Java 重试将失败的文件上载到AWS S3

我正试图使用Android应用程序将一个中等大小的文件（大约10MB）上传到我的AWS S3存储桶中

以下代码间歇性工作：

CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(...);
mTransfer = new TransferManager(credentialsProvider);
mTransfer.upload("bucket", key, file);

大约有一半的时间，这个效果很好。另一半时间，由于

SSLException

，上载失败。是否预计上传到S3会如此不可靠？我应该在客户端代码中处理重试吗

06-25 18:27:50.326: I/AmazonHttpClient(10765): Unable to execute HTTP request: Write error: ssl=0xa1ef1c00: I/O error during system call, Connection reset by peer
06-25 18:27:50.326: I/AmazonHttpClient(10765): javax.net.ssl.SSLException: Write error: ssl=0xa1ef1c00: I/O error during system call, Connection reset by peer
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.org.conscrypt.NativeCrypto.SSL_write(Native Method)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.org.conscrypt.OpenSSLSocketImpl$SSLOutputStream.write(OpenSSLSocketImpl.java:794)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.okio.Okio$1.write(Okio.java:73)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.java:116)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.okio.RealBufferedSink.write(RealBufferedSink.java:44)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.okhttp.internal.http.HttpConnection$FixedLengthSink.write(HttpConnection.java:310)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.java:116)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.android.okio.RealBufferedSink$1.write(RealBufferedSink.java:131)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.http.UrlHttpClient.write(UrlHttpClient.java:172)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.http.UrlHttpClient.writeContentToConnection(UrlHttpClient.java:129)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.http.UrlHttpClient.execute(UrlHttpClient.java:65)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:353)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:196)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4234)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1644)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.mobileconnectors.s3.transfermanager.internal.UploadCallable.uploadInOneChunk(UploadCallable.java:134)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.mobileconnectors.s3.transfermanager.internal.UploadCallable.call(UploadCallable.java:126)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.mobileconnectors.s3.transfermanager.internal.UploadMonitor.upload(UploadMonitor.java:182)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.mobileconnectors.s3.transfermanager.internal.UploadMonitor.call(UploadMonitor.java:140)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at com.amazonaws.mobileconnectors.s3.transfermanager.internal.UploadMonitor.call(UploadMonitor.java:54)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
06-25 18:27:50.326: I/AmazonHttpClient(10765):  at java.lang.Thread.run(Thread.java:818)

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不幸的是，这通常发生在网络非常零散的时候。您还可能遇到无法执行HTTP请求：无法解析主机“yourback.s3.amazonaws.com”：没有与主机名关联的地址。不幸的是，SDK所能做的并不多。它内置了自动重试功能，但是在连接不稳定的情况下，这种情况可能会发生很多次，最终SDK会放弃。您可以再次尝试该请求，但这是否有帮助取决于网络强度

韦斯顿