public void ExtractHeadersUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
string sipMsg =
"From: <sip:[email protected]>;tag=0477183750" + m_CRLF +
"To: <sip:[email protected]>;tag=414dedfe" + m_CRLF +
"CSeq: 1 REGISTER" + m_CRLF +
"Call-ID: 438676792abe47328fc557da2d84d0ee" + m_CRLF +
"Via: SIP/2.0/UDP 192.168.1.102:7246;branch=z9hG4bK92460620adf84edab2341899a3453f79;received=124.168.235.200;rport=10552" + m_CRLF +
"Server: Huawei SoftX3000 R006B03D" + m_CRLF +
"Refer-To: Test Refer-To" + m_CRLF +
"Authentication-Info: Test Authentication-Info" + m_CRLF +
"WWW-Authenticate: Digest realm=\"huawei\"," + m_CRLF +
" nonce=\"248e4b4457f252ae53c859bfe03c4f93\",domain=\"sip:huawei.com\"," + m_CRLF +
" stale=false,algorithm=MD5" + m_CRLF +
"Content-Length: 0" + m_CRLF + m_CRLF;
logger.LogDebug("Original SIP Headers:\n" + sipMsg);
string[] headersCollection = SIPHeader.SplitHeaders(sipMsg);
SIPHeader sipHeader = SIPHeader.ParseSIPHeaders(headersCollection);
Assert.Equal("Test Refer-To", sipHeader.ReferTo);
Assert.Equal("Test Authentication-Info", sipHeader.AuthenticationInfo);
logger.LogDebug("-----------------------------------------");
}
public void MultipleContactHeadersUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
string sipMsg =
"From: <sip:[email protected]>;tag=0477183750" + m_CRLF +
"To: <sip:[email protected]>;tag=414dedfe" + m_CRLF +
"CSeq: 1 REGISTER" + m_CRLF +
"Contact: \"Joe Bloggs\" <sip:[email protected]>;expires=0" + m_CRLF +
"Call-ID: 438676792abe47328fc557da2d84d0ee" + m_CRLF +
"Via: SIP/2.0/UDP 192.168.1.102:7246;branch=z9hG4bK92460620adf84edab2341899a3453f79;received=124.168.235.200;rport=10552" + m_CRLF +
"Server: Huawei SoftX3000 R006B03D" + m_CRLF +
"WWW-Authenticate: Digest realm=\"huawei\"," + m_CRLF +
" nonce=\"248e4b4457f252ae53c859bfe03c4f93\",domain=\"sip:huawei.com\"," + m_CRLF +
" stale=false,algorithm=MD5" + m_CRLF +
"Contact: \"Jane Doe\" <sip:[email protected]>" + m_CRLF +
"Content-Length: 0" + m_CRLF + m_CRLF;
logger.LogDebug("Original SIP Headers:\n" + sipMsg);
string[] headersCollection = SIPHeader.SplitHeaders(sipMsg);
SIPHeader sipHeader = SIPHeader.ParseSIPHeaders(headersCollection);
Assert.True(sipHeader.Contact.Count == 2, "The SIP header had the wrong number of Contacts.");
Assert.True(sipHeader.Contact[0].ToString() == "\"Joe Bloggs\" <sip:[email protected]>;expires=0", "The first Contact header was not parsed correctly.");
Assert.True(sipHeader.Contact[1].ToString() == "\"Jane Doe\" <sip:[email protected]>", "The second Contact header was not parsed correctly.");
logger.LogDebug("-----------------------------------------");
}
public void HuaweiRegisterUnitTest()
{
Console.WriteLine("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
string sipMsg =
"From: <sip:[email protected]>;tag=0477183750" + m_CRLF +
"To: <sip:[email protected]>;tag=414dedfe" + m_CRLF +
"CSeq: 1 REGISTER" + m_CRLF +
"Call-ID: 438676792abe47328fc557da2d84d0ee" + m_CRLF +
"Via: SIP/2.0/UDP 192.168.1.102:7246;branch=z9hG4bK92460620adf84edab2341899a3453f79;received=124.168.235.200;rport=10552" + m_CRLF +
"Server: Huawei SoftX3000 R006B03D" + m_CRLF +
"WWW-Authenticate: Digest realm=\"huawei\"," + m_CRLF +
