syncthing/lib/protocol/nativemodel_windows.go
Jakob Borg c6334e61aa
all: Support multiple device connections (fixes #141) (#8918)
This adds the ability to have multiple concurrent connections to a single device. This is primarily useful when the network has multiple physical links for aggregated bandwidth. A single connection will never see a higher rate than a single link can give, but multiple connections are load-balanced over multiple links.

It is also incidentally useful for older multi-core CPUs, where bandwidth could be limited by the TLS performance of a single CPU core -- using multiple connections achieves concurrency in the required crypto calculations...

Co-authored-by: Simon Frei <freisim93@gmail.com>
Co-authored-by: tomasz1986 <twilczynski@naver.com>
Co-authored-by: bt90 <btom1990@googlemail.com>
2023-09-06 12:52:01 +02:00

80 lines
1.9 KiB
Go

// Copyright (C) 2014 The Protocol Authors.
//go:build windows
// +build windows
package protocol
// Windows uses backslashes as file separator
import (
"fmt"
"path/filepath"
"strings"
)
func makeNative(m rawModel) rawModel { return nativeModel{m} }
type nativeModel struct {
rawModel
}
func (m nativeModel) Index(folder string, files []FileInfo) error {
files = fixupFiles(files)
return m.rawModel.Index(folder, files)
}
func (m nativeModel) IndexUpdate(folder string, files []FileInfo) error {
files = fixupFiles(files)
return m.rawModel.IndexUpdate(folder, files)
}
func (m nativeModel) Request(folder, name string, blockNo, size int32, offset int64, hash []byte, weakHash uint32, fromTemporary bool) (RequestResponse, error) {
if strings.Contains(name, `\`) {
l.Warnf("Dropping request for %s, contains invalid path separator", name)
return nil, ErrNoSuchFile
}
name = filepath.FromSlash(name)
return m.rawModel.Request(folder, name, blockNo, size, offset, hash, weakHash, fromTemporary)
}
func fixupFiles(files []FileInfo) []FileInfo {
var out []FileInfo
for i := range files {
if strings.Contains(files[i].Name, `\`) {
msg := fmt.Sprintf("Dropping index entry for %s, contains invalid path separator", files[i].Name)
if files[i].Deleted {
// Dropping a deleted item doesn't have any consequences.
l.Debugln(msg)
} else {
l.Warnln(msg)
}
if out == nil {
// Most incoming updates won't contain anything invalid, so
// we delay the allocation and copy to output slice until we
// really need to do it, then copy all the so-far valid
// files to it.
out = make([]FileInfo, i, len(files)-1)
copy(out, files)
}
continue
}
// Fixup the path separators
files[i].Name = filepath.FromSlash(files[i].Name)
if out != nil {
out = append(out, files[i])
}
}
if out != nil {
// We did some filtering
return out
}
// Unchanged
return files
}