From aeffb64aa8886153284d5e7020f8b6bb99732d9b Mon Sep 17 00:00:00 2001
From: gijsio <67470426+gijsio@users.noreply.github.com>
Date: Mon, 20 Jul 2020 13:59:39 +0200
Subject: [PATCH] included http webserver example
---
.../tutorials/networkprotecols/webserver.md | 69 ++++++++++++++++---
1 file changed, 60 insertions(+), 9 deletions(-)
diff --git a/content/tutorials/networkprotecols/webserver.md b/content/tutorials/networkprotecols/webserver.md
index 4e8a411..6bd67da 100644
--- a/content/tutorials/networkprotecols/webserver.md
+++ b/content/tutorials/networkprotecols/webserver.md
@@ -6,26 +6,77 @@ aliases:
- chapter/tutorials/networks/webserver
---
-Using the WiFi connection, we can create a simple webserver on the module
+Using the WiFi connection, we can create a HTTP simple webserver on the module with the socket library.
```python
+import usocket
+import _thread
+import time
from network import WLAN
-import socket
+import pycom
-wlan = WLAN()
-wlan.init(mode=WLAN.STA, ssid="", auth=(WLAN.WPA2, "")) #you can use both STA or AP mode for the webserver
+availablecolor = 0x001100
+connectioncolor = 0x110000
-sock = socket.socket(usocket.AF_INET, usocket.SOCK_STREAM) #use the socket on the WLAN (INET) adapter, and use stream (TCP)
-sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) #set the options to use IP addresses, and check the default option to reuse.
-sock.bind(("192.168.4.1"), 80) #use the socket on this ip address, using this port. Change the IP address if you are using STA mode.
+# Thread for handling a client
+def client_thread(clientsocket,n):
+ # Receive maxium of 12 bytes from the client
+ r = clientsocket.recv(4096)
-sock.listen(5) #allow for 5 simultaneous connections
+ # If recv() returns with 0 the other end closed the connection
+ if len(r) == 0:
+ clientsocket.close()
+ return
+ else:
+ # Do something wth the received data...
+ print("Received: {}".format(str(r))) #uncomment this line to view the HTTP request
+ http = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection:close \r\n\r\n" #HTTP response
+
+ if "GET / " in str(r):
+ #this is a get response for the page
+ # Sends back some data
+ clientsocket.send(http + " You are connection "+ str(n) + "
Your browser will send multiple requests
hello!
change led color!")
+ elif "GET /hello "in str(r):
+
+ clientsocket.send(http + " Hello to you too!
go back ")
+ elif "GET /color" in str(r):
+ pycom.rgbled(0xFFFFFF)
+ clientsocket.send(http + " You are connection "+ str(n) + "
Your browser will send multiple requests
hello!
change led color!")
+ # Close the socket and terminate the thread
+
+ clientsocket.close()
+ pycom.rgbled(connectioncolor)
+ time.sleep_ms(500)
+ pycom.rgbled(availablecolor)
+
+time.sleep(1)
+wifi = WLAN()
+wifi.init(mode=WLAN.AP, ssid="hello", auth=None, channel=1)
+print("WiFi is up!")
+time.sleep(1)
+pycom.heartbeat(False)
+pycom.rgbled(availablecolor)
+
+# Set up server socket
+serversocket = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM)
+serversocket.setsockopt(usocket.SOL_SOCKET, usocket.SO_REUSEADDR, 1)
+serversocket.bind(("192.168.4.1", 80))
+
+# Accept maximum of 5 connections at the same time
+serversocket.listen(5)
+
+# Unique data to send back
+c = 1
while True:
# Accept the connection of the clients
(clientsocket, address) = serversocket.accept()
- # Reply with the webpage
+ # Start a new thread to handle the client
+ _thread.start_new_thread(client_thread, (clientsocket, c))
+ c = c+1
+serversocket.close()
+```