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POAndroid URLConnection class cannot get content lenght using 3G internet connection
primarykey
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8308930
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AcceptedAnswerId
8309820
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3
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1
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CreationDate
2011-11-29T10:05:28.267
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0
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2011-12-04T11:07:37.920
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2011-11-29T11:28:57.217
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291427
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291427
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0
PostTypeId
1
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0
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1092
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text
Body
I've got the following piece of code: <pre><code>URL url = new URL("http://myserver.com/getFile.php"); URLConnection conexion = url.openConnection(); conexion.connect(); int lenghtOfFile = conexion.getContentLength(); </code></pre> Everything works fine until I work with WiFi connection. If I try to run this code when there is only GPRS/3G connection available, <code>conexion.getContentLength()</code> returns -1. Any idea why? EDIT: I've check the headers using getHeaderFields(). They are different if I use 3G network. Basically there is no Content-Length in this case. Any idea why server returns different headers? I'm not using any special script to provide the file, I only get the file that is placed at given location. Entire header for the WiFi case: {Accept-Ranges=[bytes], Connection=[Keep-Alive], Content-Length=[628254], Content-Type=[text/plain; charset=UTF-8], Date=[Tue, 29 Nov 2011 11:22:50 GMT], ETag=["7a0c7-9961e-4af3f38778500"], Keep-Alive=[timeout=15], Last-Modified=[Fri, 14 Oct 2011 09:52:52 GMT], Server=[Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny9 with Suhosin-Patch mod_python/3.3.1 Python/2.6.6 mod_ssl/2.2.9 OpenSSL/0.9.8o mod_wsgi/3.3 mod_perl/2.0.4 Perl/v5.10.0]} Entire header for the case when using 3G: {Accept-Ranges=[bytes], Connection=[Keep-Alive], Content-Type=[text/plain; charset=UTF-8], Date=[Tue, 29 Nov 2011 11:20:33 GMT], ETag=["7a0c7-9961e-4af3f38778500"], Keep-Alive=[timeout=15], Last-Modified=[Fri, 14 Oct 2011 09:52:52 GMT], Server=[Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny9 with Suhosin-Patch mod_python/3.3.1 Python/2.6.6 mod_ssl/2.2.9 OpenSSL/0.9.8o mod_wsgi/3.3 mod_perl/2.0.4 Perl/v5.10.0], Transfer-Encoding=[chunked], Warning=[214 warkaz-fe07 "Transformation applied"]}
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<android><urlconnection>
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Android URLConnection class cannot get content lenght using 3G internet connection
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