func (cdc *HrpcClientCodec) ReadResponseHeader(resp *rpc.Response) error {
hdr := common.HrpcResponseHeader{}
err := binary.Read(cdc.rwc, binary.LittleEndian, &hdr)
if err != nil {
return errors.New(fmt.Sprintf("Error reading response header "+
"bytes: %s", err.Error()))
}
resp.ServiceMethod = common.HrpcMethodIdToMethodName(hdr.MethodId)
if resp.ServiceMethod == "" {
return errors.New(fmt.Sprintf("Error reading response header: "+
"invalid method ID %d.", hdr.MethodId))
}
resp.Seq = hdr.Seq
if hdr.ErrLength > 0 {
if hdr.ErrLength > common.MAX_HRPC_ERROR_LENGTH {
return errors.New(fmt.Sprintf("Error reading response header: "+
"error message was %d bytes long, but "+
"MAX_HRPC_ERROR_LENGTH is %d.",
hdr.ErrLength, common.MAX_HRPC_ERROR_LENGTH))
}
buf := make([]byte, hdr.ErrLength)
var nread int
nread, err = cdc.rwc.Read(buf)
if uint32(nread) != hdr.ErrLength {
return errors.New(fmt.Sprintf("Error reading response header: "+
"failed to read %d bytes of error message.", nread))
}
if err != nil {
return errors.New(fmt.Sprintf("Error reading response header: "+
"failed to read %d bytes of error message: %s",
nread, err.Error()))
}
resp.Error = string(buf)
} else {
resp.Error = ""
}
cdc.length = hdr.Length
return nil
}
func (cdc *HrpcServerCodec) ReadRequestHeader(req *rpc.Request) error {
hdr := common.HrpcRequestHeader{}
if cdc.lg.TraceEnabled() {
cdc.lg.Tracef("%s: Reading HRPC request header.\n", cdc.conn.RemoteAddr())
}
cdc.conn.SetDeadline(time.Now().Add(cdc.hsv.ioTimeo))
err := binary.Read(cdc.conn, binary.LittleEndian, &hdr)
if err != nil {
if err == io.EOF && cdc.numHandled > 0 {
return newIoError(cdc, fmt.Sprintf("Remote closed connection "+
"after writing %d message(s)", cdc.numHandled), common.DEBUG)
}
return newIoError(cdc,
fmt.Sprintf("Error reading request header: %s", err.Error()), common.WARN)
}
if cdc.lg.TraceEnabled() {
cdc.lg.Tracef("%s: Read HRPC request header %s\n",
cdc.conn.RemoteAddr(), asJson(&hdr))
}
if hdr.Magic != common.HRPC_MAGIC {
return newIoErrorWarn(cdc, fmt.Sprintf("Invalid request header: expected "+
"magic number of 0x%04x, but got 0x%04x", common.HRPC_MAGIC, hdr.Magic))
}
if hdr.Length > common.MAX_HRPC_BODY_LENGTH {
return newIoErrorWarn(cdc, fmt.Sprintf("Length prefix was too long. "+
"Maximum length is %d, but we got %d.", common.MAX_HRPC_BODY_LENGTH,
hdr.Length))
}
req.ServiceMethod = common.HrpcMethodIdToMethodName(hdr.MethodId)
if req.ServiceMethod == "" {
return newIoErrorWarn(cdc, fmt.Sprintf("Unknown MethodID code 0x%04x",
hdr.MethodId))
}
req.Seq = hdr.Seq
cdc.length = hdr.Length
return nil
}
func (cdc *HrpcServerCodec) ReadRequestHeader(req *rpc.Request) error {
hdr := common.HrpcRequestHeader{}
if cdc.lg.TraceEnabled() {
cdc.lg.Tracef("Reading HRPC request header from %s\n", cdc.conn.RemoteAddr())
}
err := binary.Read(cdc.conn, binary.LittleEndian, &hdr)
if err != nil {
level := common.WARN
if err == io.EOF {
level = common.DEBUG
}
return createErrAndLog(cdc.lg, fmt.Sprintf("Error reading header bytes: %s",
err.Error()), level)
}
if cdc.lg.TraceEnabled() {
cdc.lg.Tracef("Read HRPC request header %s from %s\n",
asJson(&hdr), cdc.conn.RemoteAddr())
}
if hdr.Magic != common.HRPC_MAGIC {
return createErrAndWarn(cdc.lg, fmt.Sprintf("Invalid request header: expected "+
"magic number of 0x%04x, but got 0x%04x", common.HRPC_MAGIC, hdr.Magic))
}
if hdr.Length > common.MAX_HRPC_BODY_LENGTH {
return createErrAndWarn(cdc.lg, fmt.Sprintf("Length prefix was too long. "+
"Maximum length is %d, but we got %d.", common.MAX_HRPC_BODY_LENGTH,
hdr.Length))
}
req.ServiceMethod = common.HrpcMethodIdToMethodName(hdr.MethodId)
if req.ServiceMethod == "" {
return createErrAndWarn(cdc.lg, fmt.Sprintf("Unknown MethodID code 0x%04x",
hdr.MethodId))
}
req.Seq = hdr.Seq
cdc.length = hdr.Length
return nil
}