#include <SERNonceHelper.hxx>

Inheritance diagram for resip::SERNonceHelper:

Collaboration diagram for resip::SERNonceHelper:

Public Member Functions
	SERNonceHelper (int serOffset)
	SERNonceHelper implements the makeNonce function in the same way as SIP Express Router (SER) - http://www.iptel.org/ser.
virtual	~SERNonceHelper ()
void	setPrivateKey (const Data &privateKey)
Data	makeNonce (const SipMessage &request, const Data &timestamp)
Nonce	parseNonce (const Data &nonce)
Private Attributes
Data	privateKey
int	serOffset

Detailed Description

Definition at line 23 of file SERNonceHelper.hxx.

Constructor & Destructor Documentation

SERNonceHelper::SERNonceHelper ( int serOffset )

SERNonceHelper implements the makeNonce function in the same way as SIP Express Router (SER) - http://www.iptel.org/ser.

To operate a farm/cluster of UASs/proxies, you must: a) make sure the clocks are sychronized (using ntpd for instance) b) use the same privateKey value on every instance of the application c) call Helper::setNonceHelper(mySERNonceHelper) to over-ride the default implementation of NonceHelper in the reSIProcate stack

Definition at line 24 of file SERNonceHelper.cxx.

References resip::Random::getRandomHex(), and privateKey.

                                            : serOffset(serOffset)
{
   //privateKey = Data("asdfklsadflkj");
   privateKey = Random::getRandomHex(24);
}

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SERNonceHelper::~SERNonceHelper ( ) [virtual]

Definition at line 30 of file SERNonceHelper.cxx.

{
}

Member Function Documentation

Data SERNonceHelper::makeNonce	(	const SipMessage &	request,
		const Data &	timestamp
	)		`[virtual]`

Implements resip::NonceHelper.

Definition at line 41 of file SERNonceHelper.cxx.

References resip::Data::append(), resip::Data::convertInt(), resip::Helper::integer2hex(), resip::Data::md5(), resip::Data::Preallocate, privateKey, and serOffset.

{
   char buf[8];
   Data md5buf(8, Data::Preallocate);
   Data nonce(40, Data::Preallocate);
   int ts = timestamp.convertInt() + serOffset;
   Helper::integer2hex(buf, ts);
   md5buf.append(buf, 8);
   nonce.append(buf, 8);
   md5buf += privateKey;
   nonce += md5buf.md5(); 
   return nonce;
}

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NonceHelper::Nonce SERNonceHelper::parseNonce ( const Data & nonce ) [virtual]

Implements resip::NonceHelper.

Definition at line 56 of file SERNonceHelper.cxx.

References resip::Data::data(), resip::Helper::hex2integer(), serOffset, and resip::Data::size().

{
   if(nonce.size() != 40)
   {
      return SERNonceHelper::Nonce(0);
   }
   const char *s = nonce.data();
   unsigned int ts = Helper::hex2integer(s) - serOffset;
   return SERNonceHelper::Nonce(ts); 
}