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Send commands through IP address

Posted on 2001-08-11
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Last Modified: 2013-11-13
Hi , Iam bulding a programe which will be used in a company which has 2 office every office in a diffrenet
city , they are always connected to the net so i want to know if i put my programe in both offices how
can i determind the ip address and how can i send commands and information from my programe in one office
to the other , thanx a lot , iam using VB6
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Question by:ashraf_t
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by:DandL
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You would need to have one sever.  This sever can live on your machine.  There are two different protocals witch you can use.
1.TCP/IP
2.UDP
The best way to get started with these two protocals is to spent some time in the MSDN look up "tcp and udp network services". There it will tell you about the "winsock control".  There is code there for a chatt program. Compile that program and start from there. Compile it for the UDP and TCP.  It is pretty basic and easy to understand.


As to your question:
>how can i determind the ip address and how can i send commands and information from my programe in one office

 This is done by writting a client for you server. Your server will/should have a static IP.  When you load the client program on a machine it can contact your server through your static IP address.  If you use tcp or udp once the client contact you you can get the ip at that time.  Again this is all explain in the MSDN.

If this comment was to elementry then I can supply more indepth info. Just tell me

DandL
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by:ashraf_t
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No the IP may differ from one time to another it is not static
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by:ashraf_t
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I saw that in a computer game called fifa 2001 , 2 players can play against each other through i address
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by:BozzoCage
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by:DandL
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Yea there are a lot of online games that allow two or more players to play agianst each other. The way that is done is when you first must connect to there web site first. You are connecting to them through a static ip.  Or if you have a lan party you are making one computer the server and then detecting the server in that small lan.

On to a posible solution to your problem....

What you might be able to do if the IPs are not static, is to use the MAPI control that vb offers.  The mapi control is an e-mail protocal that you could use to have the client email you there IP. Then you contact them through a tcp connection.  The code for a client to detect there IP is just a few lines( if your doing it in VB).  An since you are working for a company then you have an e-mail address right.  Well you could probable request an e-mail address that is just for this project.  Well when you receive an email you can parse the email to get the ip that the client sent you...then pass that in as a parameter to your sever. Then connect to the clients machine. "send commands and information "  
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by:ashraf_t
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is this mail must be POP3 or it could be a free mail like hotmail , can mapi handle with this kind of free mail
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by:DandL
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I'm not sure... I just opened the msdn mail project/code and am playing with it. It sends and recieves mail fine.  If you do not have msdn I can e-mail you the file ziped up. It is small under 8.k

Just let me know.
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by:ashraf_t
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Ok DandL pls send it to aaet@mailexcite.com , thanx
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by:ashraf_t
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Ok guys , now i can make a programe using IP address , i got it from ur help and from vb help i take the example they provided , make some changes , but it can not coonect although i can connect on my computer but when i gave it to a friend ant try to connect to him it doesnot work , what is the problem , i can send my programe to anyone of you , can anyone take it and tell me what is wrong with it
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by:ashraf_t
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Why u didnot answer guy, r u give up?
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by:DandL
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No just real busy.  If you want to reply to that email I sent you then I will take a look at it.  Though, I will not be able to get to it today. But I will as soon as I can.
DandL
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by:ashraf_t
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Ok Dandl tell me ur email
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DandL earned 100 total points
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you could either just reply to the e-mail I sent you or send to
jdgidcumb@peoplepc.com
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