Simulator install - curl: (18) transfer closed

[wrutkowski]

Hi,

I'm experiencing the same error for a long time now and it can happen a few times in a row as in the below log.

This is the command I'm running: xcversion simulators --install="tvOS 10.1"

And this is the log:

$ xcversion simulators --install="tvOS 10.1"
Installing tvOS 10.1 Simulator for Xcode 8.3.0...
####                                                                       5.9%
curl: (18) transfer closed with 1081635138 bytes remaining to read
Mounting DMG
hdiutil: mount failed - no mountable file systems
[!] Failed to invoke hdiutil.
$ xcversion cleanup; xcversion simulators --install="tvOS 10.1"
Installing tvOS 10.1 Simulator for Xcode 8.3.0...
###                                                                        4.5%
curl: (18) transfer closed with 1097622531 bytes remaining to read
Mounting DMG
hdiutil: mount failed - image not recognized
[!] Failed to invoke hdiutil.
$ xcversion cleanup; xcversion simulators --install="tvOS 10.1"
Installing tvOS 10.1 Simulator for Xcode 8.3.0...
##                                                                         3.0%
curl: (18) transfer closed with 1115300867 bytes remaining to read
Mounting DMG
hdiutil: mount failed - image not recognized
[!] Failed to invoke hdiutil.
$ xcversion cleanup; xcversion simulators --install="tvOS 10.1"
Installing tvOS 10.1 Simulator for Xcode 8.3.0...
####                                                                       5.8%
curl: (18) transfer closed with 1082962242 bytes remaining to read
Mounting DMG
hdiutil: mount failed - no mountable file systems
[!] Failed to invoke hdiutil.

Thanks

[timsutton]

I'm not experiencing the "transfer closed" issue, but I do notice that if I Ctrl-C the process and run it again, it assumes an existing download is complete and attempts to mount the dmg.

[wrutkowski]

When I restart it's not continuing to download, just try to mount corrupted file and exit with error. I had to retry and it finally worked, but it's not stable for some reason.

[wrutkowski]

I think the issue is with my network connection. Do you think it's possible to make the downloading script more resistant for connection drops and / or automatic retry?

[timsutton]

XcodeInstall uses some curl flags to automatically finish any incomplete downloads for the Xcode dmgs/xips, so potentially this could be done for the simulator downloads as well.

[marcomorain]

We are getting the same issue at CircleCI:

Installing iOS 10.0
Installing iOS 10.0 Simulator for Xcode 8.3.3...
<curl progressbar>
curl: (18) transfer closed with 140524867 bytes remaining to read
Mounting DMG
hdiutil: mount failed - image not recognized
[!] Failed to invoke hdiutil.

[pronebird]

Same issue here. xcversion keeps mounting corrupt DMG. No recovery from network error whatsoever.

[timsutton]

This is probably a fairly easy fix, to test copying in the same option curl uses for resuming a partial download, if anyone wants to try.

[timsutton]

(and now that I look, I completely missed that @marcomorain has already done work towards that :)

[timsutton]

219 will help for network issues, but if there's an unfinished dmg downloaded we'll still blindly try and mount it. Doing this would at least help ensure we do a full check for a complete download every time:

diff --git a/lib/xcode/install.rb b/lib/xcode/install.rb
index 2a97256..65aec46 100644
--- a/lib/xcode/install.rb
+++ b/lib/xcode/install.rb
@@ -385,7 +385,7 @@ HELP
     end

     def install
-      download unless dmg_path.exist?
+      download
       prepare_package unless pkg_path.exist?
       puts "Please authenticate to install #{name}..."
       `sudo installer -pkg #{pkg_path} -target /`

[wrutkowski]

Thanks @marcomorain 👍