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spp

SPP is a simple and powerful proxy

Note: This tool is only to be used for study and research, do not use it for illegal purposes

Features

Supported protocol: TCP, UDP, RUDP (Reliable UDP), RICMP (Reliable ICMP), RHTTP (Reliable HTTP), KCP, Quic
Support type: forward proxy, reverse agent, SOCKS5 forward agent, SOCKS5 reverse agent
Agreement and type can be freely combined
External agent agreement and internal forwarding protocols can freely combine
Support Shadowsocks plug-in, spp-shadowsocks-plugin，spp-shadowsocks-plugin-android

Instructions

Server

Start Server, assume that the server IP is www.server.com, listening port 8888

# ./spp -type server -proto tcp -listen :8888

You can also listen simultaneously with other types of ports and protocols.

# ./spp -type server -proto tcp -listen :8888 -proto rudp -listen :9999 -proto ricmp -listen 0.0.0.0

Can also use Docker

# docker run --name my-server -d --restart=always --network host esrrhs/spp ./spp -proto tcp -listen :8888

Client

Start TCP forward proxy, map the 8080 port of www.server.com to the local 8080 so that access to local 8080 is equivalent to accessing www.server.com 8080

# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto tcp

Start the TCP reverse agent, map the local 8080 to the 8080 port of www.server.com, which visit www.server.com 8080 is equivalent to accessing the local 8080

# ./spp -name "test" -type reverse_proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto tcp

Start TCP Positive Socks5 Agent, open the SOCKS5 protocol in the local 8080 port, access the network in Server through Server

# ./spp -name "test" -type socks5_client -server www.server.com:8888 -fromaddr :8080 -proxyproto tcp

Start TCP Reverse Socks5 Agent, open the Socks5 protocol at www.server.com's 8080 port, access the network in the client through the Client

# ./spp -name "test" -type reverse_socks5_client -server www.server.com:8888 -fromaddr :8080 -proxyproto tcp

Other proxy protocols, only need to modify the proxyProto parameters of the client, for example

Proxy UDP
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto udp

Proxy rudp
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8081 -toaddr :8081 -proxyproto rudp

Proxy ricmp
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8082 -toaddr :8082 -proxyproto ricmp

At the same time, the above three
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto udp -fromaddr :8081 -toaddr :8081 -proxyproto rudp -fromaddr :8082 -toaddr :8082 -proxyproto ricmp

Internal communication between Client and Server, can also be modified to other protocols, automatic conversion between external protocols and internal protocols. E.g

Proxy TCP, internal RUDP protocol forwarding
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto tcp -proto rudp

Proxy TCP, internal RICMP protocol forwarding
# ./spp -name "test" -type proxy_client -server www.server.com -fromaddr :8080 -toaddr :8080 -proxyproto tcp -proto ricmp

Agent UDP, internal TCP protocol forwarding
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto udp -proto tcp

Agent UDP, internal KCP protocol forwarding
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto udp -proto kcp

Proxy TCP, internal Quic protocol forwarding
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto tcp -proto quic

Proxy TCP, internal RHTTP protocol forwarding
# ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto tcp -proto rhttp

Can also use Docker

# docker run --name my-client -d --restart=always --network host esrrhs/spp ./spp -name "test" -type proxy_client -server www.server.com:8888 -fromaddr :8080 -toaddr :8080 -proxyproto tcp

Performance Testing

Test the maximum bandwidth speed in the case where the IPERF script using the Benchmark / local_tcp directory is tested in the CPU. The proxy protocol is TCP, and the results of various transit protocols are used as follows:

Agent	Speed	Speed (Ency)	Speed (Encryption Compression)
Direct connection	3535 MBytes/sec
tcp forwarding	663 MBytes/sec	225 MBytes/sec	23.4 MBytes/sec
rudp forwarding	5.15 MBytes/sec	5.81 MBytes/sec	5.05 MBytes/sec
ricmp forwarding	3.34 MBytes/sec	3.25 MBytes/sec	3.46 MBytes/sec
rhttp forwarding	10.7 MBytes/sec	10.8 MBytes/sec	8.73 MBytes/sec
kcp forwarding	18.2 MBytes/sec	18.6 MBytes/sec	14.7 MBytes/sec
quic forwarding	35.5 MBytes/sec	32.8 MBytes/sec	15.1 MBytes/sec

Using the IPERF script of the Benchmark / Remote_TCP directory, in the multi-machine test, the server is located in Tencent Cloud, the client is located locally, and the maximum bandwidth speed is tested. The proxy protocol is TCP, and the results of various transit protocols are used as follows:

Agent	Speed	Speed (Ency)	Speed (Encryption Compression)
Direct connection	2.74 MBytes/sec
tcp forwarding	3.81 MBytes/sec	3.90 MBytes/sec	4.02 MBytes/sec
rudp forwarding	3.33 MBytes/sec	3.41 MBytes/sec	3.58 MBytes/sec
ricmp forwarding	3.21 MBytes/sec	2.95 MBytes/sec	3.17 MBytes/sec
rhttp forwarding	3.48 MBytes/sec	3.49 MBytes/sec	3.39 MBytes/sec
kcp forwarding	3.58 MBytes/sec	3.58 MBytes/sec	3.75 MBytes/sec
quic forwarding	3.85 MBytes/sec	3.83 MBytes/sec	3.92 MBytes/sec

Note: The test data is Centos.ISO, which has been compressed, so the effect of compression forwarding is not obvious.
If you want to directly test each protocol bandwidth of the network, use multi-protocol bandwidth test tools connperf