Class which gets SNMP data. More...

#include <psnmp.h>

Inheritance diagram for PSNMPClient:

Collaboration diagram for PSNMPClient:

Public Member Functions
	PSNMPClient (const PString &host, PINDEX retryMax=5, PINDEX timeoutMax=5, PINDEX rxBufferSize=1500, PINDEX txSize=484)

	PSNMPClient (PINDEX retryMax=5, PINDEX timeoutMax=5, PINDEX rxBufferSize=1500, PINDEX txSize=484)

void	SetVersion (PASNInt version)

PASNInt	GetVersion () const

void	SetCommunity (const PString &str)

PString	GetCommunity () const

void	SetRequestID (PASNInt requestID)

PASNInt	GetRequestID () const

PBoolean	WriteGetRequest (PSNMPVarBindingList &varsIn, PSNMPVarBindingList &varsOut)

PBoolean	WriteGetNextRequest (PSNMPVarBindingList &varsIn, PSNMPVarBindingList &varsOut)

PBoolean	WriteSetRequest (PSNMPVarBindingList &varsIn, PSNMPVarBindingList &varsOut)

ErrorType	GetLastErrorCode () const

PINDEX	GetLastErrorIndex () const

PString	GetLastErrorText () const

Public Member Functions inherited from PIndirectChannel
	PIndirectChannel ()
	Create a new indirect channel without any channels to redirect to. More...

	~PIndirectChannel ()
	Close the indirect channel, deleting read/write channels if desired. More...

Comparison	Compare (const PObject &obj) const
	Determine if the two objects refer to the same indirect channel. More...

virtual PString	GetName () const
	Get the name of the channel. More...

virtual P_INT_PTR	GetHandle () const
	Get the OS specific handle for the PSoundChannel. More...

virtual PBoolean	Close ()
	Close the channel. More...

virtual PBoolean	IsOpen () const
	Determine if the channel is currently open and read and write operations can be executed on it. More...

virtual PBoolean	Read (void *buf, PINDEX len)
	Low level read from the channel. More...

virtual int	ReadChar ()
	Read a single character from the channel. More...

virtual PBoolean	Write (const void *buf, PINDEX len)
	Low level write to the channel. More...

virtual PBoolean	Shutdown (ShutdownValue option)
	Close one or both of the data streams associated with a channel. More...

virtual bool	SetLocalEcho (bool localEcho)
	Set local echo mode. More...

virtual PChannel *	GetBaseReadChannel () const
	This function returns the eventual base channel for reading of a series of indirect channels provided by descendents of `PIndirectChannel`. More...

virtual PChannel *	GetBaseWriteChannel () const
	This function returns the eventual base channel for writing of a series of indirect channels provided by descendents of `PIndirectChannel`. More...

virtual bool	CloseBaseReadChannel ()
	Close the base channel of channel indirection using PIndirectChannel. More...

virtual bool	CloseBaseWriteChannel ()
	Close the base channel of channel indirection using PIndirectChannel. More...

virtual PString	GetErrorText (ErrorGroup group=NumErrorGroups) const
	Get error message description. More...

PBoolean	Open (PChannel &channel)
	Set the channel for both read and write operations. More...

PBoolean	Open (PChannel *channel, PBoolean autoDelete=true)
	Set the channel for both read and write operations. More...

PBoolean	Open (PChannel readChannel, PChannel writeChannel, PBoolean autoDeleteRead=true, PBoolean autoDeleteWrite=true)
	Set the channel for both read and write operations. More...

PChannel *	Detach (ShutdownValue option=ShutdownReadAndWrite)
	Detach without closing the read/write channel. More...

PChannel *	GetReadChannel () const
	Get the channel used for read operations. More...

bool	SetReadChannel (PChannel *channel, bool autoDelete=true, bool closeExisting=false)
	Set the channel for read operations. More...

PChannel *	GetWriteChannel () const
	Get the channel used for write operations. More...

PBoolean	SetWriteChannel (PChannel *channel, bool autoDelete=true, bool closeExisting=false)
	Set the channel for read operations. More...

template<class ChannelClass >
ChannelClass *	FindChannel ()
	Locate a channel of a specific class in the indirect chain. More...

Public Member Functions inherited from PChannel
PBoolean	SetErrorValues (Errors errorCode, int osError, ErrorGroup group=LastGeneralError)
	Set error values to those specified. More...

virtual PINDEX	HashFunction () const
	Calculate a hash value for use in sets and dictionaries. More...

