/usr/include/resip/stack/SdpContents.hxx is in libresiprocate-1.9-dev 1.9.6-1.
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#define RESIP_SDPCONTENTS_HXX
#include <vector>
#include <list>
#include <iosfwd>
#include <memory>
#include "resip/stack/Contents.hxx"
#include "resip/stack/Uri.hxx"
#include "rutil/Data.hxx"
#include "rutil/HashMap.hxx"
#include "rutil/HeapInstanceCounter.hxx"
namespace resip
{
class SdpContents;
class AttributeHelper
{
public:
RESIP_HeapCount(AttributeHelper);
AttributeHelper();
AttributeHelper(const AttributeHelper& rhs);
AttributeHelper& operator=(const AttributeHelper& rhs);
bool exists(const Data& key) const;
const std::list<Data>& getValues(const Data& key) const;
EncodeStream& encode(EncodeStream& s) const;
void parse(ParseBuffer& pb);
void addAttribute(const Data& key, const Data& value = Data::Empty);
void clearAttribute(const Data& key);
private:
std::list<std::pair<Data, Data> > mAttributeList; // used to ensure attribute ordering on encode
HashMap< Data, std::list<Data> > mAttributes;
};
/**
@ingroup sip_payload
@brief Provides an interface to process and generate SDP bodies (MIME content-type application/sdp).
*
* This class performs both the parsing and generation of SDP. Most
* interaction with the SDP will be through the Session object,
* accessible through the session() method.
*
**/
class SdpContents : public Contents
{
public:
RESIP_HeapCount(SdpContents);
typedef enum {IP4=1, IP6} AddrType;
static const SdpContents Empty;
class Session;
/** @brief Provides an interface to read and modify SDP
* bodies.
*
**/
class Session
{
public:
class Medium;
/** @brief parameters for a specific codec are stored in this class.
*
**/
class Codec
{
public:
Codec() : mName(), mRate(0), mPayloadType(-1) {}
/** @brief full constructor for a Codec.
*
* This constructor allows a rate and optional parameters to be specified.
*
* @param name a string identifying the codec
* @param rate number of samples/sec
* @param parameters optional list of parameters for the codec
* @param encodingParameters optional encoding parameters for the codec
*
**/
Codec(const Data& name, unsigned long rate, const Data& parameters = Data::Empty, const Data& encodingParameters = Data::Empty);
/** @brief constructor for a Codec
*
* This constructor allows for payload type and rate parameters to be specified.
*
* @param name a string identifying the codec
* @param payloadType RTP payload type to associate with this codec
* @param rate sample rate of this codec
*
**/
Codec(const Data& name, int payloadType, int rate=8000);
Codec(const Codec& rhs);
Codec& operator=(const Codec& codec);
void parse(ParseBuffer& pb,
const SdpContents::Session::Medium& medium,
int payLoadType);
void assignFormatParameters(const SdpContents::Session::Medium& medium);
/** @brief returns the name of the codec.
* @return name of the codec
**/
const Data& getName() const;
/** @brief returns the name of the codec.
* @return name of the codec
**/
int getRate() const;
/** @brief returns the RTP payload type associated with this codec.
* @return RTP payload type
**/
int payloadType() const {return mPayloadType;}
/** @brief returns the RTP payload type associated with this codec.
* @return RTP payload type
**/
int& payloadType() {return mPayloadType;}
/** @brief returns the parameters associated with this codec
* @return codec parameters
**/
const Data& parameters() const {return mParameters;}
/** @brief returns the parameters associated with this codec
* @return codec parameters
**/
Data& parameters() {return mParameters;}
/** @brief returns the encoding parameters associated with this codec
* @return encoding parameters
**/
const Data& encodingParameters() const {return mEncodingParameters;}
/** @brief returns the encoding parameters associated with this codec
* @return encoding parameters
**/
Data& encodingParameters() {return mEncodingParameters;}
static const Codec ULaw_8000;
static const Codec ALaw_8000;
static const Codec G729_8000;
static const Codec G723_8000;
static const Codec GSM_8000;
static const Codec TelephoneEvent;
static const Codec FrfDialedDigit;
static const Codec CN;
typedef HashMap<int, Codec> CodecMap;
// "static" payload types as defined in RFC 3551.
