How do I send data with http post request?

[Morea]

I want to send a lot of data to a webpage with a post requst. The data is a username and a long message text.
I look at the QHttp class but I can't seem to find how to send all that data. I also need to read a reply from the webpage (it will reply with a simple string.
Does anyone have a good short example on this?

[wysota]

QHttp::post() (you can pass it a device to read from and to write to) or better yet use QNetworkAccessManager.

[Morea]

I'm sorry, but I'm still confused on the usage of these two. Is there any example of how to send the acctual data and receive the answer?

[wysota]

What is exactly that you don't understand? This is a single function call dependant of the source and destination of the data, so I'm not sure what kind of example would you like to see.

QIODevice *outgoing = ...;
QIODevice *incoming = ...;
QHttp *http = ...;
// this one
connect(http, SIGNAL(done(bool)), ...);
// or this one
connect(incoming, SIGNAL(readyRead()), ...); 
// or something else...
int id = http->post("/somepath", outgoing, incoming);

QIODevice *outgoing = ...;
QIODevice *incoming = ...;
QHttp *http = ...;
// this one
connect(http, SIGNAL(done(bool)), ...);
// or this one
connect(incoming, SIGNAL(readyRead()), ...); 
// or something else...
int id = http->post("/somepath", outgoing, incoming);

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[Morea]

Well, first of all, I want to send data to a php page so that the php page can read values from the POST variables $_POST['foo'] $_POST['bar'] (excuse me for the php code).

[wysota]

And the problem is you don't know how to format the data, right? Sorry but this is out of scope of this forum. I suggest you take a network sniffer such as iptraf, ettercap or tcpdump, send a post request to some php page and see how the data is formatted.

[Morea]

Yes that's probably it. Thanks anyway.

[Morea]

Ah, I think I've solved it now.

QByteArray* ba=new QByteArray("a=aaa&b=bbb&ok=ok");
const QString s("/url.php  Accept: text/html, text /plain, text/css, text/sgml, */* ;q=0.01\nAccept-Encoding : gzip, bzip2\nAccept-Language: en\nPragma: no-cache\nCache-Control: no-cache\nUser-Agent: Foobar\nReferer: http://localhost /a.php\nContent-type:application/x-www-form-urlencoded\nContent-lentgh::17\n");
QHttpobject->post( s, *ba);

QByteArray* ba=new QByteArray("a=aaa&b=bbb&ok=ok");
const QString s("/url.php  Accept: text/html, text /plain, text/css, text/sgml, */* ;q=0.01\nAccept-Encoding : gzip, bzip2\nAccept-Language: en\nPragma: no-cache\nCache-Control: no-cache\nUser-Agent: Foobar\nReferer: http://localhost /a.php\nContent-type:application/x-www-form-urlencoded\nContent-lentgh::17\n");
QHttpobject->post( s, *ba);

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[wysota]

The headers should be in the data section, not the path section. The path should only contain "/url.php".

[Morea]

Well, I couldn't make it work if I put it in the data section. The parameters were not received in the webserver.

[wysota]

Did you remember about the extra newline after the last header?