java - 使用 Retrofit2 上传二进制文件大多数时候会因 ECONNRESET(连接被对等方重置)而失败

Question

我使用retrofit2上传二进制图像文件:

File file = new File(filePath);
    RequestBody requestBody = new ProgressRequestBody(
            MediaType.parse("application/octet-stream"),
            file,
            this);

    Call<ResponseBody> call = service.uploadFile(requestBody);

    call.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call,
                               Response<ResponseBody> response) {

            if (!response.isSuccessful()) {
                Toasti.showS("fail");
                return;
            }

            Log.v("Upload", "success");
            UploadFileOutput uploadFileOutput = new UploadFileOutput();
            try {
                uploadFileOutput =
                        new Gson().fromJson(response.body().string(), UploadFileOutput.class);
            } catch (IOException e) {
                e.printStackTrace();
            }


  ImageLoader.getInstance().displayImage(uploadFileOutput.imageSrc, giftImageview);
            }

        }

        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
            Log.e("Upload error:", t.getMessage());
            Toasti.showS("fail");
        }
    });

但大多数时候(有时它工作正常!)它会因为这个错误而失败:

sendto failed: ECONNRESET (Connection reset by peer)

我阅读了很多帖子和教程:

java.net.SocketException: sendto failed: ECONNRESET (Connection reset by peer)

Getting “SocketException : Connection reset by peer” in Android

retrofit.RetrofitError: sendto failed: ECONNRESET (Connection reset by peer)

但他们都没有帮助我。

我用postman测试api方法，它总是有效，没有任何错误!

Answer 1

经过几天的测试和搜索，我发现我应该通过 readTimeout 和 readTimeout 增加 okhttp 客户端的超时:

longTimeOutHttpClient = new OkHttpClient.Builder()
            .readTimeout(120, TimeUnit.SECONDS)
            .connectTimeout(120, TimeUnit.SECONDS)
            .build();
    longTimeoutRetrofitBuilder = new Retrofit.Builder()
            .addConverterFactory(GsonConverterFactory.create())
            .client(httpClient);
    longTimeOutRetrofit = longTimeoutRetrofitBuilder.baseUrl(URIs.BASE_URL + 
    URIs.API_VERSION).build();

    longTimeoutService = longTimeOutRetrofit.create(RestAPI.class);

出现此错误的原因是文件较大且网速较低，导致连接超时。