TcpLwip

simple module

TCP model based on the LWIP 1.3.2 project. The original LWIP is available on this page.

See ITcp for general TCP layer informations.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Parameters

Name	Type	Default value
sendQueueClass	string	""
receiveQueueClass	string	""
crcMode	string	"declared"

Properties

Name	Value	Description
display	i=block/wheelbarrow

Gates

Name	Direction	Size	Description
appIn	input
ipIn	input
appOut	output
ipOut	output

Scheduled messages (observed)

msg	kind	ctrl	tags	msgname	context
omnetpp::cMessage	0			lwip_fast_timer

Direct method calls (observed)

call to	function	info
MessageDispatcher	inet::MessageDispatcher::arrived	arrived
MessageDispatcher	inet::MessageDispatcher::handleRegisterProtocol	handleRegisterProtocol
MessageDispatcher	inet::MessageDispatcher::handleRegisterService	handleRegisterService
Ipv4	inet::Ipv4::registerHook	registerHook()

Incoming messages (observed)

gate	msg	kind	ctrl	srcModule	tags
appIn	Packet	4 (TcpCommandCode::TCP_C_SEND)		TcpEchoApp	DispatchProtocolReq, SocketReq
appIn	Packet	4 (TcpCommandCode::TCP_C_SEND)		TcpSessionApp	DispatchProtocolReq, SocketReq
appIn	Packet	4 (TcpCommandCode::TCP_C_SEND)		TelnetApp	DispatchProtocolReq, SocketReq
appIn	Request	1 (TcpCommandCode::TCP_C_OPEN_ACTIVE)	TcpOpenCommand	TcpSessionApp	DispatchProtocolReq, SocketReq
appIn	Request	1 (TcpCommandCode::TCP_C_OPEN_ACTIVE)	TcpOpenCommand	TelnetApp	DispatchProtocolReq, SocketReq
appIn	Request	2 (TcpCommandCode::TCP_C_OPEN_PASSIVE)	TcpOpenCommand	TcpEchoApp	DispatchProtocolReq, SocketReq
appIn	Request	2 (TcpCommandCode::TCP_C_OPEN_PASSIVE)	TcpOpenCommand	TcpGenericServerApp	DispatchProtocolReq, SocketReq
appIn	Request	3 (TcpCommandCode::TCP_C_ACCEPT)	TcpAcceptCommand	TcpEchoApp	DispatchProtocolReq, SocketReq
appIn	Request	3 (TcpCommandCode::TCP_C_ACCEPT)	TcpAcceptCommand	TcpGenericServerApp	DispatchProtocolReq, SocketReq
appIn	Request	5 (TcpCommandCode::TCP_C_CLOSE)	TcpCommand	TcpEchoApp	DispatchProtocolReq, SocketReq
appIn	Request	5 (TcpCommandCode::TCP_C_CLOSE)	TcpCommand	TcpSessionApp	DispatchProtocolReq, SocketReq
ipIn	Packet	0		Ipv4	DispatchProtocolReq, DscpInd, EcnInd, HopLimitInd, InterfaceInd, L3AddressInd, NetworkProtocolInd, PacketProtocolTag, TosInd, MacAddressInd?
ipIn	Packet	0		Ipv6	DispatchProtocolInd, DispatchProtocolReq, DscpInd, EcnInd, HopLimitInd, InterfaceInd, L3AddressInd, MacAddressInd, NetworkProtocolInd, PacketProtocolTag, TosInd

Outgoing messages (observed)

gate	msg	kind	ctrl	destModule	tags
appOut	Indication	3 (TcpStatusInd::TCP_I_AVAILABLE)	TcpAvailableInfo	TcpEchoApp	SocketInd, TransportProtocolInd
appOut	Indication	3 (TcpStatusInd::TCP_I_AVAILABLE)	TcpAvailableInfo	TcpGenericServerApp	SocketInd, TransportProtocolInd
appOut	Indication	4 (TcpStatusInd::TCP_I_ESTABLISHED)	TcpConnectInfo	TcpEchoApp	SocketInd, TransportProtocolInd
appOut	Indication	4 (TcpStatusInd::TCP_I_ESTABLISHED)	TcpConnectInfo	TcpGenericServerApp	SocketInd, TransportProtocolInd
appOut	Indication	4 (TcpStatusInd::TCP_I_ESTABLISHED)	TcpConnectInfo	TcpSessionApp	SocketInd, TransportProtocolInd
appOut	Indication	4 (TcpStatusInd::TCP_I_ESTABLISHED)	TcpConnectInfo	TelnetApp	SocketInd, TransportProtocolInd
appOut	Indication	5 (TcpStatusInd::TCP_I_PEER_CLOSED)	TcpCommand	TcpEchoApp	SocketInd, TransportProtocolInd
appOut	Indication	6 (TcpStatusInd::TCP_I_CLOSED)	TcpCommand	TcpSessionApp	SocketInd, TransportProtocolInd
appOut	Packet	1 (TcpStatusInd::TCP_I_DATA)		TcpEchoApp	SocketInd, TransportProtocolInd
appOut	Packet	1 (TcpStatusInd::TCP_I_DATA)		TcpSessionApp	SocketInd, TransportProtocolInd
ipOut	Packet	0		Ipv4	DispatchProtocolReq, L3AddressReq, PacketProtocolTag, TransportProtocolInd
ipOut	Packet	0		Ipv6	DispatchProtocolReq, L3AddressReq, PacketProtocolTag, TransportProtocolInd

Packet operations (observed)

chunkType	packetAction
	peekDataAsBytes, peekDataAt, trimFront
BytesChunk	Packet, insertAtBack
TcpHeader	insertAtFront, peekAtFront, removeAtFront

Shared Tagging operations (observed)

tagType	tagAction
DispatchProtocolReq	addTag
InterfaceInd	getTag
L3AddressInd	getTag
L3AddressReq	addTag
PacketProtocolTag	addTagIfAbsent, getTag
SocketInd	addTag
SocketReq	getTag
TransportProtocolInd	addTag, addTagIfAbsent

Source code

//
// TCP model based on the LWIP 1.3.2 project.
// The original LWIP is available on
// <a href="http://savannah.nongnu.org/projects/lwip/" target="_blank">this page</a>.
//
// See ~ITcp for general TCP layer informations.
//
simple TcpLwip like ITcp
{
    parameters:
        string sendQueueClass = default("");    //# TODO Obsolete!!!
        string receiveQueueClass = default(""); //# TODO Obsolete!!!
        string crcMode @enum("declared","computed") = default("declared");
        @display("i=block/wheelbarrow");

    gates:
        input appIn @messageKinds(inet::TcpCommandCode);
        input ipIn;
        output appOut @messageKinds(inet::TcpStatusInd);
        output ipOut;
}

File: src/inet/transportlayer/tcp_lwip/TcpLwip.ned