func readRequestBody(r io.Reader, header *wire.RequestHeader, request proto.Message) error {
// recv body (end)
compressedPbRequest, err := recvFrame(r)
if err != nil {
return err
}
// checksum
if crc32.ChecksumIEEE(compressedPbRequest) != header.GetChecksum() {
return fmt.Errorf("protorpc.readRequestBody: unexpected checksum.")
}
// decode the compressed data
pbRequest, err := snappy.Decode(nil, compressedPbRequest)
if err != nil {
return err
}
// check wire header: rawMsgLen
if uint32(len(pbRequest)) != header.GetRawRequestLen() {
return fmt.Errorf("protorpc.readRequestBody: Unexcpeted header.RawRequestLen.")
}
// Unmarshal to proto message
if request != nil {
err = proto.Unmarshal(pbRequest, request)
if err != nil {
return err
}
}
return nil
}
func (c *serverCodec) ReadRequestHeader(r *rpc.Request) error {
header := wire.RequestHeader{}
err := readRequestHeader(c.r, &header)
if err != nil {
return err
}
c.mutex.Lock()
c.seq++
c.pending[c.seq] = header.GetId()
r.ServiceMethod = header.GetMethod()
r.Seq = c.seq
c.mutex.Unlock()
c.reqHeader = header
return nil
}