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POHow to start TLS on an active connection in python?
 

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  1. POHow to start TLS on an active connection in python?
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    <p>The following is my current code for connecting to gmail's smtp server on port 587. After issuing the STARTTLS command how would I finish negotiating the TLS session and begin issuing commands such as AUTH LOGIN and MAIL FROM? I have ommitted my Base64 encoded gmail username and replaced it with xxxxxxxx near the bottom of my code.</p> <p>My output from this program as it is, is: </p> <blockquote> <p>220 mx.google.com ESMTP y10sm3296641yhd.6</p> <p>250-mx.google.com at your service, [75.66.47.144]</p> <p>250-SIZE 35882577</p> <p>250-8BITMIME</p> <p>250-STARTTLS</p> <p>250 ENHANCEDSTATUSCODES</p> <p>220 2.0.0 Ready to start TLS</p> </blockquote> <pre><code>from socket import * import ssl msg = "\r\n smtp.." endmsg = "\r\n.\r\n" # Mailserver hostname and port to be used. mailserver = ("smtp.gmail.com", 587) # Create a socket and create an active TCP connection with the mailserver clientSocket = socket(AF_INET, SOCK_STREAM); clientSocket.connect(mailserver) # Read server response recv = clientSocket.recv(1024) print recv if recv[:3] != '220': print '220 reply not received from server.' # Send EHLO command and print server response. ehloCommand = 'EHLO smtp.google.com\r\n' clientSocket.send(ehloCommand) recv1 = clientSocket.recv(1024) print recv1 if recv1[:3] != '250': print '250 reply not received from server.' # Send STARTTLS command to server and print server response command = "STARTTLS\r\n" clientSocket.send(command) recv1 = clientSocket.recv(1024) print recv1 if recv[:3] != '220': print '220 reply not received from server.' # SEND AUTH LOGIN command and Base64 encoded username command = "AUTH LOGIN xxxxxxxxxxxxx\r\n" clientSocket.send(command) recv1 = clientSocket.recv(1024) print recv1 </code></pre>
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    1. COwhy not just use http://docs.python.org/library/smtplib.html ?
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    2. CO@MK. I want to do this manually as an exercise.
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    3. COI figured so. If not using ssl module written in C, there is a pure python ssl module somewhere. maybe start from ssl.wrap_socket(self.sock, keyfile, certfile)
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