response.on('data', ...)
can accept a Buffer
, not just plain strings. When concatenating you are converting to string incorrectly, and then later can’t gunzip. You have 2 options:
1) Collect all the buffers in an array, and in the end
event concatentate them using Buffer.concat()
. Then call gunzip on the result.
2) Use .pipe()
and pipe the response to a gunzip object, piping the output of that to either a file stream or a string/buffer string if you want the result in memory.
Both options (1) and (2) are discussed here: http://nickfishman.com/post/49533681471/nodejs-http-requests-with-gzip-deflate-compression