" nonce=\"248e4b4457f252ae53c859bfe03c4f93\",domain=\"sip:huawei.com\"," + m_CRLF +
" stale=false,algorithm=MD5" + m_CRLF +
"Content-Length: 0" + m_CRLF + m_CRLF;
Console.WriteLine("Original SIP Headers:\n" + sipMsg);
string[] headersCollection = SIPHeader.SplitHeaders(sipMsg);
SIPHeader sipHeader = SIPHeader.ParseSIPHeaders(headersCollection);
Console.WriteLine(sipHeader.ToString());
Console.WriteLine(sipHeader.AuthenticationHeader.ToString());
Assert.IsTrue(Regex.Match(sipHeader.AuthenticationHeader.ToString(), "nonce").Success, "The WWW-Authenticate header was not correctly parsed across multpiple lines.");
Console.WriteLine("-----------------------------------------");
}
public static SIPMessage ParseSIPMessage(string message, SIPEndPoint localSIPEndPoint, SIPEndPoint remoteSIPEndPoint)
{
try
{
SIPMessage sipMessage = new SIPMessage();
sipMessage.LocalSIPEndPoint = localSIPEndPoint;
sipMessage.RemoteSIPEndPoint = remoteSIPEndPoint;
sipMessage.RawMessage = message;
int endFistLinePosn = message.IndexOf(m_CRLF);
if (endFistLinePosn != -1)
{
sipMessage.FirstLine = message.Substring(0, endFistLinePosn);
if (sipMessage.FirstLine.Substring(0, 3) == SIP_RESPONSE_PREFIX)
{
sipMessage.SIPMessageType = SIPMessageTypesEnum.Response;
}
else
{
sipMessage.SIPMessageType = SIPMessageTypesEnum.Request;
}
int endHeaderPosn = message.IndexOf(m_CRLF + m_CRLF);
if (endHeaderPosn == -1)
{
// Assume flakey implementation if message does not contain the required CRLFCRLF sequence and treat the message as having no body.
string headerString = message.Substring(endFistLinePosn + 2, message.Length - endFistLinePosn - 2);
sipMessage.SIPHeaders = SIPHeader.SplitHeaders(headerString); //Regex.Split(headerString, m_CRLF);
}
else
{
string headerString = message.Substring(endFistLinePosn + 2, endHeaderPosn - endFistLinePosn - 2);
sipMessage.SIPHeaders = SIPHeader.SplitHeaders(headerString); //Regex.Split(headerString, m_CRLF);
if (message.Length > endHeaderPosn + 4)
{
sipMessage.Body = message.Substring(endHeaderPosn + 4);
}
}
return(sipMessage);
}
else
{
logger.Warn("Error ParseSIPMessage, there were no end of line characters in the string being parsed.");
return(null);
}
}
catch (Exception excp)
{
logger.Error("Exception ParseSIPMessage. " + excp.Message + "\nSIP Message=" + message + ".");
return(null);
}
}
public void ParseAMulitLineHeaderTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
string mulitLineHeader =
"Via: SIP/2.0/UDP 213.168.225.135:5060;branch=z9hG4bK8Z4EIWBeY45fRGwC0qIeu/xpw3A=" + m_CRLF +
"Via: SIP/2.0/UDP 192.168.1.2:5065;received=220.240.255.198:64091;branch=z9hG4bK4E0728C26A0640E7830D7C9179D08D67" + m_CRLF +
"Record-Route: <sip:213.168.225.133:5060;lr>," + m_CRLF +
" <sip:220.240.255.198:64091;lr>" + m_CRLF +
"From: bluesipd <sip:bluesipd@bluesipd:5065>;tag=457825353" + m_CRLF +
"To: <sip:303@bluesipd>;tag=as02a64a42" + m_CRLF +
"Call-ID: [email protected]" + m_CRLF +
"CSeq: 38002 INVITE" + m_CRLF +
"Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY" + m_CRLF +
"Contact: <sip:[email protected]>" + m_CRLF +
"Content-Type: application/sdp" + m_CRLF +
"Content-Length: 350" + m_CRLF;
logger.LogDebug("Original SIP Headers:\n" + mulitLineHeader);
