net,os: set the theoretical unlimited remaining bytes to max int64

Based on https://go-review.googlesource.com/c/go/+/466015/comment/073a63fa_7a9e485f Change-Id: I3e1b035de6b8217c5fa5695e436f164b3058e33c Reviewed-on: https://go-review.googlesource.com/c/go/+/471439 TryBot-Result: Gopher Robot <[email protected]> Reviewed-by: Ian Lance Taylor <[email protected]> Auto-Submit: Ian Lance Taylor <[email protected]> Run-TryBot: Andy Pan <[email protected]> Run-TryBot: Ian Lance Taylor <[email protected]> Reviewed-by: Bryan Mills <[email protected]>
cloudflare · Feb 28, 2023 · af2bc6d · af2bc6d
1 parent 81cd9ff
commit af2bc6d
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/src/net/sendfile_linux.go b/src/net/sendfile_linux.go
@@ -18,7 +18,7 @@ import (
 //
 // if handled == false, sendFile performed no work.
 func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
- var remain int64 = 1 << 62 // by default, copy until EOF
+ var remain int64 = 1<<63 - 1 // by default, copy until EOF
 
  lr, ok := r.(*io.LimitedReader)
  if ok {

diff --git a/src/net/splice_linux.go b/src/net/splice_linux.go
@@ -15,7 +15,7 @@ import (
 //
 // If splice returns handled == false, it has performed no work.
 func splice(c *netFD, r io.Reader) (written int64, err error, handled bool) {
- var remain int64 = 1 << 62 // by default, copy until EOF
+ var remain int64 = 1<<63 - 1 // by default, copy until EOF
  lr, ok := r.(*io.LimitedReader)
  if ok {
  remain, r = lr.N, lr.R

diff --git a/src/os/readfrom_linux.go b/src/os/readfrom_linux.go
@@ -112,7 +112,7 @@ func (f *File) copyFileRange(r io.Reader) (written int64, handled bool, err erro
 // the underlying io.Reader and the remaining amount of bytes if the assertion succeeds,
 // otherwise it just returns the original io.Reader and the theoretical unlimited remaining amount of bytes.
 func tryLimitedReader(r io.Reader) (*io.LimitedReader, io.Reader, int64) {
- remain := int64(1 << 62)
+ var remain int64 = 1<<63 - 1 // by default, copy until EOF
 
  lr, ok := r.(*io.LimitedReader)
  if !ok {