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knowing download speed and ProgressIndicator [message #16918]

Mon, 21 July 2008 07:24

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

hello again

i want to make a function that download files and also shows the download speed and shows the progress in a progress bar .... and also dont make the program stop Very Happy

Very Happy

( i mean multithreading )

now i can download files using


HttpClient client;
String url = attachments.GetData();
client.URL ( url );
String content;
content = client.ExecuteRedirect ( HttpClient::DEFAULT_MAX_REDIRECT, HttpClient::DEFAULT_RETRIES);
SaveFile ( "file" + FormatInt ( file_num ), content );

and i can open it in a new thread but now i want to show download speed and progress bar

and i want the progress bar to be ProgressIndecatior

thanks in advance and i am sorry for my many questions

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Re: knowing download speed and ProgressIndicator [message #16949 is a reply to message #16918]

Tue, 22 July 2008 17:32

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

why no one answered me ??

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Re: knowing download speed and ProgressIndicator [message #16950 is a reply to message #16918]

Tue, 22 July 2008 17:44

mrjt
Messages: 705
Registered: March 2007
Location: London

Contributor

Simplest way (do this in the main thread):

Progress progress("Downloading file...");
HttpClient client;
String url = attachments.GetData();
client.URL ( url );
String content;
content = client.ExecuteRedirect ( HttpClient::DEFAULT_MAX_REDIRECT, HttpClient::DEFAULT_RETRIES, progress);
SaveFile ( "file" + FormatInt ( file_num ), content );

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Re: knowing download speed and ProgressIndicator [message #16953 is a reply to message #16950]

Tue, 22 July 2008 21:11

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

no ..... i know that

but i want to do more than one download a time and also know the download speed

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Re: knowing download speed and ProgressIndicator [message #16956 is a reply to message #16953]

Wed, 23 July 2008 10:20

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

TeCNoYoTTa wrote on Tue, 22 July 2008 15:11

no ..... i know that

but i want to do more than one download a time and also know the download speed

The you have to add some

bool Method(int, int)

to your class and direct the callback there.

Mirek

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Re: knowing download speed and ProgressIndicator [message #16960 is a reply to message #16956]

Wed, 23 July 2008 12:59

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

i am sorry .....but please more explanation .....i am sorry

i will try and also wait for more explanation

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Re: knowing download speed and ProgressIndicator [message #16961 is a reply to message #16960]

Wed, 23 July 2008 13:05

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

i mean that this function

content = client.ExecuteRedirect ( HttpClient::DEFAULT_MAX_REDIRECT, HttpClient::DEFAULT_RETRIES);

download all the file once

so i want to know if there is other function or another way

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Re: knowing download speed and ProgressIndicator [message #16962 is a reply to message #16918]

Wed, 23 July 2008 13:41

mr_ped
Messages: 826
Registered: November 2005
Location: Czech Republic - Praha

Experienced Contributor

Run new thread/instance of HttpClient for every URL you want to download together.

Create your own progress indicator with "bool MethodToGatherData(int, int)" in it.

Set this method as callback to every HttpClient during ExecuteRedirect call.

In that method find out a way to gather multiple data from different threads, calculate some nice numbers out of them, and show them as progress bar.

No source code this time, I'm too new into this topic to write it from head, and I have to work on different things. I think that's the reason for slow answers from others too, while you are free to ask, others are free to (not) answer, as their free time and skill allows them. If you want to learn C++,U++ and do your own application, just study hard and have patience (and keep asking, but also keep searching for answer on your own). If you want the app done fast, pay Mirek or some skilled other UPP developer. Smile

Smile

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Re: knowing download speed and ProgressIndicator [message #17157 is a reply to message #16962]

Thu, 31 July 2008 20:22

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

thanks all

i did this but there is an error

void Download_Manager_Window::progress_indecator(int x, int all)
{
	static int timer = 0;
	static int data = 0;
	progress_bar.Set(x,all);
	timer = clock() - timer;
	data = x - data;
	label_DownloadSpeed.SetText(DblStr((data/timer) * 1.0 ) + " KB/S");
	
	timer = clock();
	data = x;
}
void Download_Manager_Window::Download_File(String link)
{
	client.URL(link);
	client.Execute(THISBACK( progress_indecator ));
}

this is the error
D:\Program Files\MyApps\CISL\main.cpp:57: error: 'progress_indecator' is not a member of 'Upp::TopWindow'