string[] headersCollection = SIPHeader.SplitHeaders(mulitLineHeader);
foreach (string headerStr in headersCollection)
{
logger.LogDebug("Header => " + headerStr + ".");
}
Assert.True(headersCollection.Length == 12, "The headers were not split properly.");
logger.LogDebug("");
SIPHeader sipHeader = SIPHeader.ParseSIPHeaders(headersCollection);
logger.LogDebug("Parsed SIP Headers:\n" + sipHeader.ToString());
Assert.True(sipHeader.RecordRoutes.Length == 2, "An incorrect number of record route entries was extracted, number was " + sipHeader.RecordRoutes.Length + ".");
SIPRoute topRoute = sipHeader.RecordRoutes.PopRoute();
Assert.True(topRoute.Host == "213.168.225.133:5060", "The top record route was not parsed correctly.");
logger.LogDebug("---------------------------------------------------");
}
/// <summary>
/// Attempts to parse a SIP message from a string containing a single SIP request or response.
/// </summary>
/// <param name="message">The string to parse.</param>
/// <param name="localSIPEndPoint">The end point the message was received on.</param>
/// <param name="remoteSIPEndPoint">The end point the message was received from.</param>
/// <returns>If successful a SIP message or null if not.</returns>
public static SIPMessageBuffer ParseSIPMessage(string message, SIPEndPoint localSIPEndPoint,
SIPEndPoint remoteSIPEndPoint)
{
try
{
SIPMessageBuffer sipMessage = new SIPMessageBuffer();
sipMessage.LocalSIPEndPoint = localSIPEndPoint;
sipMessage.RemoteSIPEndPoint = remoteSIPEndPoint;
// For connection oriented transports the same connection should be used for responses and subsequent requests.
if (sipMessage.LocalSIPEndPoint != null && remoteSIPEndPoint.ConnectionID != null)
{
sipMessage.LocalSIPEndPoint.ConnectionID = remoteSIPEndPoint.ConnectionID;
}
sipMessage.RawMessage = message;
int endFistLinePosn = message.IndexOf(m_CRLF);
if (endFistLinePosn != -1)
{
sipMessage.FirstLine = message.Substring(0, endFistLinePosn);
if (sipMessage.FirstLine.Substring(0, 3) == SIP_RESPONSE_PREFIX)
{
sipMessage.SIPMessageType = SIPMessageTypesEnum.Response;
}
else
{
sipMessage.SIPMessageType = SIPMessageTypesEnum.Request;
}
int endHeaderPosn = message.IndexOf(m_CRLF + m_CRLF);
if (endHeaderPosn == -1)
{
// Assume flakey implementation if message does not contain the required CRLFCRLF sequence and treat the message as having no body.
string headerString =
message.Substring(endFistLinePosn + 2, message.Length - endFistLinePosn - 2);
sipMessage.SIPHeaders = SIPHeader.SplitHeaders(headerString);
}
else
{
string headerString =
message.Substring(endFistLinePosn + 2, endHeaderPosn - endFistLinePosn - 2);
sipMessage.SIPHeaders = SIPHeader.SplitHeaders(headerString);
if (message.Length > endHeaderPosn + 4)
{
sipMessage.Body = message.Substring(endHeaderPosn + 4);
}
}
return(sipMessage);
}
else
{
Logger.Logger.Warn(
"Error ParseSIPMessage, there were no end of line characters in the string being parsed.");
return(null);
}
}
catch (Exception excp)
{
Logger.Logger.Error("Exception ParseSIPMessage. ->" + excp.Message + "->SIP Message=" + message + ".");
return(null);
}
}
/// <summary>
/// Attempts to parse a SIP message from a single buffer that can only contain a single message.
