# P2P

**Repository Path**: sysu_nww/P2P

## Basic Information

- **Project Name**: P2P
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2019-03-28
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# P2P

## Host roles
|role|host|IP|port|
|:---:|:---:|:---:|:---:|
|peer0|UbuntuServer|192.168.56.104|6666|
|peer1|Ubuntuserver2|192.168.56.105|6666|
|tracker|UbuntuClient|192.168.56.106|6666|
|client|manjaro|192.168.56.1|6666|
## The format of transfer file information from peer to tracker(json)
*  Items contained:
    * request type(request_type):1(stand for register)
    * A list(file_list) containing of names and sizes of media files
    <!---* File path(path)
    * File size(size)
    * Whether the chunk exists(list)(NotEmpty)--->
* Tracker response:
    * On success,return {'status_code':200}
    * Else, return {'status_code':'404'}

## The format of request and response between peers(json)
* Request
    * Request type(request_type)
        * request type is 1:
            * File name(file_name)
            * Chunk start number(start_num)
                <!-- * start_chunk==-1 first query to check whether the file exists -->
                <!-- * start_num==-2 no more chunk is needed,close connection -->
                <!-- * request for file -->
            * Chunk end num(end_chunk)
        * request type is 2:
            * message(message)
* Response
    * data(if request type is 1)
        <!-- * file info(info): an element in list infos -->
    <!-- * Whether the chunk exists {'chunk_status':0 or 1}
    * If chunk status equals 1, then start to transfer file -->

## The format between tracker and client(json)
* Request
    * request type(request_type):0
    * file name(file_name)
* Response
    * status code
        * 200 The file exists on someone else's computer
        * 404 THe file doesn't exist
    * a IP list which contains IPs of computers who has the file(IP_list)
    * size of the file(file_size)


# Chatting
All client send message to server first,then the server forwarding message.
## The format for message from client to server
* request type(request_type):2
* message(message)
## The format for message from server to each registered client
* source(source)
* message(message)