iOS Upload Progress Events Do Not Fire #70

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1. evanlegamer commented on Jun 2, 2026

   

   evanlegamer

   on Jun 2, 2026

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   Got the same problem
2. evanlegamer commented on Jun 2, 2026

   

   evanlegamer

   on Jun 2, 2026

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   Traced this to the underlying IONFileTransferLib. The gate is at IONFLTRUploadDelegate.swift:43-50:

   let response = task.response as? HTTPURLResponse
   let statusCode = response?.statusCode ?? 0
   if (200...299).contains(statusCode) {
       publisher.sendProgress(...)
   }

   During an upload, task.response is nil until the server replies — i.e. for every didSendBodyData callback fired while bytes are still being streamed — so statusCode is always 0 and progress is suppressed. The single event observers see ("only fires once the file is uploaded") isn't actually a didSendBodyData event; it's the forced progress tick the plugin emits from the .complete branch in FileTransferPlugin.swift:214-223 right before resolving the upload promise.

   Android works because the equivalent code doesn't have the gate. Downloads happen to work because for GETs the response arrives before the body, so task.response is populated by the time didWriteData fires.

   Opened a PR in the underlying lib that drops the gate: ionic-team/ion-ios-filetransfer#21. Once that's released and bumped here, this issue should be resolved.