// Maps payload type (number) to Codec definition.
static CodecMap& getStaticCodecs();
friend bool operator==(const Codec&, const Codec&);
private:
Data mName;
unsigned long mRate;
int mPayloadType;
Data mParameters; // Format parameters
Data mEncodingParameters;
static std::auto_ptr<CodecMap> sStaticCodecs;
static bool sStaticCodecsCreated;
friend EncodeStream& operator<<(EncodeStream&, const Codec&);
};
/** @brief processes o= lines in SDP
**/
class Origin
{
public:
/** @brief constructor for origin line
*
* @param user session user
* @param sessionId session ID
* @param version session version
* @param addr session address type (IP4 or IP6)
* @param address IP address of the session
*
**/
Origin(const Data& user,
const UInt64& sessionId,
const UInt64& version,
AddrType addr,
const Data& address);
Origin(const Origin& rhs);
Origin& operator=(const Origin& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief returns the session ID
* @return session ID
**/
const UInt64& getSessionId() const {return mSessionId;}
/** @brief returns the session ID
* @return session ID
**/
UInt64& getSessionId() { return mSessionId; }
/** @brief returns the session version
* @return session version
**/
const UInt64& getVersion() const {return mVersion;}
/** @brief returns the session version
* @return session version
**/
UInt64& getVersion() { return mVersion; }
/** @brief returns the user string for the session
* @return user string
**/
const Data& user() const {return mUser;}
/** @brief returns the user string for the session
* @return user string
**/
Data& user() {return mUser;}
/** @brief returns the session address type
*
* @return address type (IP4 or IP6)
**/
AddrType getAddressType() const {return mAddrType;}
/** @brief returns the session address type
*
* @return address type (IP4 or IP6)
**/
const Data& getAddress() const {return mAddress;}
/** @brief set the address for the session
*
* @param host IP address to associate with the session
* @param type type of addressing
**/
void setAddress(const Data& host, AddrType type = IP4);
private:
Origin();
Data mUser;
UInt64 mSessionId;
UInt64 mVersion;
AddrType mAddrType;
Data mAddress;
friend class Session;
};
/** @brief process e= (email) lines in the SDP
*
**/
class Email
{
public:
/** @brief constructor
*
* @param address email address
* @param freeText string describing the email address
*
**/
Email(const Data& address,
const Data& freeText);
Email(const Email& rhs);
Email& operator=(const Email& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief returns the email address
*
* @return email address
**/
const Data& getAddress() const {return mAddress;}
/** @brief returns the string describing the email address
*
* @return string
**/
const Data& getFreeText() const {return mFreeText;}
private:
Email() {}
Data mAddress;
Data mFreeText;
friend class Session;
};
/** @brief process p= (phone number) lines in the SDP
*
**/
class Phone
{
public:
/** @brief constructor
*
* @param number phone number
* @param freeText text string describing the phone number
*
**/
Phone(const Data& number,
const Data& freeText);
Phone(const Phone& rhs);
Phone& operator=(const Phone& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief return the phone number
*
* @return phone number
**/
const Data& getNumber() const {return mNumber;}
/** @brief return text string describing the phone number
*
* @return text string describing the phone number
**/
const Data& getFreeText() const {return mFreeText;}
private:
Phone() {}
Data mNumber;
Data mFreeText;
friend class Session;
};
/** @brief Process c= (connection) lines in SDP
*
* This line specifies the IP address and address type used in the session
*
**/
class Connection
{
public:
/** @brief constructor
*
* @param addType address type (IP4 or IP6)
* @param address IP address
* @param ttl time to live
*
**/
Connection(AddrType addType,
const Data& address,
unsigned long ttl = 0);
Connection(const Connection& rhs);
Connection& operator=(const Connection& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief returns the connection address type
*
* @return address type (IP4 or IP6)
**/
AddrType getAddressType() const {return mAddrType;}
/** @brief returns the connection address
*
* @return IP address
**/
const Data& getAddress() const {return mAddress;}
/** @brief set the address for the connection
*
