Xcode simulator constantly download something
Xcode 11.2.1 simulator 13.2.2 constantly download something daily about 450 MB through nsurlsessiond. Is this usual?
some logs
% sudo lsof | grep nsurlsessiond
Password:
UserEvent 60 root txt REG 1,4 30016 1152921500312497946 /System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/Contents/MacOS/com.apple.nsurlsessiond
nsurlsess 215 _nsurlsessiond cwd DIR 1,4 736 2 /
nsurlsess 215 _nsurlsessiond txt REG 1,4 614448 1152921500312495196 /usr/libexec/nsurlsessiond
nsurlsess 215 _nsurlsessiond txt REG 1,4 28180 23592776 /Library/Preferences/Logging/.plist-cache.99GYDmPS
nsurlsess 215 _nsurlsessiond txt REG 1,4 29062064 1152921500312497147 /usr/share/icu/icudt64l.dat
nsurlsess 215 _nsurlsessiond txt REG 1,4 10833920 23596379 /private/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/0/com.apple.LaunchServices.dv/com.apple.LaunchServices-1080-v2.csstore
nsurlsess 215 _nsurlsessiond txt REG 1,4 1558064 1152921500312496184 /usr/lib/dyld
nsurlsess 215 _nsurlsessiond 0r CHR 3,2 0t0 310 /dev/null
nsurlsess 215 _nsurlsessiond 1u CHR 3,2 0t0 310 /dev/null
nsurlsess 215 _nsurlsessiond 2u CHR 3,2 0t0 310 /dev/null
nsurlsess 215 _nsurlsessiond 3 NPOLICY
nsurlsess 215 _nsurlsessiond 5u systm 0x1ebb302b93b87b91 0t0 [ctl com.apple.netsrc id 7 unit 7]
UserEvent 311 xxxx txt REG 1,4 30016 1152921500312497946 /System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/Contents/MacOS/com.apple.nsurlsessiond
nsurlsess 345 xxxx txt REG 1,4 614448 1152921500312495196 /usr/libexec/nsurlsessiond
UserEvent 8964 xxxx txt REG 1,4 29984 23127670 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/com.apple.nsurlsessiond
nsurlsess 9001 xxxx txt REG 1,4 761744 23119545 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/libexec/nsurlsessiond
com.apple 9044 xxxx 3w REG 1,4 13597149 23603623 /Users/xxxx/Library/Developer/CoreSimulator/Devices/F0685A70-DEB9-4786-8368-CF98BAC7FD1A/data/Library/Caches/com.apple.nsurlsessiond/Downloads/com.apple.mobileassetd/CFNetworkDownload_O3Y86b.tmp/AssetData/adat
xxxx@xxxx-iMac ~ %
this is launch_sim log
cwd
/
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/libexec/nsurlsessiond
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/dyld_sim
txt
/Users/xxxxxx/Library/Developer/CoreSimulator/Devices/34D7CA2A-2595-4E6F-9622-2252E0BB5A08/data/Library/Preferences/Logging/.plist-cache.ouQB3E7W
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libobjc-trampolines.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/share/icu/icudt64l.dat
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/IDSSimulatorSupport.framework/IDSSimulatorSupport
txt
/Users/xxxxxx/Library/Developer/CoreSimulator/Devices/34D7CA2A-2595-4E6F-9622-2252E0BB5A08/data/var/db/lsd/com.apple.LaunchServices-1080-v2.csstore
txt
/usr/lib/dyld
txt
/Users/xxxxxx/Library/Developer/CoreSimulator/Caches/dyld/19B88/com.apple.CoreSimulator.SimRuntime.iOS-13-2.17B102/dyld_sim_shared_cache_x86_64
0
/dev/null
1
/dev/null
2
/dev/null
3
->0xe277ad83c16882a9
4
/Users/xxxxxx/Library/Developer/CoreSimulator/Devices/34D7CA2A-2595-4E6F-9622-2252E0BB5A08/data/var/run/memory_warning_simulation
6
[ctl com.apple.netsrc id 8 unit 41]
this is sim log:
cwd
/
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/sbin/launchd_sim
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/dyld_sim
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libSystem.B.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libobjc.A.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcache.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcommonCrypto.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcompiler_rt.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcopyfile.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcorecrypto.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdispatch.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdyld.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/liblaunch.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libmacho.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libremovefile.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_asl.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_blocks.