Sending email with visual CPP

103

Jul 30, 2006 at 8:47 AM

As said in your previous thread, RFC 821 describes the SMTP protocol. It is actually a quite legible RFC, so you should be able to figure out how the communication with the server should look.
The server you need to connect with is either that of the user's ISP (quite difficult to detect automatically in a portable way), or your ISP's SMTP-server.

Author

112

Jul 30, 2006 at 9:07 AM

I have already used linux api for createing sessions of TCP.
So what I need to do here is to look for a server's ip (the computer number) and connect to the program, at the server side, with port 25?
Then start to send text data as desxribed in RFC821?
But what IP do I need to connect to? If I use yahoo mail?

103

Jul 30, 2006 at 10:19 AM

Great that you know how to use the Berkeley sockets API (i.e. the Linux API): WinSock is really similar.
Indeed, you let the program connect to port 25 of 'smtp.yahoo.com' (which gives 216.145.54.173 for me, but I guess you'd better use gethostbyname and let the DNS find the IP for you). Make connection, send text as described in the RFC, and close again.

deathkrush

Jul 30, 2006 at 10:22 AM

Here is how to Programmatically Send an Email.

(just kidding)

Author

112

Jul 30, 2006 at 10:32 AM

Quote:
Original post by DaBono
Great that you know how to use the Berkeley sockets API (i.e. the Linux API): WinSock is really similar.
Indeed, you let the program connect to port 25 of 'smtp.yahoo.com' (which gives 216.145.54.173 for me, but I guess you'd better use gethostbyname and let the DNS find the IP for you). Make connection, send text as described in the RFC, and close again.

Great, thanks.

Mod

3,014

Jul 30, 2006 at 11:29 AM

Quote:
Original post by deathkrush
Here is how to Programmatically Send an Email.

(just kidding)

I thought of that same WTF. It's brillant! :-)

Author

112

Jul 30, 2006 at 3:08 PM

I have a small problem.
I try to do the following, as written in the gamedev tutorial:

		shutdown (this->Socket, SD_SEND);  // s cannot send anymore		// you should check to see if any last data has arrived here		closesocket (this->Socket);

But I get:
e:\Projects\Engine2\V0\Laby\CoreNetwork.cpp(50): error C2065: 'SD_SEND' : undeclared identifier

I have:
#pragma comment(lib,"ws2_32.lib")

And when I try to include winsock2.h I get lots of errors.

What should I do?

Mod

3,014

Jul 30, 2006 at 5:02 PM

You do not need to shutdown() the socket before you closesocket() it. Just remove the line that calls shutdown() -- it's only needed in rather more complex handshaking situations that what you have.

Author

112

Jul 30, 2006 at 5:14 PM

I solved the problem.
The SD_SEND was the minute problem, because I needed to include winsock2.h.
However, after including winsock2.h I got many errors.
Appranetly, winsock2.h doesnt like being after any #include<>, so I concentrated all the <> includes into one file, in which winsock2.h was the first.
Now all my other .h include this BasicIncludes.h
Its ugly, but it solved the problem.
Or maybe I should have not include winsock2.h anyway?

Mod

3,014