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Writing a HTTPClient

Posted on 2000-03-13
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Last Modified: 2008-03-17
Hello ,

I try to write a bot which fetches a Website by a given URL using the URL and HTTPCon. classes.
My Problem is, i am using s.th. like << while ( (byteArr = f.read()) != null) >> to check if the read packet is null or not for the while loop condition.
But with this approach I dont get the full file cause sometimes the connection is stalled and I only get half of the site. Is there a possibility which is compactible with HTTP 1.0 and 1.1 to check wether the file is full read or not

Thanx a lot for any advices and hints ...

Binh  
0
Comment
Question by:kaber
5 Comments
 

Expert Comment

by:kbeier
ID: 2614465
Hi kaber,

What about using a BufferedReader:

BufferedReader in = new BufferedReader(new InputStreamReader(MyHTTPUrlConnection.getInputStream()));

and then using:
String inputLine;
while ((inputLine = in.readLine())
{
    //do your stuff here
}

Just a suggestion.  Hope it helps.

:-)
0
 
LVL 4

Expert Comment

by:jerch
ID: 2614483
Yes, you can use the content-length header (use getContentLength() of HttpURLConnection).  But the problem not all web sites provide this information.  If the content-length is available, you can compare the size of the actual file to the content-length header.  So you would be able to determine if you were able to download the complete file.

Hope this helped...

Jerson
0
 

Expert Comment

by:zevious
ID: 2614851
Use Socket.setSoTimeout();

This might solve it...
0
 

Author Comment

by:kaber
ID: 2615639
Hi ,

kbeier your comment helps me out to solve the prob. Thanx a lot , I would give you the points, but how can I do that ?
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Accepted Solution

by:
kbeier earned 300 total points
ID: 2616012
Hi kaber,

I will post my comment as an answer for you (hopefully this will let you allocate the points ;-)).  My comment was:

What about using a BufferedReader:

BufferedReader in = new BufferedReader(new InputStreamReader(MyHTTPUrlConnection.getInputStream()));

and then using:
String inputLine;
while ((inputLine = in.readLine())
{
    //do your stuff here
}

0

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