tcp_ip

User-space TCP/IP stack

Features

IPv4

• IPv4 fragmentation and reassembly is supported.
• IPv4 options are not supported and are silently ignored.

IPv6

• In development, currently does not support any extended protocols.

UDP

Use UdpSocket. Supported over IPv4 and IPv6.

ICMPv4 & ICMPv6

Use IcmpSocket or IcmpV6Socket. The user needs to handle the ICMP header themselves and calculate the checksum.

TCP

Use TcpListener and TcpStream. Supported over IPv4 and IPv6.

• MSS is negotiated
• Window scaling is negotiated.
• Reassembly of out-of-order segments is supported
• The timeout waiting time is fixed and can be configured
• Selective acknowledgements permitted. (Proactively ACK the need for improvement)

Other

Using IpSocket to send and receive packets of other protocols.(Handles all IP upper-layer protocols without requiring the user to consider IP fragmentation.)

example

• tcp
• udp
• icmp
• ipv4_ipv6
• proxy
• tcp_connect

iperf test

LAN Speed Test

Example：Proxy-Windows

Example: Proxy-Linux