FILE *	FDOpen (const char *mode)
	Re-open the device using the stdio library. More...

void	SetReadTimeout (const PTimeInterval &time)
	Set the timeout for read operations. More...

PTimeInterval	GetReadTimeout () const
	Get the timeout for read operations. More...

virtual PINDEX	GetLastReadCount () const
	Get the number of bytes read by the last Read() call. More...

virtual PINDEX	SetLastReadCount (PINDEX count)

PBoolean	ReadBlock (void *buf, PINDEX len)
	Read len bytes into the buffer from the channel. More...

PString	ReadString (PINDEX len)
	Read `len` character into a string from the channel. More...

void	SetWriteTimeout (const PTimeInterval &time)
	Set the timeout for write operations to complete. More...

PTimeInterval	GetWriteTimeout () const
	Get the timeout for write operations to complete. More...

virtual PBoolean	Write (const void buf, PINDEX len, const void )
	Low level write to the channel with marker. More...

virtual PINDEX	GetLastWriteCount () const
	Get the number of bytes written by the last Write() call. More...

virtual PINDEX	SetLastWriteCount (PINDEX count)

PBoolean	WriteChar (int c)
	Write a single character to the channel. More...

PBoolean	WriteString (const PString &str)
	Write a string to the channel. More...

	~PChannel ()
	Close down the channel. More...

Errors	GetErrorCode (ErrorGroup group=NumErrorGroups) const
	Get normalised error code. More...

int	GetErrorNumber (ErrorGroup group=NumErrorGroups) const
	Get OS errro code. More...

virtual bool	ReadAsync (AsyncContext &context)
	Begin an asynchronous read from channel. More...

virtual void	OnReadComplete (AsyncContext &context)
	User callback function for when a `ReadAsync()` call has completed or timed out. More...

virtual bool	WriteAsync (AsyncContext &context)
	Begin an asynchronous write from channel. More...

virtual void	OnWriteComplete (AsyncContext &context)
	User callback function for when a WriteAsync() call has completed or timed out. More...

virtual bool	FlowControl (const void *flowData)
	Flow Control information Pass data to the channel for flowControl determination. More...

PBoolean	SetBufferSize (PINDEX newSize)
	Set the iostream buffer size for reads and writes. More...

PBoolean	SendCommandString (const PString &command)
	Send a command meta-string. More...

void	AbortCommandString ()
	Abort a command string that is in progress. More...

Public Member Functions inherited from PObject
__inline unsigned	GetTraceContextIdentifier () const
	Get PTRACE context identifier. More...

__inline void	SetTraceContextIdentifier (unsigned id)

__inline void	SetTraceContextIdentifier (const PObject &obj)

__inline void	SetTraceContextIdentifier (const PObject *obj)

__inline void	CopyTraceContextIdentifier (PObject &obj) const

__inline void	CopyTraceContextIdentifier (PObject *obj) const

virtual	~PObject ()

__inline const char *	GetClass () const

__inline bool	IsClass (const char *name) const

__inline const PObject *	PTraceObjectInstance () const

virtual PObject *	Clone () const
	Create a copy of the class on the heap. More...

template<class CLS >
CLS *	CloneAs () const
	As for Clone() but converts to specified type. More...

virtual Comparison	CompareObjectMemoryDirect (const PObject &obj) const
	Determine the byte wise comparison of two objects. More...

bool	operator== (const PObject &obj) const
	Compare the two objects. More...

bool	operator!= (const PObject &obj) const
	Compare the two objects. More...

bool	operator< (const PObject &obj) const
	Compare the two objects. More...

bool	operator> (const PObject &obj) const
	Compare the two objects. More...

bool	operator<= (const PObject &obj) const
	Compare the two objects. More...

bool	operator>= (const PObject &obj) const
	Compare the two objects. More...

virtual void	PrintOn (ostream &strm) const
	Output the contents of the object to the stream. More...

virtual void	ReadFrom (istream &strm)
	Input the contents of the object from the stream. More...

Protected Member Functions
PBoolean	WriteRequest (PASNInt requestCode, PSNMPVarBindingList &varsIn, PSNMPVarBindingList &varsOut)

PBoolean	ReadRequest (PBYTEArray &readBuffer)

Protected Member Functions inherited from PIndirectChannel
virtual PBoolean	OnOpen ()
	This callback is executed when the Open() function is called with open channels. More...

	PDECLARE_READ_WRITE_MUTEX (channelPointerMutex)
	Race condition prevention on closing channel. More...

