How to design a (SMTP, POP3) Mail server C++ Guided project

Name: How to design a (SMTP, POP3) Mail server C++ Guided project
Rating: 5.0 (21 reviews)

C++ Guided project - Design of a mail server

Highest Rated

Created byEzeuko Emmanuel

Last updated 1/2023

English

What you'll learn

The student will learn the difference between SMTP, POP3, and IMAP mail servers
The student will learn how to design a command line client and also GUI to display response from server
The student will understand the POP3 protocols and also the POP3 Commands
The student will design a POP3 mail server that processes commands between the client.
The student will learn the basics of socket programming and how to design a server socket and a client

Course content

1 section • 23 lectures • 3h 17m total length

01. Introduction4:25
resource zip
02. Difference between SMTP, POP3, and IMAP5:06
Explore smtp mail transfer on port 25 between servers, and how pop3 and imap retrieve mail for clients—pop3 offline, imap sync—plus socket-based server design and c++ clients.
03. The POP version3 commands20:12
04. How to load mails from directory to server using LoadMailServer()13:20
05. How to create a server socket and listen for client connection7:22
Learn to design a multi-threaded C++ mail server by binding IP and port, listening for client connections, accepting each connection, and spawning a thread per client on port 8080.
06. How to create the client email class to store email address details9:00
07. How to create connectionHandler to handle client thread and receive message11:16
Design a per-client POP3 connection handler that greets, receives commands in a loop, and uses a mutex to cap active threads at 20 with default responses.
08. How to create the processCMD for processing POP3 protocol commands12:33
Q&A0:58
09. How to send mail and response back to the client using the sendResponse Fn6:03
Explain how to implement the sendResponse function to send client messages using positive and negative responses, with skipWhitespaces to sanitize input in a C++ smtp pop3 mail server project.
10. How to process the user Password or Access token using the RPOP command5:48
11. How to verify the user email address using the USER command6:59
Q&A0:58
12. How to lock the client MailDrop and also retrieve mail information from file12:14
Use the log mail function to check and lock the mail drop, then getmail reads the mail folder and builds the emails vector with sender, date, size, and deleted status.
13. How to use the STAT and LIST command to get information about a mailDrop12:59
Use the stat and list commands to obtain mail drop statistics and per mail details, including total count, size, and each message index, sender, date, and size, with state checks.
14. How to delete a mail and reset a mailDrop using the DELE and RSET command5:04
Delete a mail in a C++ mail server using DELE, checking the transaction state and message id, and marking it deleted. Reset with RSET to unmark deletions and refresh mail.
15. How to retrieve mail from the server using the RETR command and sendMessage10:41
Retrieve command returns full mail content via RETR after validating transaction state and message id, sending content with crlf line endings. Top limits lines when needed.
16. How to Ping a mailServer using NOOP, exit using QUIT and retrieve using TOP11:48
Develop a POP3 mail server in c++ that processes noop, top, and quit commands, extracting message id and line count for top, and deleting marked messages on quit.
17. How to design the command line client11:02
18. How to design the UI Layout for a GUI client mainwindow.h using QT framework12:03
19. How to design signals and slot using TCP class, to listen for server mails8:26
Design and implement TCP signal-slot handling in a Qt C++ mail client: read data with readyRead, emit new messages, manage disconnects, and handle socket errors while sending UI messages.
20. Conclusion - Testing our client Server design8:54

Requirements

Basic Understanding of C++ syntax and class is required

Description

This Course guides the learner through the design of a Mail Server in C++. The course opens with discussions on the difference between different Mail server protocols including SMTP, IMAP and POP3. It progresses towards the different types of servers including Mail server, database server, dns server, HTTP server etc and finally the POP version 3 protocol and twelve of its commands are discussed.

Then the coding project guided by the instructor who first designs a simple server protocol to open connection for a client. All necessary code required to setup a server, generate threads for clients, listen for connect and setup the mail server is programmed. Once a client is connected and on a separate thread the server listens for commands from the client . The list of POP3 commands programmed in this course includes:

RPOP

RETR

STAT

LIST

USER

NOOP

LAST

TOP

QUIT

DELE

RSET

LAST

There are two client designs one client design runs on the command line and the second design displays on GUI( Graphical User Interface) using QT. The GUI design is discussed at length and It consists of a simple design that touches the depth of client socket design. Messages are displayed on text browser and Client messages appear on a line edit.

This course is intended for C++ developers and is a full hands on with a guide from the instructor, from start to the finish , So enroll !!!

Who this course is for:

All levels of C++ developers