* @param host IP address to associate with the connection
* @param type type of addressing
**/
void setAddress(const Data& host, AddrType type = IP4);
unsigned long ttl() const {return mTTL;}
unsigned long& ttl() {return mTTL;}
private:
Connection();
AddrType mAddrType;
Data mAddress;
unsigned long mTTL;
friend class Session;
friend class Medium;
};
/** @brief Process optional b= (bandwidth) lines in SDP
*
**/
class Bandwidth
{
public:
/** @brief Constructor
*
* @param modifier alphanumeric word giving the meaning of the bandwidth figure
* @param kbPerSecond number of kilobits per second
*
**/
Bandwidth(const Data& modifier,
unsigned long kbPerSecond);
Bandwidth(const Bandwidth& rhs);
Bandwidth& operator=(const Bandwidth& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief returns the modifier string
*
* @return modifier string
**/
const Data& modifier() const {return mModifier;}
/** @brief returns the modifier string
*
* @return modifier string
**/
Data modifier() {return mModifier;}
/** @brief returns the number of kilobits/second maximum bandwidth
*
* @return maximum bandwidth in kilobits/second
**/
unsigned long kbPerSecond() const {return mKbPerSecond;}
/** @brief returns the number of kilobits/second maximum bandwidth
*
* @return maximum bandwidth in kilobits/second
**/
unsigned long& kbPerSecond() {return mKbPerSecond;}
private:
Bandwidth() {}
Data mModifier;
unsigned long mKbPerSecond;
friend class Session;
friend class Medium;
};
/** @brief Process t= (start/stop time) lines in SDP
*
**/
class Time
{
public:
/** @brief Constructor
*
* The times given are the decimal part of an NTP timestamp. To convert these values to UNIX time,
* subtract decimal 2208988800 from the value.
*
* @param start start time
* @param stop stop time
*
**/
Time(unsigned long start,
unsigned long stop);
Time(const Time& rhs);
Time& operator=(const Time& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief Repeat time. Not used for SIP
*
**/
class Repeat
{
public:
Repeat(unsigned long interval,
unsigned long duration,
std::list<int> offsets);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
unsigned long getInterval() const {return mInterval;}
unsigned long getDuration() const {return mDuration;}
const std::list<int> getOffsets() const {return mOffsets;}
private:
Repeat() {}
unsigned long mInterval;
unsigned long mDuration;
std::list<int> mOffsets;
friend class Time;
};
void addRepeat(const Repeat& repeat);
/** @brief return the start time
*
* @return start time
**/
unsigned long getStart() const {return mStart;}
/** @brief return the stop time
*
* @return stop time
**/
unsigned long getStop() const {return mStop;}
const std::list<Repeat>& getRepeats() const {return mRepeats;}
private:
Time() {}
unsigned long mStart;
unsigned long mStop;
std::list<Repeat> mRepeats;
friend class Session;
};
/** @brief process z= (timezone) lines
*
* Not used in SIP
*
**/
class Timezones
{
public:
/** @brief specify the time at which a timezone shift will occur and the offset, in seconds
@deprecated Unused
*/
class Adjustment
{
public:
Adjustment(unsigned long time,
int offset);
Adjustment(const Adjustment& rhs);
Adjustment& operator=(const Adjustment& rhs);
unsigned long time;
int offset;
};
Timezones();
Timezones(const Timezones& rhs);
Timezones& operator=(const Timezones& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
void addAdjustment(const Adjustment& adjusment);
const std::list<Adjustment>& getAdjustments() const {return mAdjustments; }
private:
std::list<Adjustment> mAdjustments;
};
/** @brief process k= (encryption key) line
*
**/
class Encryption
{
public:
typedef enum {NoEncryption = 0, Prompt, Clear, Base64, UriKey} KeyType;
Encryption(const KeyType& method,
const Data& key);
Encryption(const Encryption& rhs);
Encryption& operator=(const Encryption& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
const KeyType& getMethod() const {return mMethod;}
const KeyType& method() const {return mMethod;}
KeyType& method() {return mMethod;}
const Data& getKey() const {return mKey;}
const Data& key() const {return mKey;}
Data& key() {return mKey;}
Encryption();
private:
KeyType mMethod;
Data mKey;
};
/** @brief process m= (media announcement) blocks
*
**/
class Medium
{
public:
Medium();
Medium(const Medium& rhs);
/** @brief Constructor
*
* @param name media type (audio, video, application, data, etc.)
