[go-nuts] handling io.Reader of unknown length

[Nick Cronin]

I'm doing a simple http.Get request where the server does not provide
a Content-Length header and as such the Response.ContentLength is set
to -1. Unfortunately this is the first time I've encountered this
problem in a language that requires the buffer that is reading the
body of a Response to have a pre-defined length. Rather than do it
badly (such as just pre-defining a massive buffer) I was hoping for an
example of the best way to handle such a problem. My best guess is to
loop through the Reader using io.ReadFull with a buffer of say 1024
bytes until io.ErrUnexpectedEOF is hit.

Thanks


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[Russ Cox]

If you don't mind reading it all into memory, use io.ReadAll.

Russ

[Nick Cronin]

I did see a reference somewhere of io.ReadAll when I was looking but
couldn't find it in the docs. You mentioning it now made me think I
should look again. It's actually in io/ioutil - thank you