SDWebImage: AVMetadataItemValueRequest & SDWebImageManager.load hang

New Issue Checklist

• [ X] I have read and understood the CONTRIBUTING guide
• [ X] I have read the Documentation
• [ X] I have searched for a similar issue in the project and found none

Issue Info

Info	Value
Platform Name	ios
Platform Version	14.0 - 16.2
SDWebImage Version	5.12.1
Integration Method	cocoapods
Xcode Version	14.2
Repro rate	all the time (100%)
Repro with our demo prj	don’t know yet
Demo project link	none

Issue Description and Steps

• iOS application with AVKit, SDWebImage (cocoapods)
• Lazy load artwork like that:

extension AVMetadataItem {
    static func artwork(url: URL, placeholder: UIImage?) -> AVMetadataItem {
        let art = AVMutableMetadataItem()
        art.identifier = .commonIdentifierArtwork
        art.dataType = kCMMetadataBaseDataType_PNG as String
        art.extendedLanguageTag = "und"

        return AVMetadataItem(propertiesOf: art) { request in 
              SDWebImageManager.shared
                .loadImage(with: url, context: [:], progress: nil) { image, _, error, _, _, _ in
                     // no call here at all, hang application before this callback
                    let cover: UIImage?

                    if let image = image {
                        cover = image

                    } else {
                        cover = placeholder
                    }

                    guard let data = cover?.pngData() else {
                        request.respond(error: CustomError.loadImageFailed)
                        return
                    }

                    request.respond(value: data as NSData)
                }
        }
}

I found some place in code there is hang started in file SDImageCache.m:

if (doneBlock) {
                if (shouldQueryDiskSync) {
                    doneBlock(diskImage, diskData, SDImageCacheTypeDisk);
                } else {
                    dispatch_async(dispatch_get_main_queue(), ^{ // <<< HERE
                        doneBlock(diskImage, diskData, SDImageCacheTypeDisk);
                    });
                }
            }

This hang happen only when call load image in AVMetadataItem function for lazy load, nothing hangs when load by URLSession.shared Can’t yet understand any reason for that 😦