[Updated on: Thu, 31 July 2008 20:25]

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Re: knowing download speed and ProgressIndicator [message #17161 is a reply to message #17157]

Fri, 01 August 2008 08:41

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

You need to add

struct Download_Manager_Window {
....
     typedef Download_Manager_Window CLASSNAME;
....
};

Mirek

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Re: knowing download speed and ProgressIndicator [message #17168 is a reply to message #17161]

Fri, 01 August 2008 09:17

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

thanks

i tried what you said but there still errors this is the code

void Download_Manager_Window::progress_indecator(int x, int all)
{
	static int timer = 0;
	static int data = 0;
	progress_bar.Set(x,all);
	timer = clock() - timer;
	data = x - data;
	label_DownloadSpeed.SetText(DblStr((data/timer) * 1.0 ) + " KB/S");
	
	timer = clock();
	data = x;
}
void Download_Manager_Window::Download_File(String link)
{
	client.URL(link);
	client.ExecuteRedirect(HttpClient::DEFAULT_MAX_REDIRECT,HttpClient::DEFAULT_RETRIES,THISBACK( progress_indecator ));
}

and this is the error

D:\Program Files\MyApps\CISL\main.cpp: In member function 'void Download_Manager_Window::Download_File(Upp::String)':
D:\Program Files\MyApps\CISL\main.cpp:60: error: no matching function for call to 'Upp::HttpClient::ExecuteRedirect(Upp::HttpClient::<anon
ymous enum>, Upp::HttpClient::<anonymous enum>, Upp::Callback2<int, int>)'
D:\Program Files\upp\uppsrc/Web/httpcli.h:41: note: candidates are: Upp::String Upp::HttpClient::ExecuteRedirect(int, int, Upp::Gate2<int,
int>)

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Re: knowing download speed and ProgressIndicator [message #17181 is a reply to message #17168]

Fri, 01 August 2008 11:57

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

bool Download_Manager_Window::progress_indecator(int x, int all)

returning true will break the process.

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Re: knowing download speed and ProgressIndicator [message #17183 is a reply to message #17181]

Fri, 01 August 2008 15:25

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

thanks luzr ...... i am sorry as i have a lot of questions

but now the program works but does no thing

i did this

bool Download_Manager_Window::progress_indecator ( int x, int all )
{
	static int timer = 0;
	static int data = 0;
	progress_bar.Set ( x, all );
	timer = clock() - timer;
	data = x - data;
	label_DownloadSpeed.SetText ( DblStr ( ( data / timer ) * 1.0 ) + " KB/S" );

	timer = clock();
	data = x;
	if (x == all)
		return true;
	else
		return false;
}

void Download_Manager_Window::Download_File ( String link )
{
	client.URL ( link );
	String file = client.ExecuteRedirect ( HttpClient::DEFAULT_MAX_REDIRECT, HttpClient::DEFAULT_RETRIES, THISBACK ( progress_indecator ) );

}

and opened it in a thread like this

(new Thread)->Run ( THISBACK1 ( Download_File, "http://cisclub.com/tecno/bta3/vector.rar" ) );

but no thing happen :S :S ...... the window opens and just do nothing

and this is the constructer of the windows which download

Download_Manager_Window::Download_Manager_Window()
{
	CtrlLayout ( *this, "Download" );
	label_DownloadDirectory.SetReadOnly();
	(new Thread)->Run ( THISBACK1 ( Download_File, "http://cisclub.com/tecno/bta3/vector.rar" ) );
}

thanks in advance and i am waiting your response

and sorry for my continuous asking

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Re: knowing download speed and ProgressIndicator [message #17187 is a reply to message #17183]

Fri, 01 August 2008 17:12

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

please if there is a manual for Web library tell me about it

i want to know what is these arguments for

and i think it's working now but with strange errors ( x == all at first and progress bar some times restart )

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Re: knowing download speed and ProgressIndicator [message #17188 is a reply to message #17187]

Fri, 01 August 2008 17:28

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

and here is a problem

the program works well and download ....and while downloading it get out of the function .....not only that ......but the function which downloads the file returns nothing

String down_file = client.ExecuteRedirect ( HttpClient::DEFAULT_MAX_REDIRECT, HttpClient::DEFAULT_RETRIES, THISBACK ( progress_indecator ) );

so the file size is zero :S :S

please help me

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Re: knowing download speed and ProgressIndicator [message #17192 is a reply to message #17183]

Fri, 01 August 2008 21:39

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

Why Thread?