* @param port UDP port that will receive RTP
* @param multicast a misnomer. If multicast > 1, the next (multicast)
* even ports will convey RTP and the next (multicast) odd ports will
* convey corresponding RTCP
* @param protocol the transport used to convey the media. Usually "RTP/AVP" for SIP.
*
**/
Medium(const Data& name,
unsigned long port,
unsigned long multicast,
const Data& protocol);
Medium& operator=(const Medium& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief add a format identifier to the m= line
*
* This will need to be called for each codec used in the SDP.
*
* @param format format identifier
*
**/
void addFormat(const Data& format);
/** @brief set the media connection line. Optional if main SDP has c= line.
*
* @param connection connection line to use
**/
void setConnection(const Connection& connection);
/** @brief add a media connection line. Optional if main SDP has c= line.
*
* @param connection connection line to use
**/
void addConnection(const Connection& connection);
void setBandwidth(const Bandwidth& bandwidth);
void addBandwidth(const Bandwidth& bandwidth);
/** @brief add a media attribute line
*
* @param key attribute key
* @param value attribute value
*
**/
void addAttribute(const Data& key, const Data& value = Data::Empty);
/** @brief return the media type
*
* @return media type
**/
const Data& name() const {return mName;}
/** @brief return the media type
*
* @return media type
**/
Data& name() {return mName;}
/** @brief return the base port
*
* @return base port
**/
int port() const {return mPort;}
/** @brief return the base port
*
* @return base port
**/
unsigned long& port() {return mPort;}
/** @brief change the base port
*
* @param port new base port
*
**/
void setPort(int port);
/** @brief get the number of transport port pairs
*
* @return number of transport port pairs
**/
int multicast() const {return mMulticast;}
/** @brief get the number of transport port pairs
*
* @return number of transport port pairs
**/
unsigned long& multicast() {return mMulticast;}
/** @brief return the transport protocol
*
* @return transport protocol name
**/
const Data& protocol() const {return mProtocol;}
/** @brief return the transport protocol
*
* @return transport protocol name
**/
Data& protocol() {return mProtocol;}
// preferred codec/format interface
typedef std::list<Codec> CodecContainer;
/** preferred codec/format interface
@note internal storage of formats, rtpmap attributes, and
ftmp attributes are cleared out after codecs() is
called, since they get converted internally as Codec
objects
*/
const CodecContainer& codecs() const;
CodecContainer& codecs();
/** @brief remove all codecs from SDP **/
void clearCodecs();
/** @brief add a codec to the m= line
*
* @param codec codec to add
*
**/
void addCodec(const Codec& codec);
/** @brief return a list of codec formats
*
* These formats correspond to RTP payload type identifiers
*
* @note formats are cleared out and converted in codec
* objects when codecs() is called
* @return list of codec formats
**/
const std::list<Data>& getFormats() const {return mFormats;}
/** @brief get optional i= (information) line contents
*
* @return contents
**/
const Data& information() const {return mInformation;}
/** @brief get optional i= (information) line contents
*
* @return contents
**/
Data& information() {return mInformation;}
/** @brief get a list of bandwidth lines
*
* @return list of Bandwidth objects
**/
const std::list<Bandwidth>& bandwidths() const {return mBandwidths;}
std::list<Bandwidth>& bandwidths() {return mBandwidths;}
/** @brief get a list of Connection objects, including the Session's c= line.
*
* If the media's c= line is empty, use the Session's c= line.
*
* @return list of connections
**/
const std::list<Connection> getConnections() const;
/** @brief get a list of Connection objects from the m= section. Does not include session c= line.
