d0zingcat/gocryptotrader
1
0
Fork 0
mirror of https://github.com/d0zingcat/gocryptotrader.git synced 2026-05-22 07:26:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

websocket: Check for slice size to avoid panic when classifying empty binary message (#1219)

Browse Source 
* Check for slice size to avoid panic when classifying empty resp

* Simplify according to suggestion
This commit is contained in:
TaltaM
2023-06-09 01:24:33 +02:00
committed by GitHub
parent bb449c2085
commit a024ad53ae
2 changed files with 16 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
exchanges/stream/websocket_connection.go
View File

@@ -268,36 +268,21 @@ func (w *WebsocketConnection) ReadMessage() Response {
// parseBinaryResponse parses a websocket binary response into a usable byte array
func (w *WebsocketConnection) parseBinaryResponse(resp []byte) ([]byte, error) {
var standardMessage []byte
var reader io.ReadCloser
var err error
// Detect GZIP
if resp[0] == 31 && resp[1] == 139 {
b := bytes.NewReader(resp)
var gReader *gzip.Reader
gReader, err = gzip.NewReader(b)
if len(resp) >= 2 && resp[0] == 31 && resp[1] == 139 { // Detect GZIP
reader, err = gzip.NewReader(bytes.NewReader(resp))
if err != nil {
return standardMessage, err
}
standardMessage, err = io.ReadAll(gReader)
if err != nil {
return standardMessage, err
}
err = gReader.Close()
if err != nil {
return standardMessage, err
return nil, err
}
} else {
reader := flate.NewReader(bytes.NewReader(resp))
standardMessage, err = io.ReadAll(reader)
if err != nil {
return standardMessage, err
}
err = reader.Close()
if err != nil {
return standardMessage, err
}
reader = flate.NewReader(bytes.NewReader(resp))
}
return standardMessage, nil
standardMessage, err := io.ReadAll(reader)
if err != nil {
return nil, err
}
return standardMessage, reader.Close()
}
// GenerateMessageID Creates a messageID to checkout