Sploit contains a TCP/IP network stack interely implemented in userspace.




Supported features:

• TCP, IP, Ethernet protocols
• Transmission timeout. Adaptative setting of the timeout value using the Jacobson e Karn algorithms, with round-trip time measurement.
• Retrasmission of all the packets in the queue when the transmission timeout expires.
• Persist timer and window probes in case of zero size window
• Flux control based on the sliding windows mechanism
• Out of order segments
• Cumulative delayed ack
• MSS negotiation during three-way-handshake
• Congestion control: slow start algorithm and congestion avoidance
• Data sent inside SYN packets

Unsupported features:

• Congestion control: fast recovery, fast retransmit, Nagle's algorithm for silly window sindrome
• Connection establishment timer
• Keepalive timer
• FIN_WAIT and FIN_WAIT_2 timers
• Reception of overlapping TCP segments
• All the TCP options beside the MSS
• All the IP options