*
* @return list of connections
**/
const std::list<Connection>& getMediumConnections() const {return mConnections;}
std::list<Connection>& getMediumConnections() {return mConnections;}
const Encryption& getEncryption() const {return mEncryption;}
const Encryption& encryption() const {return mEncryption;}
Encryption& encryption() {return mEncryption;}
/** @brief tests if an a= key is present in the media section
*
* @param key key to check
*
* @return true if key exists, false otherwise
**/
bool exists(const Data& key) const;
/** @brief get the attribute values corresponding to the key
*
* @param key key to check
*
* @return list of values for given key
**/
const std::list<Data>& getValues(const Data& key) const;
/** @brief erase all attributes for a given key
*
* @param key key to clear
*
**/
void clearAttribute(const Data& key);
// Search through this mediums codecs to find and return the first match from the passed in list
// Note: The codecList item that matched the codec from the medium is passed back via pMatchingCodec
// if a non-NULL pointer is passed in. The codec returned if from this medium.
const Codec& findFirstMatchingCodecs(const CodecContainer& codecs, Codec* pMatchingCodec = 0) const;
// Search through this mediums codecs to find and return the first match from the passed in medium
// Note: The passed in medium's codec that matched the codec from this medium is passed back
// via pMatchingCodec if a non-NULL pointer is passed in. The codec returned if from this medium.
const Codec& findFirstMatchingCodecs(const Medium& medium, Codec* pMatchingCodec = 0) const;
/** @brief finds the telephone-event payload type
*
* @return payload type of telephone-event "codec"
**/
int findTelephoneEventPayloadType() const;
private:
void setSession(Session* session);
Session* mSession;
Data mName;
unsigned long mPort;
unsigned long mMulticast;
Data mProtocol;
std::list<Data> mFormats;
CodecContainer mCodecs;
Data mTransport;
Data mInformation;
std::list<Connection> mConnections;
std::list<Bandwidth> mBandwidths;
Encryption mEncryption;
AttributeHelper mAttributeHelper;
bool mRtpMapDone;
typedef HashMap<int, Codec> RtpMap;
RtpMap mRtpMap;
friend class Session;
};
/** @brief session constructor
*
* Create a new session from origin line, version, and session anme
*
* @param version session version
* @param origin Origin line
* @param name session name
*
**/
Session(int version,
const Origin& origin,
const Data& name);
Session() : mVersion(0) {}
Session(const Session& rhs);
Session& operator=(const Session& rhs);
void parse(ParseBuffer& pb);
EncodeStream& encode(EncodeStream&) const;
/** @brief return session version
*
* @return session version
**/
int version() const {return mVersion;}
/** @brief return session version
*
* @return session version
**/
int& version() {return mVersion;}
/** @brief return session Origin line
*
* @return Origin line
**/
const Origin& origin() const {return mOrigin;}
/** @brief return session Origin line
*
* @return Origin line
**/
Origin& origin() {return mOrigin;}
/** @brief return session name
*
* @return name
**/
const Data& name() const {return mName;}
/** @brief return session name
*
* @return name
**/
Data& name() {return mName;}
/** @brief return session Information
*
* @return Information line
**/
const Data& information() const {return mInformation;}
/** @brief return session Information
*
* @return Information line
**/
Data& information() {return mInformation;}
/** @brief return session Uri
*
* @return Uri line
**/
const Uri& uri() const {return mUri;}
/** @brief return session Uri
*
* @return Uri line
**/
Uri& uri() {return mUri;}
/** @brief return session Email list
*
* @return Email list
**/
const std::list<Email>& getEmails() const {return mEmails;}
/** @brief return session Phone number list
*
* @return Phone number list
**/
const std::list<Phone>& getPhones() const {return mPhones;}
/** @brief return session Connection
*
* @return Connection line
**/
const Connection& connection() const {return mConnection;}
/** @brief return session Connection
*
* @return Connection line
**/
Connection& connection() {return mConnection;} // !dlb! optional?
