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使用 iOS SDK 将图像发布到 S3 存储桶时出现间歇性崩溃错误。

这些崩溃错误由 2 个错误组成，但源自 SDK 的同一区域。

  1. 赛格思

    0 ofs staff 0x00282616 testflight_backtrace + 382
1 ofs staff 0x00283264 TFSignalHandler + 264
2 libsystem_c.dylib 0x3b656e92 _sigtramp + 42
3 ofs staff 0x001c74a6 -S3Request configureURLRequest (S3Request.m:41)
4 ofs staff 0x001b3c1a -S3AbstractPutRequest configureURLRequest (S3AbstractPutRequest.m:27)
5 ofs staff 0x001c61ee -S3PutObjectRequest configureURLRequest (S3PutObjectRequest.m:62)
6 ofs staff 0x001b2bfe -AmazonS3Client signS3Request: (AmazonS3Client.m:579)
7 ofs staff 0x001b22aa -AmazonS3Client invoke: (AmazonS3Client.m:450)
8 ofs staff 0x001b1298 -AmazonS3Client putObject: (AmazonS3Client.m:134)
9 ofs staff 0x000d511e -OFSAmazonS3Client putObject: (OFSAmazonS3Client.m:41)
10 ofs staff 0x00099b02 -OFSAWSFileUploader upload:forTask:toAWSBucket:accessKey:secret:error: (OFSAWSFileUploader.m:120)
11 ofs staff 0x000d442c -OFSPhotoActivityUploadCell startUpload (OFSPhotoActivityUploadCell.m:104)
12 UIKit 0x354260c4 -UIApplication sendAction:to:from:forEvent: + 72
13 UIKit 0x35426076 -UIApplication sendAction:toTarget:fromSender:forEvent: + 30
14 UIKit 0x35426054 -UIControl sendAction:to:forEvent: + 44
15 UIKit 0x3542590a -UIControl(Internal) _sendActionsForEvents:withEvent: + 502
16 UIKit 0x35425e00 -UIControl touchesEnded:withEvent: + 488
17 UIKit 0x35344420 _UIGestureRecognizerUpdate + 5768
18 CoreFoundation 0x335086cc __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 20
19 CoreFoundation 0x335069c0 __CFRunLoopDoObservers + 276
20 CoreFoundation 0x33506d16 __CFRunLoopRun + 742
21 CoreFoundation 0x33479ebc CFRunLoopRunSpecific + 356
22 CoreFoundation 0x33479d48 CFRunLoopRunInMode + 104
23 GraphicsServices 0x3703d2ea GSEventRunModal + 74
24 UIKit 0x3538f300 UIApplicationMain + 1120
25 ofs staff 0x00082e36 main (main.m:16)
26 libdyld.dylib 0x3b60fb1f start + 3