Protected Member Functions inherited from PChannel
	PChannel (const PChannel &)

PChannel &	operator= (const PChannel &)

virtual PBoolean	ConvertOSError (P_INT_PTR libcReturnValue, ErrorGroup group=LastGeneralError)
	Convert an operating system error into platform independent error. More...

int	ReadCharWithTimeout (PTimeInterval &timeout)
	Read a character with specified timeout. More...

PBoolean	ReceiveCommandString (int nextChar, const PString &reply, PINDEX &pos, PINDEX start)

bool	CheckNotOpen ()

virtual int	os_errno () const

PBoolean	PXSetIOBlock (PXBlockType type, const PTimeInterval &timeout)

P_INT_PTR	GetOSHandleAsInt () const

int	PXClose ()

	PDECLARE_MUTEX (px_threadMutex)

	PDECLARE_MUTEX (px_writeMutex)

	PChannel ()
	Create the channel. More...

Protected Member Functions inherited from PObject
	PObject ()
	Constructor for PObject, made protected so cannot ever create one on its own. More...

Protected Attributes
PString	m_hostName

PString	m_community

PASNInt	m_requestId

PASNInt	m_version

PINDEX	m_retryMax

PINDEX	m_lastErrorIndex

ErrorType	m_lastErrorCode

PBYTEArray	m_readBuffer

PINDEX	m_maxRxSize

PINDEX	m_maxTxSize

Protected Attributes inherited from PIndirectChannel
PChannel *	readChannel
	Channel for read operations. More...

PBoolean	readAutoDelete
	Automatically delete read channel on destruction. More...

PChannel *	writeChannel
	Channel for write operations. More...

PBoolean	writeAutoDelete
	Automatically delete write channel on destruction. More...

Protected Attributes inherited from PChannel
PTimeInterval	readTimeout
	Timeout for read operations. More...

PTimeInterval	writeTimeout
	Timeout for write operations. More...

atomic< P_INT_PTR >	os_handle
	The operating system file handle return by standard open() function. More...

PThreadLocalStorage< Status >	m_status [NumErrorGroups+1]

PXBlockType	px_lastBlockType

PThread *	px_readThread

PThread *	px_writeThread

PThread *	px_selectThread [3]

PCriticalSection	px_selectMutex [3]

Protected Attributes inherited from PObject
unsigned	m_traceContextIdentifier

Additional Inherited Members
Public Types inherited from PSNMP
enum	ErrorType { NoError = 0, TooBig = 1, NoSuchName = 2, BadValue = 3, ReadOnly = 4, GenErr = 5, NoResponse, MalformedResponse, SendFailed, RxBufferTooSmall, TxDataTooBig, NumErrors }

enum	RequestType { GetRequest = 0, GetNextRequest = 1, GetResponse = 2, SetRequest = 3, Trap = 4 }

enum	{ TrapPort = 162 }

enum	TrapType { ColdStart = 0, WarmStart = 1, LinkDown = 2, LinkUp = 3, AuthenticationFailure = 4, EGPNeighbourLoss = 5, EnterpriseSpecific = 6, NumTrapTypes }

typedef list< pair< PString, PRFC1155_ObjectSyntax > >	BindingList

Public Types inherited from PChannel
enum	PXBlockType { PXReadBlock, PXWriteBlock, PXAcceptBlock, PXConnectBlock }

enum	Errors { NoError, NotFound, FileExists, DiskFull, AccessDenied, DeviceInUse, BadParameter, NoMemory, NotOpen, Timeout, Interrupted, BufferTooSmall, Miscellaneous, ProtocolFailure, Unavailable, NumNormalisedErrors }
	Normalised error codes. More...

enum	ErrorGroup { LastReadError, LastWriteError, LastGeneralError, NumErrorGroups }
	Error groups. More...

typedef PNotifierTemplate < PChannel::AsyncContext & >	AsyncNotifier

enum	ShutdownValue { ShutdownRead = 0, ShutdownWrite = 1, ShutdownReadAndWrite = 2 }

Public Types inherited from PObject
enum	Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 }
	Result of the comparison operation performed by the `Compare()` function. More...

