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https://github.com/jczic/microwebsrv

A micro HTTP Web server that supports WebSockets, html/python language templating and routing handlers, for MicroPython (used on Pycom modules & ESP32)
https://github.com/jczic/microwebsrv

captive-portal esp32 hc2 http iot language-templating micropython microwebsrv pyboard pycom pyhtml routing support-websockets template-engine templating webserver websocket websocket-server websockets wipy

Last synced: 26 days ago
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A micro HTTP Web server that supports WebSockets, html/python language templating and routing handlers, for MicroPython (used on Pycom modules & ESP32)

Host: GitHub
URL: https://github.com/jczic/microwebsrv
Owner: jczic
License: mit
Created: 2017-06-01T21:38:19.000Z (over 7 years ago)
Default Branch: master
Last Pushed: 2023-01-17T12:18:00.000Z (almost 2 years ago)
Last Synced: 2024-10-10T13:23:02.955Z (26 days ago)
Topics: captive-portal, esp32, hc2, http, iot, language-templating, micropython, microwebsrv, pyboard, pycom, pyhtml, routing, support-websockets, template-engine, templating, webserver, websocket, websocket-server, websockets, wipy
Language: Python
Homepage: https://github.com/jczic/MicroWebSrv
Size: 695 KB
Stars: 645
Watchers: 49
Forks: 116
Open Issues: 12
Metadata Files:
- Readme: README.md
- License: LICENSE.md

Awesome Lists containing this project

README

        


  


    Also check out the new ESP32 MPY-Jama free IDE and the latest MicroWebSrv2 below:

  




                    

  



---




### MicroWebSrv is a micro HTTP Web server that supports WebSockets, html/python language templating and routing handlers, for MicroPython (principally used on ESP32 and [Pycom](http://www.pycom.io) modules. Now supports all variants of [Pyboard D-series](https://store.micropython.org/category/pyboard%20D-series) from the makers of Micropython)

![HC²](hc2.png "HC²")

Very easy to integrate and very light with 3 files only :

- `"microWebSrv.py"` - The Web server

- `"microWebSocket.py"` - The optional support of WebSockets

- `"microWebTemplate.py"` - The optional templating language for **.pyhtml** rendered pages

Mini tuto in video by rdagger68 :

- [https://www.youtube.com/watch?v=xscBwC1SrF4](https://www.youtube.com/watch?v=xscBwC1SrF4)

Simple but effective :

- Use it to embed a cool Web site in yours modules

- Handle GET, POST, ... requests to interract with user and configure options

- Exchange in JSON format on HTTP methods to make an embedded fullREST API

- Serve files on the fly to export any data to the user

- Use routes and variable route handlers

- Play with AjAX to interact speedly with a Web application

- Make it a captive portal simply

- Use WebSockets for fast and powerful data exchange

- Make html/python files for rendering more efficient web pages

### Using *microWebSrv* main class :

| Name  | Function |

| - | - |

| Constructor | `mws = MicroWebSrv(routeHandlers=None, port=80, bindIP='0.0.0.0', webPath="/flash/www")` |

| Start Web server | `mws.Start(threaded=True)` |

| Stop Web server | `mws.Stop()` |

| Check if Web server is running | `mws.IsStarted()` |

| Set URL location for not found page | `mws.SetNotFoundPageUrl(url=None)` |

| Get mime type from file extention | `mws.GetMimeTypeFromFilename(filename)` |

| Get handler function from route | `(routeHandler, routeArgs) = mws.GetRouteHandler(resUrl, method)` |

| Callback function to enable and accept WebSockets | `mws.AcceptWebSocketCallback = _acptWS` `_acptWS(webSocket, httpClient) { }` |

| Maximum length of memory allocated to receive WebSockets data (1024 by default) | `mws.MaxWebSocketRecvLen` |

| New thread used for each WebSocket connection (True by default) | `mws.WebSocketThreaded` |

| Escape string to HTML usage | `MicroWebSrv.HTMLEscape(s)` |

### Basic example :

```python

from microWebSrv import MicroWebSrv

mws = MicroWebSrv()      # TCP port 80 and files in /flash/www

mws.Start(threaded=True) # Starts server in a new thread

```

### Using as captive portal :

```python

# To intercept all not found queries and redirect it,

mws.SetNotFoundPageUrl("http://my-device.wifi")

```

- Can be used with [MicroDNSSrv](http://microdnssrv.hc2.fr) easily.