  2. -__NSCFNumber requestFormat：无法识别的选择器发送到实例 0x1d43cfc0

    0 CoreFoundation 0x335332a3 __exceptionPreprocess + 163
1 libobjc.A.dylib 0x3b1d897f objc_exception_throw + 31
2 CoreFoundation 0x33536e07 -NSObject(NSObject) doesNotRecognizeSelector: + 171
3 CoreFoundation 0x33535531 ___forwarding___ + 393
4 CoreFoundation 0x3348cf68 _CF_forwarding_prep_0 + 24
5 ofs staff 0x001f84a7 -S3Request configureURLRequest (S3Request.m:41)
6 ofs staff 0x001e4c1b -S3AbstractPutRequest configureURLRequest (S3AbstractPutRequest.m:29)
7 ofs staff 0x001f71ef -S3PutObjectRequest configureURLRequest (S3PutObjectRequest.m:64)
8 ofs staff 0x001e3bff -AmazonS3Client signS3Request: (AmazonS3Client.m:579)
9 ofs staff 0x001e32ab -AmazonS3Client invoke: (AmazonS3Client.m:450)
10 ofs staff 0x001e2299 -AmazonS3Client putObject: (AmazonS3Client.m:134)
11 ofs staff 0x0010611f -OFSAmazonS3Client putObject: (OFSAmazonS3Client.m:41)
12 ofs staff 0x000cab03 -OFSAWSFileUploader upload:forTask:toAWSBucket:accessKey:secret:error: (OFSAWSFileUploader.m:120)
13 ofs staff 0x0010542d -OFSPhotoActivityUploadCell startUpload (OFSPhotoActivityUploadCell.m:104)
14 UIKit 0x354260c5 -UIApplication sendAction:to:from:forEvent: + 73
15 UIKit 0x35426077 -UIApplication sendAction:toTarget:fromSender:forEvent: + 31
16 UIKit 0x35426055 -UIControl sendAction:to:forEvent: + 45
17 UIKit 0x3542590b -UIControl(Internal) _sendActionsForEvents:withEvent: + 503
18 UIKit 0x35425e01 -UIControl touchesEnded:withEvent: + 489
19 UIKit 0x35344421 _UIGestureRecognizerUpdate + 5769
20 CoreFoundation 0x335086cd __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 21
21 CoreFoundation 0x335069c1 __CFRunLoopDoObservers + 277
22 CoreFoundation 0x33506d17 __CFRunLoopRun + 743
23 CoreFoundation 0x33479ebd CFRunLoopRunSpecific + 357
24 CoreFoundation 0x33479d49 CFRunLoopRunInMode + 105
25 GraphicsServices 0x3703d2eb GSEventRunModal + 75
26 UIKit 0x3538f301 UIApplicationMain + 1121
27 ofs staff 0x000b3e37 main (main.m:16)
28 libdyld.dylib 0x3b60fb20 start + 0

这两个错误都集中在 S3Request.m 的第 41 行，内容如下

[self.urlRequest setValue:self.host forHTTPHeaderField:kHttpHdrHost];

这些错误是间歇性的，到目前为止我无法准确地复制问题，所以不知道当应用程序崩溃时 self.host 的值是多少。

上传成功后，host的值为正确的bucket名称。

为了尝试复制此操作，我尝试在主机名设置为 nil、设置为不正确的存储桶名称、wifi、3G 且没有连接的情况下运行请求，但这些条件都不会导致任何一种情况发生。

有谁知道是什么导致了这些问题，因此我可能需要做些什么来解决这些问题？

===更新===

我终于设法复制它，我不知道如何。我刚拿到SIGSEV。

这是发生错误时 S3Request 对象上请求对象的状态

(S3PutObjectRequest) S3PutObjectRequest = {
  S3AbstractPutRequest = {
    S3Request = {
      AmazonServiceRequest = {
        NSObject = {
          isa = OFSS3PutObjectRequest
        }
        httpMethod = 0x004bde08 @"GET"
        parameters = 0x00000000
        endpoint = 0x004c3a38 @"https://s3.amazonaws.com"
        userAgent = 0x1d427b60 @"aws-sdk-iOS/1.4.4 iPhone-OS/6.0.1 en_GB"
        credentials = 0x00000000
        urlRequest = 0x1d1165f0
        urlConnection = 0x1d04d680
        responseTimer = 0x00000000
        requestTag = 0x00000000
        serviceName = 0x00000000
        regionName = 0x00000000
        hostName = 0x00000000
        delegate = 0x1c567ba0
      }
      authorization = 0x00000000
      contentLength = 0
      contentType = 0x004b9e28 @"image/jpeg"
      date = 0x1d0e8340 <not an Objective-C object>
      securityToken = 0x00000000
      bucket = 0x1d4464f0 @"*****"
      key = 0x1d1eb040 @"id_C78ACBEA_58163_0.jpg"
      subResource = 0x00000000
    }
    cannedACL = 0x00000000
    fullACL = 0x00000000
    storageClass = 0x00000000
    serverSideEncryption = 0x00000000
    metadata = 0x1d2d6700 0 key/value pairs
  }
  expiresSet = NO
  cacheControl = 0x00000000
  contentDisposition = 0x00000000
  contentEncoding = 0x00000000
  contentMD5 = 0x00000000
  filename = 0x00000000
  data = 0x1d1a9f00 3814479 bytes
  stream = 0x00000000
  expect = 0x00000000
  generateMD5 = NO
  expires = 0
  redirectLocation = 0x00000000
}
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