Monks,

I have a problem. I am using LWP to obtain an HTML page from a remote server, I need to be able to display the content as it arrives so I provide a callback CODE ref to LWP::UserAgent->get(). I am also bandwidth-limited, so I request that the remote server gzips its response.

Example callback sub:

sub HttpContentCallback {
  my($data,$response,$protocol) = @_;
  print $data;
}

[download]

The data comes in one chunk at a time. How do I decompress this data one chunk at a time? I have looked at Compress::Zlib and IO::Uncompress::Gunzip and neither of these seem to do what I want. I tried passing a scalar ref to IO::Uncompress::Gunzip's constructor and on each callback appending the received data to this scalar before calling $gz->read($buffer), but this doesn't work (it tries to read the whole scalar then moans about unexpected end of stream). It also attempts to read the scalar on instantiation meaning I have to defer that until I actually have some data, which is pretty inconvenient.

Surely someone must have managed this before me! Looking forward to any assistance you can provide :)

In reply to uncompress gzip data in a callback by Weevil

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