Home/ Questions/Q 7785345
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-01T20:14:26+00:00

I am trying to implement a very basic web-server-like application with Python, this is

  • 0

I am trying to implement a very basic web-server-like application with Python, this is my current code:

from socket import *

serverPort = 12000
serverSocket = socket(AF_INET,SOCK_STREAM)
serverSocket.bind(('', serverPort))
serverSocket.listen(1)
print 'Server is now running...'
while 1:
    connectionSocket, addr = serverSocket.accept()
    connectionSocket.sendall('''
        HTTP/1.0 200 OK\r\n
        Content-Type:text/html\r\n
        Connection:close\r\n
        \r\n
        <!DOCTYPE html>
        <head><title>Lab sign-up - AntonX Server</title></head>
        <h1>Lab Sign-up</h1>
        <table>
        <form action=\"localhost:12000\" method=\"GET\">
        <tr><td>Time</td><td>Name</td></tr>
        <tr><td>1 PM</td><td><input type=\"text\" name=\"time_1\"></td></tr>
        <tr><td>2 PM</td><td><input type=\"text\" name=\"time_2\"></td></tr>
        <tr><td>3 PM</td><td><input type=\"text\" name=\"time_3\"></td></tr>
        <tr><td>4 PM</td><td><input type=\"text\" name=\"time_4\"></td></tr>
        <tr><td>5 PM</td><td><input type=\"text\" name=\"time_5\"></td></tr>
        <tr><td colspan=\"2\"><input type=\"submit\" name=\"submit\" value=\"Steal this spot!\"></tr>
        </form></table>
        </html>\r\n
    ''')
    connectionSocket.close()

Problem is…when I navigate to localhost:12000, I get an error 101: Connection has been reset. Why is that?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    The data you are sending back has lots of extra spaces and newline characters.
    For example,

    '''
    HTTP/1.0 200 OK\r\n
    Content-Type:text/html\r\n'''

    will send the string

    (blank line)
(extra spaces)    HTTP/1.0 200 OK  
(blank line)
(extra spaces)    Content-Type:text/html

    In other words, you are getting a mixture of new lines that you have explicitly included with \r\n, and newlines that are naturally in your source code.

    This code works on my web browser.

    from socket import *

serverPort = 12000
serverSocket = socket(AF_INET,SOCK_STREAM)
serverSocket.bind(('', serverPort))
serverSocket.listen(1)
print 'Server is now running...'
while 1:
    connectionSocket, addr = serverSocket.accept()
    connectionSocket.sendall("HTTP/1.0 200 OK\r\n"+
                             "Content-Type: text/html\r\n"+
                             "Connection: close\r\n"+
                             "\r\n"+
        """<!DOCTYPE html>
        <head><title>Lab sign-up - AntonX Server</title></head>
        <h1>Lab Sign-up</h1>
        <table>
        <form action=\"localhost:12000\" method=\"GET\">
        <tr><td>Time</td><td>Name</td></tr>
        <tr><td>1 PM</td><td><input type=\"text\" name=\"time_1\"></td></tr>
        <tr><td>2 PM</td><td><input type=\"text\" name=\"time_2\"></td></tr>
        <tr><td>3 PM</td><td><input type=\"text\" name=\"time_3\"></td></tr>
        <tr><td>4 PM</td><td><input type=\"text\" name=\"time_4\"></td></tr>
        <tr><td>5 PM</td><td><input type=\"text\" name=\"time_5\"></td></tr>
        <tr><td colspan=\"2\"><input type=\"submit\" name=\"submit\" value=\"Steal this spot!\"></tr>
        </form></table>
        </html>\r\n
    """)
    connectionSocket.close()

    (However, this is not a very nice way of writing web servers in Python!)

    You may wish to look at various built in functions in Python to help with this kind of code, perhaps starting at SimpleHTTPServer.

    • 0