> For the complete documentation index, see [llms.txt](https://lifelong-learning.gitbook.io/pythonjourney/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lifelong-learning.gitbook.io/pythonjourney/diary-project/web_programming.md).

# Diary-web-programming

### Task description

* Build onlien diary program
  * Use your own computer as server and client to write diary.
  * Server has the diary file, and respond to client requests.
  * Client can read, write diary through requests.

### Input

* Client send request to write or quit.
* As aboved, the diary content display once the client connects to the server.

### Output

* Once the program start, automately display diary content
* When user send a line of text, save it automately.
* When user ask to quit, exit.  

### Difficulties

* TCP/IP, socket concept

### Neglected Details

* The server can send bytes, which should be converted to string in client, vice versa.-string to bytes: `.encode()`,bytes to string: `.decode()`
* Use Enter to quit can't work in server, so change it to 'Q'.

### Materials:

* [TCP/IP socket course in chinese](https://www.liaoxuefeng.com/wiki/001374738125095c955c1e6d8bb493182103fac9270762a000/001386832511628f1fe2c65534a46aa86b8e654b6d3567c000)
* [Brief example of socket](https://pythontips.com/2013/08/06/python-socket-network-programming/)

## Code

[Github Code Link for server](https://github.com/ShakalakaB/Python_journey_code/blob/master/diary-project/diary_server.py) [Github Code Link for client](https://github.com/ShakalakaB/Python_journey_code/blob/master/diary-project/diary_client.py)


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