HTML POST Method - How To ?
Blitz3D Forums/Blitz3D Programming/HTML POST Method - How To ?
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| Hi all, I'm aware of how to perform an Html GET from within an opened TCP stream - thanks to the examples in the Code Archive. What puzzles me, is how I can effectively use the POST method, using the same technique, to send a bynary file. What I need, is how the MIME message should be formatted, in order to send it to a remote php script. I can successfully build an html form to send a file using a POST method; but I don't want to use a form, instead I want to send a file using the same POST method against an opened TCP stream. Has anybody done already something like that ? Thanks in advance, Sergio. |
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| The HTTP 1.1 RFC 2616 may help you, tho it's pretty abstract stuff. Just scroll to point 9.5, POST. http://www.rfc-editor.org/cgi-bin/rfcdoctype.pl?loc=RFC&letsgo=2616&type=http&file_format=txt I think I remember I once had a code snippet that is using POST with Blitz, but I can't find it anymore, tried hard without success. Well, this page may be more useful, scroll to POST and watch the Request Header example: http://jmarshall.com/easy/http/ Oh yes, and this: http://www.utoronto.ca/ian/books/html4ed/appb/mimetype.html http://ppewww.ph.gla.ac.uk/~flavell/www/content-type.html http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html |
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| BTW Semar, I just had this Idea: the easiest way to do this is: write a little HTTP server in Blitz. Then use a form that would upload a file trough a browser. this way you can study a real Post-Header directly. (I confess, I am still kind of confused, how is the form-elements Name transmitted for example?) |
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| Feel free to use my blitz code over at www.squeakyduck.co.uk It's lurking in the archive section. Allows HTTP get / post and can be used with proxy servers. |
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| Thanks jfk for the info links - very useful. @Blitztastic, that's a nice offer from you; I've downoladed the HTTP get/post bb source from your web site. I find it interesting; anyway, it's not quite what I need - no offense at all ! I'm trying to build up a simple POST method request, to be sent to an apache web server, from within a blitz application. So far, I can send a file using a submission form from within IE, but I can't see what really IE sends to the web server. Perhaps I need to build up a self-made http server, and re-direct the IE submission form to it, so I can inspect the header sent. Anyway. I've found some interesting documentation about the POST header which is sent from a php script, using a socket; so, using a TCP socket from within Blitz, it should be quite the same: fwrite($sock, "POST /form_action.php HTTP/1.0\r\n"); fwrite($sock, "Host: secure.example.com\r\n"); fwrite($sock, "Content-type: application/x-www-form-urlencoded\r\n"); fwrite($sock, "Content-length: " . strlen($data) . "\r\n"); fwrite($sock, "Accept: */*\r\n"); fwrite($sock, "\r\n"); fwrite($sock, "$data\r\n"); fwrite($sock, "\r\n"); The key is, now, to translate the above code in the related Blitz syntax. Write on the socket is trivial, using the Blitz stream commands. But I'm a bit concerned about the 'urlencoded' bit, and how to send the data. I guess reading the file to transfer, and writing it on the stream. But... Could anyone enlight me on this purpose ? I just want to upload - via POST method - a small audio file from within a Blitz program to an apache web server. Thanks for your attention anyway. Sergio. |
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| If you want to urlencode something : http://www.blitzbasic.com/codearcs/codearcs.php?code=894 But the code you gave above doesn't actually use PHP's urlencode function, it just tells that the content type is urlencoded. I don't think you'll need to urlencode anything if you're only sending a file. If you're sending other data, it may be necessary. |
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| Yes fall_x, you're right, I don't need to urlencode anything; that was only an example of the POST header which I've found while surfing the net. I just need to know how to build up a simple header to send a file with the POST method from within Blitz; so far, I'm pulling my hair out !!!! :-/ Sergio. |
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| @Blitztastic, that's a nice offer from you; I've downoladed the HTTP get/post bb source from your web site. I find it interesting; anyway, it's not quite what I need - no offense at all ! Not a problem, but I would have thought it would only take a small tweak to the final example to get something working. I did have a link for the format for file upload, (long time ago when I wrote that library), and it pretty much consisted of adding a few lines to the header. something along the lines of: -------------------------<randomnumbers> some header stuff file data -------------------------<randomnumbers> |
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| Again, thank you Blitztastic for your inputs. The best solution - so far - was to follow the jfk EO-11110 suggestion; so I've build up a simple HTTP server in Blitz, and I've successfully dumped what is sent to a web server, when a POST method is submitted from a form. And guess what ? In few minutes I've implemented a POST method from within Blitz, and it works like a charm ! Thanks to all for the help, Sergio. |
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| Please add it to the code archives :) So we all can save our hair and time ;) |
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| just a reminder - semar, pleeease share da code with us. |
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