/// </summary>
/// <param name="buffer">The buffer that will be parsed for a SIP message.</param>
/// <param name="sipBodyEncoding">SIP payload encoding</param>
/// <param name="localSIPEndPoint">The end point the message was received on.</param>
/// <param name="remoteSIPEndPoint">The end point the message was received from.</param>
/// <param name="sipEncoding">SIP protocol encoding, according to RFC should be UTF-8 </param>
/// <returns>If successful a SIP message or null if not.</returns>
public static SIPMessageBuffer ParseSIPMessage(
byte[] buffer,
Encoding sipEncoding,
Encoding sipBodyEncoding,
SIPEndPoint localSIPEndPoint,
SIPEndPoint remoteSIPEndPoint)
{
if (buffer == null || buffer.Length < m_minFirstLineLength)
{
// Ignore.
return(null);
}
else if (buffer.Length > SIPConstants.SIP_MAXIMUM_RECEIVE_LENGTH)
{
throw new ApplicationException("SIP message received that exceeded the maximum allowed message length, ignoring.");
}
else if (!BufferUtils.HasString(buffer, 0, buffer.Length, SIP_MESSAGE_IDENTIFIER, m_CRLF))
{
// Message does not contain "SIP" anywhere on the first line, ignore.
return(null);
}
else
{
var sipMessage = new SIPMessageBuffer(sipEncoding, sipBodyEncoding);
sipMessage.RawBuffer = buffer;
sipMessage.LocalSIPEndPoint = localSIPEndPoint;
sipMessage.RemoteSIPEndPoint = remoteSIPEndPoint;
// For connection oriented transports the same connection should be used for responses and subsequent requests.
if (sipMessage.LocalSIPEndPoint != null && remoteSIPEndPoint.ConnectionID != null)
{
sipMessage.LocalSIPEndPoint.ConnectionID = remoteSIPEndPoint.ConnectionID;
}
string message = sipEncoding.GetString(buffer);
int endFistLinePosn = message.IndexOf(m_CRLF);
if (endFistLinePosn != -1)
{
sipMessage.FirstLine = message.Substring(0, endFistLinePosn);
if (sipMessage.FirstLine.Substring(0, 3) == SIP_RESPONSE_PREFIX)
{
sipMessage.SIPMessageType = SIPMessageTypesEnum.Response;
}
else
{
sipMessage.SIPMessageType = SIPMessageTypesEnum.Request;
}
int endHeaderPosn = message.IndexOf(m_CRLF + m_CRLF);
if (endHeaderPosn == -1)
{
// Assume flakey implementation if message does not contain the required CRLFCRLF sequence and treat the message as having no body.
string headerString = message.Substring(endFistLinePosn + 2, message.Length - endFistLinePosn - 2);
sipMessage.SIPHeaders = SIPHeader.SplitHeaders(headerString);
}
else
{
string headerString = message.Substring(endFistLinePosn + 2, endHeaderPosn - endFistLinePosn - 2);
sipMessage.SIPHeaders = SIPHeader.SplitHeaders(headerString);
if (message.Length > endHeaderPosn + 4)
{
sipMessage.Body = new byte[buffer.Length - (endHeaderPosn + 4)];
Buffer.BlockCopy(buffer, endHeaderPosn + 4, sipMessage.Body, 0, buffer.Length - (endHeaderPosn + 4));
}
}
return(sipMessage);
}
else
{
logger.LogWarning("Error ParseSIPMessage, there were no end of line characters in the string being parsed.");
return(null);
}
}
}