you can achieve this using an io.Pipe. The io.Pipe function returns a connected pair of *PipeReader and *PipeWriter, where writes to the *PipeWriter are directly read from the *PipeReader. The Write call on the *PipeWriter will block until the data is read from the *PipeReader.
pr, pw := io.Pipe() Pass the pr as the body and write to the pw. On Wed, Mar 22, 2023, 7:06 PM 'Jim Smart' via golang-nuts < golang-nuts@googlegroups.com> wrote: > The issue here, isn’t that I am uploading a big file — that’s easy. > > As I said in my initial post: > > > The use case here is that I'm wishing to send very large UPDATE/INSERT > queries/commands to an HTTP endpoint, and the body content of those > queries/commands is actually generated from a database. > > The content I wish to push to the server, is /generated/ content. So > really what I want is a something I can directly write into. > > I am trying to avoid generating my upload content into a buffer first. > Because the data can be very large. > > — It’s easy to say “write a reader” but writing it as a reader involves > doing complete inversion of control on my code, and isn’t really feasible. > I can’t easily make the code I have which has complex logic to build the > upload data using Writes, into something that is then driven by Reads. > > Which is why I asked if it was possible to somehow Write straight down the > connection. > > > — Thanks for the suggestions all the same. > > /J > > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/C5B2823D-2458-4F91-A09D-6B12F74CD8B3%40jimsmart.org > . > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CA%2Bh8R2pTUXsWPpywxhRJi_Bs3ZP0hmVP%3DkqZMe6FwJWJS-3BDg%40mail.gmail.com.
