebRequest.Abort();
httpWebRequest = null;
}
if (stream != null)
{
stream.Close();
stream = null;
}
if (webResponse != null)
{
webResponse.Close();
webResponse = null;
}
}
if (stopEvent.WaitOne(0, exitContext: false))
{
break;
}
}
if (this.PlayingFinished != null)
{
this.PlayingFinished(this, ReasonToFinishPlaying.StoppedByUser);
}
}
