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Getting a file from another host in C

gambito042797
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Last Modified: 2013-12-23
I want that my C program reads a file located in another host,  passing it  the URL location as parameter.
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pxh

Commented:
What server function does the other host have?

Author

Commented:
I need the necesary instructions to make my program behaves as does a browser. For example, if you type in a browser http://www.host.xxx/path/filename.gif, then you get in the browser that file, wathever SO and functions the server you adressed has, well, that server must have a Web Server serving those files. I think this must be done by doing that my program send a CGI request such as

GET /docX.html HTTP/1.0
Accept: www/source
Accept: text/html
Accept: image/gif
User-Agent:  Lynx/2.2  libwww/2.14
From:  myname@myhost.xxx
     * blank line *

and then the program must receive an answer from the server similar to this one:

HTTP/1.0 200 OK
Date: Monday, 02-Feb-96 23:04:12 GMT
Server: NCSA/1.1
MIME-version: 1.0
Last-modified: Monday, 15-May-96 23:33:16 GMT
Content-type: text/html
Content-length: 2345
     * blank line *
<HTML><HEAD><TITLE> . . . the HTML page


I do know how to implement the server CGI part, but what I want is to implement the client behavior in my program (not a full browser, only be able to get a file from another server), that is, how does my program has to send the request and how does it has to wait for the answer.


This just involves a bit of socket programming - it's like a client which telnets to port 80 of a server machine.

But, are you aware that, when a web server sends, say, an image, it usually sends it encoded?

-julio

Author

Commented:
Yes, I've put above the encoding. The difference in image files is the line Content-type that will be:

Content-type: image/gif

and after the blank line will come the binary data of the file instead of the code for an html page. But thanks.
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Author

Commented:
It worked!!!  I changed  the host and the path and worked fine.
Thanks a lot Julio.
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