Esempio n. 1
0
func newHPACKDecoder() *hpackDecoder {
	d := &hpackDecoder{}
	d.h = hpack.NewDecoder(http2InitHeaderTableSize, func(f hpack.HeaderField) {
		switch f.Name {
		case "content-type":
			if !strings.Contains(f.Value, "application/grpc") {
				d.err = StreamErrorf(codes.FailedPrecondition, "transport: received the unexpected header")
				return
			}
		case "grpc-encoding":
			d.state.encoding = f.Value
		case "grpc-status":
			code, err := strconv.Atoi(f.Value)
			if err != nil {
				d.err = StreamErrorf(codes.Internal, "transport: malformed grpc-status: %v", err)
				return
			}
			d.state.statusCode = codes.Code(code)
		case "grpc-message":
			d.state.statusDesc = f.Value
		case "grpc-timeout":
			d.state.timeoutSet = true
			var err error
			d.state.timeout, err = timeoutDecode(f.Value)
			if err != nil {
				d.err = StreamErrorf(codes.Internal, "transport: malformed time-out: %v", err)
				return
			}
		case ":path":
			d.state.method = f.Value
		default:
			if !isReservedHeader(f.Name) {
				if f.Name == "user-agent" {
					i := strings.LastIndex(f.Value, " ")
					if i == -1 {
						// There is no application user agent string being set.
						return
					}
					// Extract the application user agent string.
					f.Value = f.Value[:i]
				}
				if d.state.mdata == nil {
					d.state.mdata = make(map[string][]string)
				}
				k, v, err := metadata.DecodeKeyValue(f.Name, f.Value)
				if err != nil {
					grpclog.Printf("Failed to decode (%q, %q): %v", f.Name, f.Value, err)
					return
				}
				d.state.mdata[k] = append(d.state.mdata[k], v)
			}
		}
	})
	return d
}
Esempio n. 2
0
func newHPACKDecoder() *hpackDecoder {
	d := &hpackDecoder{}
	d.h = hpack.NewDecoder(http2InitHeaderTableSize, func(f hpack.HeaderField) {
		switch f.Name {
		case "grpc-status":
			code, err := strconv.Atoi(f.Value)
			if err != nil {
				d.err = StreamErrorf(codes.Internal, "transport: malformed grpc-status: %v", err)
				return
			}
			d.state.statusCode = codes.Code(code)
		case "grpc-message":
			d.state.statusDesc = f.Value
		case "grpc-timeout":
			d.state.timeoutSet = true
			var err error
			d.state.timeout, err = timeoutDecode(f.Value)
			if err != nil {
				d.err = StreamErrorf(codes.Internal, "transport: malformed time-out: %v", err)
				return
			}
		case ":path":
			d.state.method = f.Value
		default:
			if !isReservedHeader(f.Name) {
				if d.state.mdata == nil {
					d.state.mdata = make(map[string]string)
				}
				k, v, err := metadata.DecodeKeyValue(f.Name, f.Value)
				if err != nil {
					grpclog.Printf("Failed to decode (%q, %q): %v", f.Name, f.Value, err)
					return
				}
				d.state.mdata[k] = v
			}
		}
	})
	return d
}