Static Public Member Functions inherited from PSNMP
static PString	GetErrorText (ErrorType err)

static PString	GetTrapTypeText (PINDEX code)

static void	SendEnterpriseTrap (const PIPSocket::Address &addr, const PString &community, const PString &enterprise, PINDEX specificTrap, PASNUnsigned timeTicks, WORD sendPort=TrapPort)

static void	SendEnterpriseTrap (const PIPSocket::Address &addr, const PString &community, const PString &enterprise, PINDEX specificTrap, PASNUnsigned timeTicks, const PSNMPVarBindingList &vars, WORD sendPort=TrapPort)

static void	SendTrap (const PIPSocket::Address &addr, PSNMP::TrapType trapType, const PString &community, const PString &enterprise, PINDEX specificTrap, PASNUnsigned timeTicks, const PSNMPVarBindingList &vars, WORD sendPort=TrapPort)

static void	SendTrap (const PIPSocket::Address &addr, PSNMP::TrapType trapType, const PString &community, const PString &enterprise, PINDEX specificTrap, PASNUnsigned timeTicks, const PSNMPVarBindingList &vars, const PIPSocket::Address &agentAddress, WORD sendPort=TrapPort)

static void	WriteTrap (PChannel &channel, PSNMP::TrapType trapType, const PString &community, const PString &enterprise, PINDEX specificTrap, PASNUnsigned timeTicks, const PSNMPVarBindingList &vars, const PIPSocket::Address &agentAddress)

Static Public Member Functions inherited from PChannel
static PString	GetErrorText (Errors lastError, int osError=0)
	Get error message description. More...

Static Public Member Functions inherited from PObject
static __inline void	CopyTraceContextIdentifier (PObject &to, const PObject &from)

static __inline void	CopyTraceContextIdentifier (PObject &to, const PObject *from)

static __inline void	CopyTraceContextIdentifier (PObject *to, const PObject &from)

static __inline void	CopyTraceContextIdentifier (PObject to, const PObject from)

static __inline const char *	Class ()

static __inline const PObject *	PTraceObjectInstance (const char *)

static __inline const PObject *	PTraceObjectInstance (const PObject *obj)

template<typename T >
static Comparison	Compare2 (T v1, T v2)
	Compare two types, returning Comparison type. More...

static Comparison	InternalCompareObjectMemoryDirect (const PObject obj1, const PObject obj2, PINDEX size)
	Internal function caled from CompareObjectMemoryDirect() More...

Detailed Description

Class which gets SNMP data.

Constructor & Destructor Documentation

PSNMPClient::PSNMPClient	(	const PString &	host,
		PINDEX	retryMax = `5`,
		PINDEX	timeoutMax = `5`,
		PINDEX	rxBufferSize = `1500`,
		PINDEX	txSize = `484`
	)

PSNMPClient::PSNMPClient	(	PINDEX	retryMax = `5`,
		PINDEX	timeoutMax = `5`,
		PINDEX	rxBufferSize = `1500`,
		PINDEX	txSize = `484`
	)

Member Function Documentation

PString PSNMPClient::GetCommunity ( ) const

ErrorType PSNMPClient::GetLastErrorCode ( ) const

PINDEX PSNMPClient::GetLastErrorIndex ( ) const

PString PSNMPClient::GetLastErrorText ( ) const

PASNInt PSNMPClient::GetRequestID ( ) const

PASNInt PSNMPClient::GetVersion ( ) const

PBoolean PSNMPClient::ReadRequest ( PBYTEArray & readBuffer )

protected

void PSNMPClient::SetCommunity ( const PString & str )

void PSNMPClient::SetRequestID ( PASNInt requestID )

void PSNMPClient::SetVersion ( PASNInt version )

PBoolean PSNMPClient::WriteGetNextRequest	(	PSNMPVarBindingList &	varsIn,
		PSNMPVarBindingList &	varsOut
	)

PBoolean PSNMPClient::WriteGetRequest	(	PSNMPVarBindingList &	varsIn,
		PSNMPVarBindingList &	varsOut
	)

PBoolean PSNMPClient::WriteRequest	(	PASNInt	requestCode,
		PSNMPVarBindingList &	varsIn,
		PSNMPVarBindingList &	varsOut
	)

protected

PBoolean PSNMPClient::WriteSetRequest	(	PSNMPVarBindingList &	varsIn,
		PSNMPVarBindingList &	varsOut
	)

Member Data Documentation

PString PSNMPClient::m_community

protected

PString PSNMPClient::m_hostName

protected

ErrorType PSNMPClient::m_lastErrorCode

protected

PINDEX PSNMPClient::m_lastErrorIndex

protected

PINDEX PSNMPClient::m_maxRxSize

protected

PINDEX PSNMPClient::m_maxTxSize

protected

PBYTEArray PSNMPClient::m_readBuffer

protected

PASNInt PSNMPClient::m_requestId

protected

PINDEX PSNMPClient::m_retryMax

protected

PASNInt PSNMPClient::m_version

protected

The documentation for this class was generated from the following file:

psnmp.h

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation