https://github.com/soyum2222/sharpshooter

reliability network protocol useing UDP
https://github.com/soyum2222/sharpshooter

network reliability-network-protocol sharpshooter tcp transfer udp

Last synced: 5 months ago
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reliability network protocol useing UDP

• Host: GitHub
• URL: https://github.com/soyum2222/sharpshooter
• Owner: soyum2222
• License: mit
• Created: 2020-05-17T06:34:11.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2024-08-22T08:25:14.000Z (almost 2 years ago)
• Last Synced: 2024-08-22T10:57:48.141Z (almost 2 years ago)
• Topics: network, reliability-network-protocol, sharpshooter, tcp, transfer, udp
• Language: Go
• Homepage:
• Size: 325 KB
• Stars: 8
• Watchers: 1
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: Readme.md
  • License: LICENSE

Awesome Lists containing this project

README

          

## Sharpshooter

![GitHub](https://img.shields.io/github/license/soyum2222/sharpshooter?logo=Github&style=plastic)  ![GitHub commit activity](https://img.shields.io/github/commit-activity/m/soyum2222/sharpshooter?logo=Github) 

 

Sharpshooter is a reliability network protocol using UDP.

    

It is a connection-oriented protocol just like TCP.

    

It doesn't have packet characteristics,You can try it to bypassing some protocol characteristics detection,and base for P2P application transport protocol.

    

About instructions , you can see example dir, I provided tow simple example.

    

If want TCP to sharpshooter convert , can try https://github.com/soyum2222/sharpshooter-tunel .

    

    

## Specification

`| SIZE(4byte) | SQE(4byte) | CMD(2byte) | CONTENT(.......) |`

    SIZE:

        contain SQE CMD CONTENT byte size . but not contain itself byte size .

        

    SQE

        sequence number, continuous data package, SQE is continuous.

        

    CMD

        0:ack

        1:NORMAL

        2:first handshack

        3:second handshack(response first handshack)

        4:third handshack

        5:close connction(FIN)

        6:response close

        7:health check

        8:response health 

           

    ACK package

        

    | SIZE(4byte) | SQE(4byte) | CMD(2byte) | ackSQE1(4byte)| ackSQE2(4byte) | ackSQE3(4byte) | ... |

        

    The package max length can't over DEFAULT_INIT_PACKSIZE or Sniper.packageSize      

    

    When receive ack like :

    

        | SIZE(4byte) | SQE(4byte) | CMD(2byte) | ackSQE1(4byte)| ackSQE2(4byte) | ackSQE3(4byte) |

        

    if ackSQE1 == ackSQE2 and ackSQE1 < ackSQE3 this situation means ackSQE1 to ackSQE3 is continuous number .

    

    eg:  receive data : |0|0|0|1|1|10| , this means other party sent ack 1 to 10.

## Use

#### Ping pong

[ping.go](https://github.com/soyum2222/sharpshooter/blob/master/example/ping.go)

[pong.go](https://github.com/soyum2222/sharpshooter/blob/master/example/pong.go)

    

#### File transfer

[send_file.go](https://github.com/soyum2222/sharpshooter/blob/master/example/send_file.go)

[receive_file.go](https://github.com/soyum2222/sharpshooter/blob/master/example/send_file.go)

## Network utilization

try transfer 100M file

![speed](https://github.com/soyum2222/sharpshooter/blob/master/image/network.png)

![utilization](https://github.com/soyum2222/sharpshooter/blob/master/image/network-utilization.png)

utilization depends on network status and send window size