C# Class SnmpSharpNet.UdpTransport

IP/UDP transport class.

Inheritance: IDisposable

显示文件 Open project: griffina/SnmpSharpNet

Protected Properties

Property	Type	Description
_isIPv6	bool
_noSourceCheck	bool
_socket	Socket

Public Methods

Method	Description
Close ( ) : void	Close network socket
Dispose ( ) : void	Dispose of the class.
Request ( IPAddress peer, int port, byte buffer, int bufferLength, int timeout, int retries ) : byte[]	Make sync request using IP/UDP with request timeouts and retries.
UdpTransport ( bool useV6 ) : System	Constructor. Initializes and binds the Socket class

Protected Methods

Method	Description
initSocket ( bool useV6 ) : void	Initialize class socket

Private Methods

Method	Description
AsyncRequestTimerCallback ( object stateInfo ) : void	Internal timer callback. Called by _asyncTimer when SNMP request timeout has expired
ReceiveBegin ( ) : void	Begin async version of ReceiveFrom member of the socket class.
ReceiveFromCallback ( IAsyncResult ar ) : void	Internal callback called as part of Socket.BeginReceiveFrom. Process incoming packets and notify caller of results.
RequestAsync ( IPAddress peer, int port, byte buffer, int bufferLength, int timeout, int retries, SnmpAsyncCallback asyncCallback ) : bool	Begin an async SNMP request
RetryAsyncRequest ( ) : void	Internal retry function. Checks if request has reached maximum number of retries and either resends the request if not reached, or sends request timed-out notification to the caller if maximum retry count has been reached and request has failed.
SendToBegin ( ) : void	Calls async version of the SendTo socket function.
SendToCallback ( IAsyncResult ar ) : void	Callback member called on completion of BeginSendTo send data operation.

Method Details

Close() public method

Close network socket

public Close ( ) : void
return	void

Dispose() public method

Dispose of the class.

public Dispose ( ) : void
return	void

Request() public method

Make sync request using IP/UDP with request timeouts and retries.

Thrown on request timed out. SnmpException.ErrorCode is set to /// SnmpException.RequestTimedOut constant. Thrown when IPv4 address is passed to the v6 socket or vice versa

public Request ( IPAddress peer, int port, byte buffer, int bufferLength, int timeout, int retries ) : byte[]
peer	System.Net.IPAddress	SNMP agent IP address
port	int	SNMP agent port number
buffer	byte	Data to send to the agent
bufferLength	int	Data length in the buffer
timeout	int	Timeout in milliseconds
retries	int	Maximum number of retries. 0 = make a single request with no retry attempts
return	byte[]

UdpTransport() public method

Constructor. Initializes and binds the Socket class

public UdpTransport ( bool useV6 ) : System
useV6	bool	Set to true if you wish to initialize the transport for IPv6
return	System

initSocket() protected method

Initialize class socket

protected initSocket ( bool useV6 ) : void
useV6	bool	Should socket be initialized for IPv6 (true) of IPv4 (false)
return	void

Property Details

_isIPv6 protected_oe property

Flag showing if class is using IPv6 or IPv4

protected bool _isIPv6
return	bool

_noSourceCheck protected_oe property

Internal variable used to disable host IP address/port number check on received SNMP reply packets. If this option is disabled (default) only replies from the IP address/port number combination to which the request was sent will be accepted as valid packets. This value is set in the AgentParameters class and is only valid for SNMP v1 and v2c requests.

protected bool _noSourceCheck
return	bool

_socket protected_oe property

Socket

protected Socket _socket
return	Socket