This structure represents a single SACK (selective acknowledgment):

Extends

Name	Type	Description
cObject	(unknown -- not in documented files)

Fields

Name	Type	Description
start	unsigned int	start seq no. of sack block
end	unsigned int	end seq no. of sack block

Source code

//
// This structure represents a single SACK (selective acknowledgment):
//
class SackItem extends cObject
{
    @packetData;
    unsigned int start;     // start seq no. of sack block
    unsigned int end;       // end seq no. of sack block
}

File: src/inet/transportlayer/tcp_common/TcpHeader.msg

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