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app/vmselect/netstorage: improve error message when reading data size in readBytes

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This commit is contained in:
Aliaksandr Valialkin 2019-12-24 14:40:04 +02:00
parent c0060c5858
commit 97de50dd4c
1 changed files with 2 additions and 2 deletions
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4
app/vmselect/netstorage/netstorage.go
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@ -1305,8 +1305,8 @@ func writeBool(bc *handshake.BufferedConn, b bool) error {
func readBytes(buf []byte, bc *handshake.BufferedConn, maxDataSize int) ([]byte, error) {
buf = bytesutil.Resize(buf, 8)
if _, err := io.ReadFull(bc, buf); err != nil {
return buf, fmt.Errorf("error read data size: %s", err)
if n, err := io.ReadFull(bc, buf); err != nil {
return buf, fmt.Errorf("cannot read %d bytes with data size: %s; read only %d bytes", len(buf), err, n)
}
dataSize := encoding.UnmarshalUint64(buf)
if dataSize > uint64(maxDataSize) {