Difference: AWEBServer (3 vs. 4)

Revision 42020-05-28 - UliRaich

Line: 1 to 1

META TOPICPARENT	name="Exercises"

A WEB Server and the HTTP Protocol

Exercise 1: Write a Hello World WEB Server

Version 1:

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Let's start simple and produce a WEB server that simply sends "Hello World!" to the browser when called. In the first version we will create a TCP server creating a stream socket and binding to port 80.

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Let's start simple and produce a WEB server that just sends "Hello World!" to the browser when called. In the first version we will create a TCP server creating a stream socket and binding to port 80.

s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) try:
    s.bind(('',80))
except OSError as exception:
    if exception.args[0] == uerrno.EADDRINUSE:
        print("Socket is already bound, please reset the machine")
        sys.exit()

Changed:

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The server then starts listening for incoming an connection request and establishes a connection by accepting it.

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The server then starts listening for an incoming connection request and establishes a connection by accepting it.

s.listen(5) print("Starting the Hello World WEB server on IP address ",ipaddr,"port 80")
while True:
conn,addr=s.accept() print("GOT a connection from %s" % str(addr))

Finally it reads an http request from the connection and answers with its Hello World page:

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