Re: FW: Java Error

BTW, reading GRIB files will likely be intolerably slow through HTTP range 
requests. Only Netcdf
files are really structured well to count on this.

David Stuebe wrote:
> 
> As an example, I just hit this file on thredds motherlode and I get the
> same response:
> 
> HTTPServer:http://motherlode.ucar.edu:8080/thredds/fileServer/fmrc/NCEP/
> NAM/Alaska_11km/files/NAM_Alaska_11km_20090204_1200.grib2
> 
> java.io.IOException: Server does not support byte Ranges
>       at
> ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.ja
> va:123)
>       at
> ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.ja
> va:94)
>       at ucar.nc2.NetcdfFile.getRaf(NetcdfFile.java:441)
>       at ucar.nc2.NetcdfFile.open(NetcdfFile.java:347)
>       at
> ucar.nc2.dataset.NetcdfDataset.openOrAcquireFile(NetcdfDataset.java:622)
>       at
> ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:500)
>       at ucar.nc2.ui.ToolsUI$NCdumpPanel.run(ToolsUI.java:1214)
>       at ucar.nc2.ui.ToolsUI$GetDataTask.run(ToolsUI.java:3098)
>       at java.lang.Thread.run(Unknown Source)
> 
> 
> 
> 
> -----Original Message-----
> From: John Caron [mailto:address@hidden] 
> Sent: Wednesday, February 04, 2009 12:21 PM
> To: David Stuebe
> Cc: Jennifer Read; Guy De Wardener; address@hidden
> Subject: Re: FW: Java Error
> 
> see
> 
> http://www.unidata.ucar.edu/software/netcdf-java/reference/HTTPservice.h
> tml
> 
> David Stuebe wrote:
>> Hi John
>>
>> CC Jenn, Guy
>>
>> I have run into a problem accessing files on HTTP servers using netcdf
> 
>> Java. I get this error: Server does not support byte Ranges
>>
>> The strange part is that the error only occurs when accessing the 
>> files from ASA. Specifically when I take my laptop home and make the 
>> same NETCDF JAVA request from my house it works fine. Similarly local 
>> files, or files hosted inside the ASA network are fine. There is 
>> something funny about the fire wall or our service provider but we 
>> can't seem to figure out what. Have you run into this before?
>>
>> Let me know if you have any ideas
>>
>> Thanks
>>
>> David Stuebe
>>
>> *From:* Jennifer Read
>> *Sent:* Tuesday, February 03, 2009 10:33 AM
>> *To:* Jennifer Read; Guy De Wardener
>> *Cc:* David Stuebe
>> *Subject:* RE: Java Error
>>
>> We tested with this address: 
>>
> http://science.whoi.edu/users/kestons/redtide_2005_hindcast/OUT/avg_gom_
> 0014.nc 
>> using java NetCDF (One ring to bind them).
>>
>> *From:* Jennifer Read
>> *Sent:* Tuesday, February 03, 2009 10:22 AM
>> *To:* Guy De Wardener
>> *Cc:* David Stuebe
>> *Subject:* Java Error
>>
>> So, Dave is getting this error:
>>
>> java.io.IOException: Server does not support byte Ranges
>>
>> at 
>>
> ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.ja
> va:123)
>> at 
>>
> ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.ja
> va:94)
>> at ucar.nc2.NetcdfFile.getRaf(NetcdfFile.java:441)
>>
>> at ucar.nc2.NetcdfFile.open(NetcdfFile.java:347)
>>
>> at 
>>
> ucar.nc2.dataset.NetcdfDataset.openOrAcquireFile(NetcdfDataset.java:622)
>> at ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:500)
>>
>> at ucar.nc2.ui.ToolsUI$NCdumpPanel.run(ToolsUI.java:1214)
>>
>> at ucar.nc2.ui.ToolsUI$GetDataTask.run(ToolsUI.java:3098)
>>
>> at java.lang.Thread.run(Unknown Source)
>>
>> When he tries to connect from inside ASA to another source. It works 
>> outside (at home) and it works inside if he's connecting inside. I'm 
>> having him see what happens if he uses wireless and tries to connect. 
>> It isn't a firewall issue- there have been no firewall changes in the 
>> past long time.
>>