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_c.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_configuration.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_containermanager.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_coreservices.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_darwin.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_dnssd.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_featureflags.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_info.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_m.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_malloc.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_notify.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_sandbox.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_sim_kernel.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_sim_platform.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_sim_pthread.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_trace.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libunwind.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libxpc.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_sim_pthread_host.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_sim_platform_host.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_sim_kernel_host.dylib
txt
/usr/lib/system/libsystem_kernel.dylib
txt
/usr/lib/system/libsystem_platform.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++abi.dylib
txt
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++.1.dylib
txt
/usr/lib/system/libsystem_pthread.dylib
txt
/usr/lib/dyld
0
/dev/null
1
/dev/null
2
/private/tmp/com.apple.CoreSimulator.SimDevice.34D7CA2A-2595-4E6F-9622-2252E0BB5A08/launchd.log
3
[ctl com.apple.netsrc id 8 unit 38]
4
->0xe277ad83b83d2d29
5
/tmp/com.apple.CoreSimulator.SimDevice.34D7CA2A-2595-4E6F-9622-2252E0BB5A08/syslogsock
6
/private/tmp/com.apple.CoreSimulator.SimDevice.34D7CA2A-2595-4E6F-9622-2252E0BB5A08/launches.2019-12-10.20.17.19.log
7
/private/tmp/com.apple.launchd.ylqXwtBNy6/com.apple.webinspectord_sim.socket
8
/private/tmp/com.apple.launchd.ylqXwtBNy6/com.apple.webinspectord_sim.socket
9
/private/tmp/com.apple.launchd.5cVa6VutSZ/Listeners
10
/private/tmp/com.apple.launchd.26mpQitX06/com.apple.testmanagerd.unix-domain.socket
11
/private/tmp/com.apple.launchd.5cVa6VutSZ/Listeners
12
/private/tmp/com.apple.launchd.GjbwCBAvpU/com.apple.testmanagerd.remote-automation.unix-domain.socket
13
/private/tmp/com.apple.launchd.26mpQitX06/com.apple.testmanagerd.unix-domain.socket
14
/dev/null
15
/private/tmp/com.apple.launchd.GjbwCBAvpU/com.apple.testmanagerd.remote-automation.unix-domain.socket
16
17
/dev/null
Finally i find a temporary solution!
rename the file com.apple.nsurlsessiond(Dont delete) in
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/
to something -com.apple.nsurlsessiond
and also the file nsurlsessiond(Dont delete) in
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/libexec/
to something -nsurlsessiond
Apps with admob works perfectly also no problem with safari
While there's an answer in the question itself, (renaming Xcode's internal
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/UserEventPlugins/com.apple.nsurlsessiond.plugin/
binary/ plugin), another way to solve this is firewall.
In system preferences > privacy > firewall, Add Xcode to the list and block all connections.
If that doesn't stop it, download a firewall (like Little Snitch, LuLu) and block more processes.
- Does Catalina 10.15 contact Apple servers when executing programs?
The Simulators pane of Components preferences shows an entry for each optional simulator runtime. When an optional simulator is available but not installed on your system, Xcode displays a Download button beside that simulator runtime. Xcode can also be configured to automatically keep your installed simulator runtimes up to date.
Download and install a simulator runtime: Click the Download button () next to a simulator runtime.
Check for simulator runtime updates: Click “Check and Install Now.”
Install simulator updates automatically: Select the “Check for and install simulator updates automatically” checkbox.
https://help.apple.com/xcode/mac/10.2/index.html?localePath=en.lproj#/deva7379ae35