### Using route handlers example :

```python

routeHandlers = [

  ( "relative_url_route_1", "METHOD", handlerFunc_1 ),

  ( "relative_url_route_2", "METHOD", handlerFunc_2 ),

  ( ... )

]

```

```python

def handlerFunc_1(httpClient, httpResponse, routeArgs=None) :

  print("In HTTP handler 1")

def handlerFunc_2(httpClient, httpResponse, routeArgs=None) :

  print("In HTTP handler 2")

```

### Using directly route handlers decorators example :

```python

@MicroWebSrv.route('/get-test')

def handlerFuncGet(httpClient, httpResponse) :

  print("In GET-TEST HTTP")

@MicroWebSrv.route('/post-test', 'POST')

def handlerFuncPost(httpClient, httpResponse) :

  print("In POST-TEST HTTP")

```

### Using variable routes example :

```python

routeHandlers = [

  ( "/edit//", "GET", handlerFuncEdit ),

  ( ... )

]

def handlerFuncEdit(httpClient, httpResponse, routeArgs) :

  print("In EDIT HTTP variable route :")

  print(" - testid   = %s" % routeArgs['testid'])

  print(" - testpath = %s" % routeArgs['testpath'])

```

Or direclty with route handler decorator :

```python

@MicroWebSrv.route('/edit//')

def handlerFuncEdit(httpClient, httpResponse, routeArgs) :

  print("In EDIT HTTP variable route :")

  print(" - testid   = %s" % routeArgs['testid'])

  print(" - testpath = %s" % routeArgs['testpath'])

```

### Using *httpClient* class in a route handler function :

| Name  | Function |

| - | - |

| Get MicroWebSrv class | `httpClient.GetServer()` |

| Get client address as tuple | `httpClient.GetAddr()` |

| Get client IP address | `httpClient.GetIPAddr()` |

| Get client TCP port | `httpClient.GetPort()` |

| Get client request method | `httpClient.GetRequestMethod()` |

| Get client request total path | `httpClient.GetRequestTotalPath()` |

| Get client request ressource path | `httpClient.GetRequestPath()` |

| Get client request query string | `httpClient.GetRequestQueryString()` |

| Get client request query parameters as list | `httpClient.GetRequestQueryParams()` |

| Get client request headers as list | `httpClient.GetRequestHeaders()` |

| Get client request content type | `httpClient.GetRequestContentType()` |

| Get client request content length | `httpClient.GetRequestContentLength()` |

| Get client request content | `httpClient.ReadRequestContent(size=None)` |

| Get client request form data as list | `httpClient.ReadRequestPostedFormData()` |

| Get client request as JSON object | `httpClient.ReadRequestContentAsJSON()` |

### Using *httpResponse* class in a route handler function :

| Name  | Function |

| - | - |

| Write switching protocols response | `httpResponse.WriteSwitchProto(upgrade, headers=None)` |

| Write generic response | `httpResponse.WriteResponse(code, headers, contentType, contentCharset, content)` |

| Write PyHTML rendered response page | `httpResponse.WriteResponsePyHTMLFile(filepath, headers=None, vars=None)` |

| Write file directly as response | `httpResponse.WriteResponseFile(filepath, contentType=None, headers=None)` |

| Write attached file as response | `httpResponse.WriteResponseFileAttachment(filepath, attachmentName, headers=None)` |

| Write OK response | `httpResponse.WriteResponseOk(headers=None, contentType=None, contentCharset=None, content=None)` |

| Write JSON object as OK response | `httpResponse.WriteResponseJSONOk(obj=None, headers=None)` |

| Write redirect response | `httpResponse.WriteResponseRedirect(location)` |

| Write error response | `httpResponse.WriteResponseError(code)` |

| Write JSON object as error response | `httpResponse.WriteResponseJSONError(code, obj=None)` |

| Write bad request response | `httpResponse.WriteResponseBadRequest()` |

| Write forbidden response | `httpResponse.WriteResponseForbidden()` |

| Write not found response | `httpResponse.WriteResponseNotFound()` |

| Write method not allowed response | `httpResponse.WriteResponseMethodNotAllowed()` |

| Write internal server error response | `httpResponse.WriteResponseInternalServerError()` |

| Write not implemented response | `httpResponse.WriteResponseNotImplemented()` |

### Using route handler function example :

```python

def _httpHandlerTestPost(httpClient, httpResponse) :

  formData  = httpClient.ReadRequestPostedFormData()

  firstname = formData["firstname"]

  lastname  = formData["lastname"]

  content   = """\

  

  

    

      

      TEST POST

    

    

      
TEST POST

      Firstname = %s


      Lastname = %s


    

  

  """ % ( MicroWebSrv.HTMLEscape(firstname),

          MicroWebSrv.HTMLEscape(lastname) )

  httpResponse.WriteResponseOk( headers         = None,

                                contentType     = "text/html",

                                contentCharset  = "UTF-8",

                                content         = content )

