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Fix bug in json framer.

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This commit is contained in:
Wojciech Tyczynski 2016-05-04 11:35:06 +02:00
parent 3aadafd411
commit 11849e232e
1 changed files with 2 additions and 1 deletions
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3
pkg/util/framer/framer.go
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@ -145,6 +145,7 @@ func (r *jsonFrameReader) Read(data []byte) (int, error) {
// RawMessage#Unmarshal appends to data - we reset the slice down to 0 and will either see // RawMessage#Unmarshal appends to data - we reset the slice down to 0 and will either see
// data written to data, or be larger than data and a different array. // data written to data, or be larger than data and a different array.
n := len(data)
m := json.RawMessage(data[:0]) m := json.RawMessage(data[:0])
if err := r.decoder.Decode(&m); err != nil { if err := r.decoder.Decode(&m); err != nil {
return 0, err return 0, err
@ -153,7 +154,7 @@ func (r *jsonFrameReader) Read(data []byte) (int, error) {
// If capacity of data is less than length of the message, decoder will allocate a new slice // If capacity of data is less than length of the message, decoder will allocate a new slice
// and set m to it, which means we need to copy the partial result back into data and preserve // and set m to it, which means we need to copy the partial result back into data and preserve
// the remaining result for subsequent reads. // the remaining result for subsequent reads.
if n := cap(data); len(m) > n { if len(m) > n {
data = append(data[0:0], m[:n]...) data = append(data[0:0], m[:n]...)
r.remaining = m[n:] r.remaining = m[n:]
return n, io.ErrShortBuffer return n, io.ErrShortBuffer