Mirek

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Re: knowing download speed and ProgressIndicator [message #17196 is a reply to message #17192]

Fri, 01 August 2008 23:42

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

thanks for your reply

i use threads so that i can update the GUI ( progress bar / download speed) with out making the program lags

also i want people to can use the program while it's downloading

but i dont know why this errors happen and i dont know why it stop downloading after 2.5 MB as i think and where can i find documentation for these functions

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Re: knowing download speed and ProgressIndicator [message #17197 is a reply to message #17196]

Sat, 02 August 2008 00:38

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

i tested it on small file (about 150 KB) and it worked very well

but with the first file (about 5MB) it stopped at 2.5 MB as i think

thanks in advance

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Re: knowing download speed and ProgressIndicator [message #17218 is a reply to message #17197]

Sun, 03 August 2008 10:56

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

Sad

Sad

Sad

then there is no documentation ......so please help me or tell me a way to know how to know there uses Sad

Sad

Sad

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Re: knowing download speed and ProgressIndicator [message #17226 is a reply to message #17196]

Sun, 03 August 2008 14:13

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

TeCNoYoTTa wrote on Fri, 01 August 2008 17:42

thanks for your reply

i use threads so that i can update the GUI ( progress bar / download speed) with out making the program lags

That is the reason why there is the Gate callback. You are supposed to update GUI in it.

Also, note that there are severe limitation what you can do in multi-threading (basically, only one main GUI thread is allowed).

Mirek

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Re: knowing download speed and ProgressIndicator [message #17228 is a reply to message #17197]

Sun, 03 August 2008 14:14

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

TeCNoYoTTa wrote on Fri, 01 August 2008 18:38

i tested it on small file (about 150 KB) and it worked very well

but with the first file (about 5MB) it stopped at 2.5 MB as i think

thanks in advance

Hard to say. testcase please.

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Re: knowing download speed and ProgressIndicator [message #17230 is a reply to message #17228]

Sun, 03 August 2008 14:53

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

thanks Luzr for your reply

i will make more test cases and tell you

but i want to tell you what i want to do

i want to make a download manager that download files that are some times be attachments on forums
that allow visitors downloads also i want it to support pause/continue downloading

the proplem now is that the executeredirect dont complete downloading the file when the file is big

also i want to download part of file save it the download another part and save it to support
pause/continue

but executeredirect downloads all the file one piece and put it in a string variable

so these are the proplems

now i want to ask what does these functions do and what are there arguments and what they return
socket.WriteWait(const char *s,int length,int timeout_msec)
socket.Read()
socket.ReadUntil()
socket.ReadCount()

and i will get more test cases
but please help me or tell me how to find info
thanks in advance
and i am waiting your respond

[Updated on: Sun, 03 August 2008 14:55]

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Re: knowing download speed and ProgressIndicator [message #17231 is a reply to message #17230]

Sun, 03 August 2008 19:46

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

horraaaaaay

at last it worked and now bigger files can be downloaded

i just changed timeout
client.TimeoutMsecs ( 1000*60*60*60 );

but there is another proplems
1- i want to download the file part by part
2- the progress bar does some thing strange
look
it works fine

http://img262.imageshack.us/img262/156/goodju9.jpg

then ??!!!

http://img216.imageshack.us/img216/3810/badah8.jpg

thanks in advance and waiting for your help

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Re: knowing download speed and ProgressIndicator [message #17232 is a reply to message #17231]

Sun, 03 August 2008 19:59

TeCNoYoTTa
Messages: 138
Registered: July 2008
Location: Egypt

Experienced Member

another pictuers

http://img262.imageshack.us/img262/9422/goodjh3.jpg

http://img262.imageshack.us/img262/2999/badrn3.jpg

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