Indy 9 HTTP Client and Authentication?

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3 total messages Started by Chris Thu, 13 Sep 2007 17:34

#159

Author: Chris
Date: Thu, 13 Sep 2007 17:34

42 lines
2250 bytes

Hi, 
    I am trying to use the IdHTTP component from Indy 9 to 
request a JPEG file from a camera server. I was using the 
CppWebBrowser component, which worked great, until I found that 
I needed to handle authentication with some servers. I already 
have the usernames and passwords stored and I just want to be 
able to pass them to the server "on-the-fly" without even 
seeing the login dialogue box. I will leave the code I was 
using with the CppWebBrowser component that does work until I 
try to access a server that requires authentication. 

If I can do Authentication with cppWebBrowser, then I will 
stick to that. I am just looking for the best solution to solve 
my current problem. If Indy HTTP Client is the best solution, 
then I will need some sample code as far as being able to 
navigate to the webpages correctly. I can't find a c++ demo and 
I am having trouble testing out the IdHTTP component.  


----------------------------------------------------------------
cppWebBrowser1->Visible = false;

String ptzUrl = "http://192.168.1.101/jpg/1/image.jpg";

WideString url = ptzUrl;
cppWebBrowser1->Navigate( url.c_bstr());

String fname = "C:\\JPGTest.jpg";

URLDownloadToFile(NULL,ptzUrl.c_str(),fname.c_str(),0,NULL);

if(FileExists(fname)){
       Image1->Picture->LoadFromFile(fname);

       DeleteFile(fname); 
}
---------------------------------------------------------------

Thanks,

Chris

Re: Indy 9 HTTP Client and Authentication?

#160

Author: Remy Lebeau (TeamB)
Date: Thu, 13 Sep 2007 18:37

60 lines
2379 bytes

"Chris" <chris@privacy.com> wrote in message
news:46e974aa$1@newsgroups.borland.com...

> I already have the usernames and passwords stored and I
> just want to be able to pass them to the server "on-the-fly"
> without even seeing the login dialogue box.

Use the TIdHTTP's Request->Username and Request->Password properties, ie:

    {
        AnsiString fname = "C:\\JPGTest.jpg";

        TFileStream *image = new TFileStream(fname, fmCreate);
        try
        {
            IdHTTP1->Request->Username = "whatever";
            IdHTTP1->Request->Password = "whatever";
            IdHTTP1->Get("http://192.168.1.101/jpg/1/image.jpg", image);
        }
        __finally {
            delete image;
        }

        try {
            Image1->Picture->LoadFromFile(fname);
        }
        __finally {
            DeleteFile(fname);
        }
    }

Alternatively:

    {
        TMemoryStream *image = new TMemory;
        try
        {
            IdHTTP1->Request->Username = "whatever";
            IdHTTP1->Request->Password = "whatever";
            IdHTTP1->Get("http://192.168.1.101/jpg/1/image.jpg", image);
            image->Position = 0;

            TJPEGImage *jpg = new TJPEGImage;
            try
            {
                jpg->LoadFromStream(image);
                Image1->Picture->Assign(jpg);
            }
            __finally {
                delete jpg;
            }
        }
        __finally {
            delete image;
        }
    }


Gambit

Re: Indy 9 HTTP Client and Authentication?

#161

Author: Chris
Date: Thu, 13 Sep 2007 20:12

7 lines
929 bytes

  That helps a lot... I am having some socket issues with it, 
but I am finding ways of handling them. 

Thanks,

Chris

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