NonStream executes a non-streaming HTTP request using the websocket provider.
(ctx context.Context, provider string, req *HTTPRequest)
| 37 | |
| 38 | // NonStream executes a non-streaming HTTP request using the websocket provider. |
| 39 | func (m *Manager) NonStream(ctx context.Context, provider string, req *HTTPRequest) (*HTTPResponse, error) { |
| 40 | if req == nil { |
| 41 | return nil, fmt.Errorf("wsrelay: request is nil") |
| 42 | } |
| 43 | msg := Message{ID: uuid.NewString(), Type: MessageTypeHTTPReq, Payload: encodeRequest(req)} |
| 44 | respCh, err := m.Send(ctx, provider, msg) |
| 45 | if err != nil { |
| 46 | return nil, err |
| 47 | } |
| 48 | var ( |
| 49 | streamMode bool |
| 50 | streamResp *HTTPResponse |
| 51 | streamBody bytes.Buffer |
| 52 | ) |
| 53 | for { |
| 54 | select { |
| 55 | case <-ctx.Done(): |
| 56 | return nil, ctx.Err() |
| 57 | case msg, ok := <-respCh: |
| 58 | if !ok { |
| 59 | if streamMode { |
| 60 | if streamResp == nil { |
| 61 | streamResp = &HTTPResponse{Status: http.StatusOK, Headers: make(http.Header)} |
| 62 | } else if streamResp.Headers == nil { |
| 63 | streamResp.Headers = make(http.Header) |
| 64 | } |
| 65 | streamResp.Body = append(streamResp.Body[:0], streamBody.Bytes()...) |
| 66 | return streamResp, nil |
| 67 | } |
| 68 | return nil, errors.New("wsrelay: connection closed during response") |
| 69 | } |
| 70 | switch msg.Type { |
| 71 | case MessageTypeHTTPResp: |
| 72 | resp := decodeResponse(msg.Payload) |
| 73 | if streamMode && streamBody.Len() > 0 && len(resp.Body) == 0 { |
| 74 | resp.Body = append(resp.Body[:0], streamBody.Bytes()...) |
| 75 | } |
| 76 | return resp, nil |
| 77 | case MessageTypeError: |
| 78 | return nil, decodeError(msg.Payload) |
| 79 | case MessageTypeStreamStart, MessageTypeStreamChunk: |
| 80 | if msg.Type == MessageTypeStreamStart { |
| 81 | streamMode = true |
| 82 | streamResp = decodeResponse(msg.Payload) |
| 83 | if streamResp.Headers == nil { |
| 84 | streamResp.Headers = make(http.Header) |
| 85 | } |
| 86 | streamBody.Reset() |
| 87 | continue |
| 88 | } |
| 89 | if !streamMode { |
| 90 | streamMode = true |
| 91 | streamResp = &HTTPResponse{Status: http.StatusOK, Headers: make(http.Header)} |
| 92 | } |
| 93 | chunk := decodeChunk(msg.Payload) |
| 94 | if len(chunk) > 0 { |
| 95 | streamBody.Write(chunk) |
| 96 | } |
no test coverage detected