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lib/protocol: Revert protobuf encoder changes in v0.14.17 (fixes #3855)

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The protobuf encoder now produces packed arrays for things like []int32,
which is actually correct according to the proto3 spec. However
Syncthing v0.14.16 and earlier doesn't support this. This reverts the
encoding change, but keeps the updated decoder so that we are both more
compatible with other proto3 implementations and can move to the updated
encoder in the future.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3856
This commit is contained in:
Jakob Borg
2017-01-01 17:19:00 +00:00
parent 69ae4aa024
commit 6809d38cde
3 changed files with 40 additions and 21 deletions
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25
lib/protocol/bep.pb.go
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@@ -383,7 +383,7 @@ type FileDownloadProgressUpdate struct {
UpdateType FileDownloadProgressUpdateType `protobuf:"varint,1,opt,name=update_type,json=updateType,proto3,enum=protocol.FileDownloadProgressUpdateType" json:"update_type,omitempty"`
Name string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
Version Vector `protobuf:"bytes,3,opt,name=version" json:"version"`
BlockIndexes []int32 `protobuf:"varint,4,rep,packed,name=block_indexes,json=blockIndexes" json:"block_indexes,omitempty"`
BlockIndexes []int32 `protobuf:"varint,4,rep,name=block_indexes,json=blockIndexes" json:"block_indexes,omitempty"`
}
func (m *FileDownloadProgressUpdate) Reset() { *m = FileDownloadProgressUpdate{} }
@@ -1163,22 +1163,11 @@ func (m *FileDownloadProgressUpdate) MarshalTo(data []byte) (int, error) {
}
i += n3
if len(m.BlockIndexes) > 0 {
data5 := make([]byte, len(m.BlockIndexes)*10)
var j4 int
for _, num1 := range m.BlockIndexes {
num := uint64(num1)
for num >= 1<<7 {
data5[j4] = uint8(uint64(num)&0x7f | 0x80)
num >>= 7
j4++
}
data5[j4] = uint8(num)
j4++
for _, num := range m.BlockIndexes {
data[i] = 0x20
i++
i = encodeVarintBep(data, i, uint64(num))
}
data[i] = 0x22
i++
i = encodeVarintBep(data, i, uint64(j4))
i += copy(data[i:], data5[:j4])
}
return i, nil
}
@@ -1568,11 +1557,9 @@ func (m *FileDownloadProgressUpdate) ProtoSize() (n int) {
l = m.Version.ProtoSize()
n += 1 + l + sovBep(uint64(l))
if len(m.BlockIndexes) > 0 {
l = 0
for _, e := range m.BlockIndexes {
l += sovBep(uint64(e))
n += 1 + sovBep(uint64(e))
}
n += 1 + sovBep(uint64(l)) + l
}
return n
}