This repository contains a simple implementation of SMTP (Simple Mail Transfer Protocol).
Server written in c++ using uvw library and bazel build system.
To build, you may have installed following requirements.
bazel
libuv (v1.44)
c++ compiler (with support of standard >= 20)Then you can easily run server. (in the root directory of repo.)
bazel run server -- $(pwd)/src/clientsClient written in python. you can run multiple cilents at the same time. (Make sure before sending mail, your email exists in clients director like examples)
python3 client.pyFirst we must run the server.
╰─$ bazel run server -- $(pwd)/src/clients
INFO: Analyzed target //:server (0 packages loaded, 0 targets configured).
INFO: Found 1 target...
Target //:server up-to-date:
bazel-bin/server
INFO: Elapsed time: 0.125s, Critical Path: 0.01s
INFO: 1 process: 1 internal.
INFO: Build completed successfully, 1 total action
INFO: Build completed successfully, 1 total actionNow the server is listening, Next we run a client and this is a simple output of the client.
╰─$ python3 client.py
>> HELO gmail
<< 250 Hello gmail, pleased to meet you
>> MAIL FROM: <omid@gmail.com>
<< 250 omid@gmail.com ... Sender OK
>> RCPT TO: <keyvan@mail.ir>
<< 250 keyvan@mail.ir ... Recipient OK
>> DATA
<< 354 Enter mail, end with "." on a line by itself
>> Oh Dear Keyvan,
>> How are you?
>> .
<< 250 Message accepted for delivery
>> SEND
<< 250 Mail sent
>> QUIT
<< 221 Closing ConnectionNow we can see the mail in keyvan@mail.ir's inbox.
╰─$ tree
.
├── client.py
├── com
│ ├── gmail
│ │ ├── omid
│ │ │ ├── client
│ │ │ └── inbox
│ │ └── reza
│ │ ├── client
│ │ └── inbox
│ └── yahoo
│ └── omid
│ ├── client
│ └── inbox
└── ir
└── mail
└── keyvan
├── client
└── inbox
└── Mon Jul 4 10:36:05 2022\012╰─$ cat ir/mail/keyvan/inbox/Mon\ Jul\ \ 4\ 10:36:05\ 2022$'\n'
From: omid@gmail.com
To: keyvan@mail.ir
Mail :
'''
Oh Dear Keyvan,
How are you?
'''