TcpStatusInfo¶

Namespace: inet

class TcpStatusInfo

Sent with message kind TCP_I_STATUS, in response to command TCP_C_STATUS. For explanation of variables, see RFC 793 or TcpStateVariables in TcpConnection(1,:ref:2 <neddoc-msg-inet-tcp-tcpconnection>).h.

See also: TcpStatusInd, TcpCommandCode, ITcp

Usage diagram¶

Inheritance diagram¶

Extends¶

Name	Type	Description
TcpCommand	class	Control info for TCP connections. This class is to be set as control info (see cMessage::setControlInfo()) on all messages exchanged between TCP and application, in both directions. Some commands and indications (TCP_C_OPEN_xxx, TCP_I_STATUS) use subclasses.

Fields¶

Name	Type	Description
userId	int	id than can be freely used by the app
state	int
stateName	string
localAddr	L3Address
remoteAddr	L3Address
localPort	int
remotePort	int
autoRead	bool	true: TCP send up arrived data automatically. false: should use read command.
snd_mss	unsigned int
snd_una	unsigned int
snd_nxt	unsigned int
snd_max	unsigned int
snd_wnd	unsigned int
snd_up	unsigned int
snd_wl1	unsigned int
snd_wl2	unsigned int
iss	unsigned int
rcv_nxt	unsigned int
rcv_wnd	unsigned int
rcv_up	unsigned int
irs	unsigned int
fin_ack_rcvd	bool

Source code¶

//
// Sent with message kind TCP_I_STATUS, in response to command TCP_C_STATUS.
// For explanation of variables, see RFC 793 or TcpStateVariables in
// TcpConnection.h.
//
// @see ~TcpStatusInd, ~TcpCommandCode, ~ITcp
//
class TcpStatusInfo extends TcpCommand
{
    int state;
    string stateName;

    L3Address localAddr;
    L3Address remoteAddr;
    int localPort;
    int remotePort;
    bool autoRead;   // true: TCP send up arrived data automatically. false: should use read command.

    unsigned int snd_mss;

    unsigned int snd_una;
    unsigned int snd_nxt;
    unsigned int snd_max;
    unsigned int snd_wnd;
    unsigned int snd_up;
    unsigned int snd_wl1;
    unsigned int snd_wl2;
    unsigned int iss;

    unsigned int rcv_nxt;
    unsigned int rcv_wnd;
    unsigned int rcv_up;
    unsigned int irs;

    bool fin_ack_rcvd;
}

File: src/inet/transportlayer/contract/tcp/TcpCommand.msg