public void ReceiveCallback(IAsyncResult ar)
{
SIPConnection sipTLSConnection = (SIPConnection)ar.AsyncState;
if (sipTLSConnection != null && sipTLSConnection.SIPStream != null && sipTLSConnection.SIPStream.CanRead)
{
try
{
int bytesRead = sipTLSConnection.SIPStream.EndRead(ar);
if (sipTLSConnection.SocketReadCompleted(bytesRead))
{
sipTLSConnection.SIPStream.BeginRead(sipTLSConnection.SocketBuffer, sipTLSConnection.SocketBufferEndPosition, MaxSIPTCPMessageSize - sipTLSConnection.SocketBufferEndPosition, new AsyncCallback(ReceiveCallback), sipTLSConnection);
}
}
catch (SocketException sockExcp) // Occurs if the remote end gets disconnected.
{
logger.LogWarning("SocketException SIPTLSChannel ReceiveCallback. " + sockExcp);
}
catch (Exception excp)
{
logger.LogWarning("Exception SIPTLSChannel ReceiveCallback. " + excp);
SIPTLSSocketDisconnected(sipTLSConnection.RemoteEndPoint);
}
}
}
private void SocketRead_Completed(object sender, SocketAsyncEventArgs e)
{
try
{
if (m_sipConnection.SocketReadCompleted(e.BytesTransferred))
{
SocketAsyncEventArgs receiveArgs = new SocketAsyncEventArgs();
receiveArgs.SetBuffer(m_sipConnection.SocketBuffer, m_sipConnection.SocketBufferEndPosition, MaxSIPTCPMessageSize - m_sipConnection.SocketBufferEndPosition);
receiveArgs.Completed += SocketRead_Completed;
if (receiveArgs != null)
{
m_socket.ReceiveAsync(receiveArgs);
}
}
}
catch (Exception excp)
{
logger.Error("Exception SilverlightTCPSIPChannel SocketRead_Completed. " + excp.Message);
throw;
}
}
public void TestSocketReadWithTwoMessagesAndBytesToSkipTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string testReceive =
@" SUBSCRIBE sip:[email protected] SIP/2.0
Via: SIP/2.0/TCP 10.1.1.5:62647;branch=z9hG4bKa58b912c426f415daa887289efda50cd;rport
To: <sip:[email protected]>
From: <sip:[email protected]>;tag=1902440575
Call-ID: 1b569032-d1e4-4869-be9f-67d4ba8a4e3a
CSeq: 3 SUBSCRIBE
Contact: <sip:10.1.1.5:62647;transport=tcp>
Max-Forwards: 70
Expires: 600
Content-Length: 15
Content-Type: text/text
Event: dialog
includesdp=true
SUBSCRIBE sip:[email protected] SIP/2.0
Via: SIP/2.0/TCP 10.1.1.5:62647;branch=z9hG4bKa58b912c426f415daa887289efda50cd;rport
To: <sip:[email protected]>
From: <sip:[email protected]>;tag=1902440575
Call-ID: 1b569032-d1e4-4869-be9f-67d4ba8a4e3a
CSeq: 3 SUBSCRIBE
SUBSCRIBE sip:[email protected]";
byte[] testReceiveBytes = UTF8Encoding.UTF8.GetBytes(testReceive);
SIPConnection testConnection = new SIPConnection(null, (Stream)null, new IPEndPoint(IPAddress.Loopback, 0), SIPProtocolsEnum.tcp, SIPConnectionsEnum.Caller);
int sipMessages = 0;
testConnection.SIPMessageReceived += (chan, ep, buffer) => { sipMessages++; };
Array.Copy(testReceiveBytes, testConnection.SocketBuffer, testReceiveBytes.Length);
bool result = testConnection.SocketReadCompleted(testReceiveBytes.Length);
string remainingBytes = Encoding.UTF8.GetString(testConnection.SocketBuffer, 0, testConnection.SocketBufferEndPosition);
Console.WriteLine("SocketBufferEndPosition=" + testConnection.SocketBufferEndPosition + ".");
Console.WriteLine("SocketBuffer=" + remainingBytes + ".");
Assert.IsTrue(result, "The result from processing the socket read should have been true.");
Assert.IsTrue(sipMessages == 2, "The number of SIP messages parsed was incorrect.");
Assert.IsTrue(testConnection.SocketBufferEndPosition == 26, "The receive buffer end position was incorrect.");
Assert.IsTrue(remainingBytes == "SUBSCRIBE sip:[email protected]", "The leftover bytes in the socket buffer were incorrect.");
}
public void TestSocketReadSingleMessageTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
string testReceive =
@"SUBSCRIBE sip:[email protected] SIP/2.0
Via: SIP/2.0/TCP 10.1.1.5:62647;branch=z9hG4bKa58b912c426f415daa887289efda50cd;rport
To: <sip:[email protected]>
From: <sip:[email protected]>;tag=1902440575
Call-ID: 1b569032-d1e4-4869-be9f-67d4ba8a4e3a
CSeq: 3 SUBSCRIBE
Contact: <sip:10.1.1.5:62647;transport=tcp>
Max-Forwards: 70
Expires: 600
Content-Length: 15
Content-Type: text/text
Event: dialog
includesdp=true";
byte[] testReceiveBytes = UTF8Encoding.UTF8.GetBytes(testReceive);
SIPConnection testConnection = new SIPConnection(null, (Stream)null, null, SIPProtocolsEnum.tcp, SIPConnectionsEnum.Caller);
Array.Copy(testReceiveBytes, testConnection.SocketBuffer, testReceiveBytes.Length);
bool result = testConnection.SocketReadCompleted(testReceiveBytes.Length);
Assert.IsTrue(result, "The result of processing the receive should have been true.");
Assert.IsTrue(testConnection.SocketBufferEndPosition == 0, "The receive buffer end position should have been 0.");
}