```

### Known mime types (content types) :

| File extension | Mime type |

| - | - |

| .txt   | text/plain |

| .htm   | text/html |

| .html  | text/html |

| .css   | text/css |

| .csv   | text/csv |

| .js    | application/javascript |

| .xml   | application/xml |

| .xhtml | application/xhtml+xml |

| .json  | application/json |

| .zip   | application/zip |

| .pdf   | application/pdf |

| .ts    | application/typescript |

| .woff  | font/woff |

| .woff2 | font/woff2 |

| .ttf   | font/ttf |

| .otf   | font/otf |

| .jpg   | image/jpeg |

| .jpeg  | image/jpeg |

| .png   | image/png |

| .gif   | image/gif |

| .svg   | image/svg+xml |

| .ico   | image/x-icon |

### Default index pages order (for http://hostname/) :

| Filename |

| - |

| index.pyhtml |

| index.html |

| index.htm |

| default.pyhtml |

| default.html |

| default.htm |

### Using optional module *microWebSocket* to connect WebSockets :

- File `"microWebSocket.py"` must be present to activate WebSockets support

### Enable and accept WebSockets :

```python

from microWebSrv import MicroWebSrv

mws = MicroWebSrv()                                    # TCP port 80 and files in /flash/www

mws.MaxWebSocketRecvLen     = 256                      # Default is set to 1024

mws.WebSocketThreaded       = False                    # WebSockets without new threads

mws.AcceptWebSocketCallback = _acceptWebSocketCallback # Function to receive WebSockets

mws.Start(threaded=True)                               # Starts server in a new thread

```

| Name  | Function |

| - | - |

| Callback function to receive text message | `ws.RecvTextCallback = func(webSocket, msg)` |

| Callback function to receive binary data | `ws.RecvBinaryCallback = func(webSocket, data)` |

| Callback function when connection was closed | `ws.ClosedCallback = func(webSocket)` |

| Send a text message | `ws.SendText(msg)` |

| Send a binary message | `ws.SendBinary(data)` |

| Check connection state | `ws.IsClosed()` |

| Close the connection | `ws.Close()` |

### Basic example of callback functions :

```python

def _acceptWebSocketCallback(webSocket, httpClient) :

  print("WS ACCEPT")

  webSocket.RecvTextCallback   = _recvTextCallback

  webSocket.RecvBinaryCallback = _recvBinaryCallback

  webSocket.ClosedCallback     = _closedCallback

def _recvTextCallback(webSocket, msg) :

  print("WS RECV TEXT : %s" % msg)

  webSocket.SendText("Reply for %s" % msg)

def _recvBinaryCallback(webSocket, data) :

  print("WS RECV DATA : %s" % data)

def _closedCallback(webSocket) :

  print("WS CLOSED")

```

### Using optional module *microWebTemplate* for *.pyhtml* rendered pages :

- File `"microWebTemplate.py"` must be present to activate **.pyhtml** pages

- Pages will be rendered in HTML with integrated MicroPython code

| Instruction | Schema |

| - | - |

| PY      | `{{ py }}` *MicroPython code* `{{ end }}` |

| IF      | `{{ if` *MicroPython condition* `}}` *html bloc* `{{ end }}` |

| ELIF    | `{{ elif` *MicroPython condition* `}}` *html bloc* `{{ end }}` |

| ELSE    | `{{ else }}` *html bloc* `{{ end }}` |

| FOR     | `{{ for` *identifier* `in` *MicroPython iterator* `}}` *html bloc* `{{ end }}` |

| INCLUDE | `{{ include` *pyhtml_filename* `}}` |

| ?       | `{{` *MicroPython expression* `}}` |

### Using {{ py }} :

```python

{{ py }}

  import machine

  from utime import sleep

  test = 123

  def testFunc(x) :

    return 2 * x

{{ end }}

```

### Using {{ if ... }} :

```python

{{ if testFunc(5) <= 3 }}

  titi

{{ elif testFunc(10) >= 15 }}

  tata

{{ else }}

  I like the number {{ test }} !

{{ end }}

```

### Using {{ for ... }} :

```python

{{ for toto in range(testFunc(3)) }}

  
toto x 10 equal {{ toto * 10 }}

  

{{ end }}

```

### Using {{ include ... }} :

```python

{{ include myTemplate.pyhtml }}

```

### Example of a .pyhtml file :

```html

  

    TEST PYHTML

  

  

    
BEGIN

    {{ py }}

      def _testFunction(x) :

        return "IN TEST FUNCTION %s" % x

    {{ end }}

    

      {{ for toto in range(3) }}

        This is an HTML test...


        TOTO = {{ toto + 1 }} !


        {{ for toto2 in range(3) }}

          TOTO2 = {{ _testFunction(toto2) }}

        {{ end }}

        Ok good.


      {{ end }}

    

    {{ _testFunction(100) }}


    


    {{ if 2+5 < 3 }}

      IN IF (1)

    {{ elif 10+15 != 25 }}

      IN ELIF (2)

    {{ elif 10+15 == 25 }}

      IN ELIF (3)

    {{ else }}

      IN ELSE (4)

    {{ end }}

  

```



## :wink:  Author

  **Jean-Christophe Bos** (:fr:)

  - GitHub: *[@jczic](https://github.com/jczic)*

  - Email:  **

  - Profil: *[LinkedIn](https://www.linkedin.com/in/jczic)*

  - Music:  *[SoundCloud](https://soundcloud.com/jczic/sets/electro-pulse)*

            *[Spotify](https://open.spotify.com/album/5fUd57GcAIcdUn9NX3fviG)*

            *[YouTube](https://www.youtube.com/playlist?list=PL9CsGuMbcLaU02VKS7jtR6LaDNpq7MZEq)*

### By JC`zic for [HC²](https://www.hc2.fr) ;')

*Keep it simple, stupid* :+1: