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Hi,
there are no limitations on characters transmitted over the sockets. You may transmit any character from 0x00 to 0xFF.
Some limitations (for example, in SMTP) were derived from protocol design. In case of SMTP, it was a possibility to use 7-bit encoding for message body.
Sincerely Yours,
RadioShark
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Thank you RadioShark, that's very useful for me. Anyway I have couple of questions:
1) In source code of some network applications I've seen that before sending the data over socket, "\r\n" and '\0' was added to the data. Why? It is not neccessary, is it?
2) I have read someting about special characters, that could confuse modem when they are about to be transmitted. In other words, modem would probably consider them to be some special commands or what...Is it true?
Thank you.
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When sending characters to a modem, the sequence '+++' causes it to interpret what follows as a command instead of data to be transmitted. But since commands begin with the sequence 'AT' (attention), if what follows is something other than this sequence the modem should revert back to its previous state. I suppose that deliberately sending +++ might cause it to lose those characters, but I've never tested it. Perhaps modem designers have taken this into account, and pass them on if a command doesn't follow them.
Will Build Nuclear Missile For Food - No Target Too Small
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The original question was about sockets. The sequences 'AT' or '+++' will be used when you work with modem directly via serial port.
Sincerely Yours,
RadioShark
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I know, but the second question was about modems. Sockets don't care what's sent through them, as you pointed out nicely.
Will Build Nuclear Missile For Food - No Target Too Small
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1. Sometimes "\r\n" is required by protocol design. Sometimes, a developer uses it for well-formatting of the source code.
2. Never mind about special characters. If the special character appears, it will be replaced automatically by escape-sequence.
Sincerely Yours,
RadioShark
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Hi, im veyr new to mfc, can anyone show me how to detect enter key is pressed in a cedit control?
thanks a bunch
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hi , i'm beginner in vc++ and i start an mdi application:
my simple question is:
how can i add bitmaps to the toolbar (one file bmp that contains the tool bar images)
example ;
i have 5 bmp's and iwant to make them in one file toolbar.bmp fot the tool bar.
Please , hwo can i do this,
thanks
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Hi,
You may use a built-in Visual C++ image editor for creating own toolbar. But in this case, you are allowed to create only 16-color image toolbar.
Sincerely Yours,
RadioShark
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what about 24-color image?
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Ive made a program with MFC and when i try to run it on another computer its asking for loads of dll files , is there some thing i gotta install to get this to work?
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if you want to disturbute ur exe file, then you need to build it under release mode. If your application is using some ActiveX components, then you need to copy them and register it too.
MSN Messenger.
prakashnadar@msn.com
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In "Project setting" - General select "Use MFC in Static Library".
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its a good idea but it will increase the binary to a huge one, like in MBs you dont want ur customers to download ur file from the net that does a small task but takes ages to download.
MSN Messenger.
prakashnadar@msn.com
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I dunno why two morons voted this a 1, I thought it was damn good advice.
Christian
I have drunk the cool-aid and found it wan and bitter. - Chris Maunder
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Voting down is onething, but voting down without a reason is really stupid.
MSN Messenger.
prakashnadar@msn.com
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The customer will need to download the DLLs anyway. I doubt 98 comes with the VS.NET C RTLs made in 2002.
Tim Smith
I'm going to patent thought. I have yet to see any prior art.
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It's amazing how handy your little FAQ is to us beginners, Mike...
Will Build Nuclear Missile For Food - No Target Too Small
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For MFC you need MFC42.dll, if you've used C as well as C++, you probably need MSVCRT as well.
Christian
I have drunk the cool-aid and found it wan and bitter. - Chris Maunder
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Hi everyone
I have little problem with determining correct AddressOfEntryPoint in PE headers. When this param is incorrect, then I try execute exe file, Windows says, that isn't Win32 application.
How to programmatically check, which value should be contain AddressOfEntryPoint ? Is it possible to determine correct value based on other parts PE headers e.g. IMAGE_DATA_DIRECTORY ?
snippet of source code will be blessing
Mila
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AddressOfEntryPoint is a realative value, that means it points to a address in the file.
Have a look at some PE tutorials, they will show you how to calculate the right value.
Don't try it, just do it! 
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hi ...
I would like to build a simple program to submit form data for a specific webpage.
but i get an error "the operation timed out" i make my search but i did not find any thing usefull.......
so any help........
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Are you using http 1.1 protocol??? If so why dont you refer RFC2068 on http 1/1 protocol.
MSN Messenger.
prakashnadar@msn.com
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