/** @brief check if a c= line is present for the session
*
* @return true if c= line is present
**/
bool isConnection() const { return mConnection.mAddress != Data::Empty; }
/** @brief return session Bandwidth lines
*
* @return Bandwidth lines
**/
const std::list<Bandwidth>& bandwidths() const {return mBandwidths;}
/** @brief return session Bandwidth lines
*
* @return Bandwidth lines
**/
std::list<Bandwidth>& bandwidths() {return mBandwidths;}
/** @brief return session Time lines
*
* @return Time lines
**/
const std::list<Time>& getTimes() const {return mTimes;}
/** @brief return session Time lines
*
* @return Time lines
**/
std::list<Time>& getTimes() {return mTimes;}
const Timezones& getTimezones() const {return mTimezones;}
const Encryption& getEncryption() const {return mEncryption;}
const Encryption& encryption() const {return mEncryption;}
Encryption& encryption() {return mEncryption;}
typedef std::list<Medium> MediumContainer;
/** @brief return session Media lines
*
* @return Media lines
**/
const MediumContainer& media() const {return mMedia;}
/** @brief return session Media lines
*
* @return Media lines
**/
MediumContainer& media() {return mMedia;}
/** @brief add an e= (email) line to session
*
* @param email Email line to add
*
**/
void addEmail(const Email& email);
/** @brief add a p= (phone number) line to session
*
* @param phone Phone line to add
*
**/
void addPhone(const Phone& phone);
/** @brief add a b= (Bandwidth) line to session
*
* @param bandwidth Bandwidth line to add
*
**/
void addBandwidth(const Bandwidth& bandwidth);
/** @brief add a t= (Time) line to session
*
* @param t Time line to add
*
**/
void addTime(const Time& t);
/** @brief add an m= (Medium) section to session
*
* @param medium Medium section to add
*
**/
void addMedium(const Medium& medium);
/** @brief remove all Medium sections from session
*
**/
void clearMedium() { mMedia.clear(); }
/** @brief erase all attributes for a given key
*
* @param key key to clear
*
**/
void clearAttribute(const Data& key);
/** @brief add a session attribute line
*
* @param key attribute key
* @param value attribute value
*
**/
void addAttribute(const Data& key, const Data& value = Data::Empty);
/** @brief tests if an a= key is present in the session
*
* @param key key to check
*
* @return true if key exists, false otherwise
**/
bool exists(const Data& key) const;
/** @brief get the attribute values corresponding to the key
*
* @param key key to check
*
* @return list of values for given key
**/
const std::list<Data>& getValues(const Data& key) const;
private:
int mVersion;
Origin mOrigin;
Data mName;
MediumContainer mMedia;
// applies to all Media where unspecified
Data mInformation;
Uri mUri;
std::list<Email> mEmails;
std::list<Phone> mPhones;
Connection mConnection;
std::list<Bandwidth> mBandwidths;
std::list<Time> mTimes;
Timezones mTimezones;
Encryption mEncryption;
AttributeHelper mAttributeHelper;
friend class SdpContents;
};
SdpContents();
SdpContents(const HeaderFieldValue& hfv, const Mime& contentTypes);
virtual ~SdpContents();
// !nash! there is no need for overriding copy ctor as every members gets copied
//SdpContents(const SdpContents& rhs);
SdpContents& operator=(const SdpContents& rhs);
/** @brief duplicate an SdpContents object
*
* @return pointer to a new SdpContents object
**/
virtual Contents* clone() const;
/** @brief get the parsed SDP
*
* @return parsed SDP object
**/
Session& session() {checkParsed(); return mSession;}
const Session& session() const {checkParsed(); return mSession;}
virtual EncodeStream& encodeParsed(EncodeStream& str) const;
virtual void parse(ParseBuffer& pb);
static const Mime& getStaticType() ;
static bool init();
private:
SdpContents(const Data& data, const Mime& contentTypes);
Session mSession;
};
static bool invokeSdpContentsInit = SdpContents::init();
typedef SdpContents::Session::Codec Codec;
bool operator==(const SdpContents::Session::Codec& lhs,
const SdpContents::Session::Codec& rhs);
EncodeStream& operator<<(EncodeStream& str, const SdpContents::Session::Codec& codec);
void skipEol(ParseBuffer& pb);
}
#endif
/* ====================================================================
* The Vovida Software License, Version 1.0
*
* Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The names "VOCAL", "Vovida Open Communication Application Library",
* and "Vovida Open Communication Application Library (VOCAL)" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact vocal@vovida.org.
*
* 4. Products derived from this software may not be called "VOCAL", nor
* may "VOCAL" appear in their name, without prior written
* permission of Vovida Networks, Inc.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
* NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
* IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* ====================================================================
*
* This software consists of voluntary contributions made by Vovida
* Networks, Inc. and many individuals on behalf of Vovida Networks,
* Inc. For more information on Vovida Networks, Inc., please see
* <http://www.vovida.org/>.
*
*/
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