Retry the connection

[mikhn0]

Hello dear developers!🙂
I use your framework v2.1.1 in my project. And try to catch different states of connection.
As I see in method open func stream(_ aStream: Stream, handle eventCode: Stream.Event) we receive event that detects the kind of connection state and what we have to do. If I has internet connection at the start of the app, but then disable the internet and after that try to enable the internet - above method doesn't call. And sometimes it works correctly..

And also I always receive the same logs:
2017-11-28 20:28:16.871830+0300 Startscream_Test[654:767010] open on /var/mobile/Containers/Data/Application/FF1717DD-D983-4949-8939-53C7F6F02DD5/Documents/default.realm: File exists error copying seeds: Error Domain=NSCocoaErrorDomain Code=516 "“Startscream2.realm” couldn’t be copied to “Documents” because an item with the same name already exists." UserInfo={NSSourceFilePathErrorKey=/var/containers/Bundle/Application/43FA5EB4-6373-45B7-9797-F1FFC25012EE/Startscream_Test.app/Startscream2.realm, NSUserStringVariant=( Copy ), NSDestinationFilePath=/var/mobile/Containers/Data/Application/FF1717DD-D983-4949-8939-53C7F6F02DD5/Documents/default.realm, NSFilePath=/var/containers/Bundle/Application/43FA5EB4-6373-45B7-9797-F1FFC25012EE/Startscream_Test.app/Startscream2.realm, NSUnderlyingError=0x1c0458300 {Error Domain=NSPOSIXErrorDomain Code=17 "File exists"}} (CallManagerImpl.cpp:270): User config: {} [000:000] [771] (CallManagerImpl.cpp:47): Init: config_json: 2017-11-28 20:28:22.805413+0300 Startscream_Test[654:767010] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /private/var/containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles 2017-11-28 20:28:22.807564+0300 Startscream_Test[654:767010] [MC] Reading from public effective user settings. 2017-11-28 20:28:22.896321+0300 Startscream_Test[654:767010] [Crashlytics] Version 3.9.3 (128) 2017-11-28 20:29:21.797536+0300 Startscream_Test[654:767540] Task <40236176-4845-4239-A38C-CD531F285A21>.<1> finished with error - code: -1001 2017-11-28 20:29:21.834864+0300 Startscream_Test[654:767123] Task <40236176-4845-4239-A38C-CD531F285A21>.<1> HTTP load failed (error code: -999 [1:89]) 2017-11-28 20:29:21.865310+0300 Startscream_Test[654:767010] [MC] Lazy loading NSBundle MobileCoreServices.framework 2017-11-28 20:29:21.868182+0300 Startscream_Test[654:767010] [MC] Loaded MobileCoreServices.framework 2017-11-28 20:29:22.254318+0300 Startscream_Test[654:767193] TIC TCP Conn Failed [4:0x1c0173f80]: 3:-9800 Err(-9800) 2017-11-28 20:29:22.310887+0300 Startscream_Test[654:767010] Platon2 token: c01429910c938b5c63586c38d9b58bead1d37a3f3ca2b61340c51562e2a5fdaf 2017-11-28 20:29:22.318622+0300 Startscream_Test[654:767010] refreshPreferences: HangTracerEnabled: 0 2017-11-28 20:29:22.318672+0300 Startscream_Test[654:767010] refreshPreferences: HangTracerDuration: 500 2017-11-28 20:29:22.318690+0300 Startscream_Test[654:767010] refreshPreferences: ActivationLoggingEnabled: 0 ActivationLoggingTaskedOffByDA:0 2017-11-28 20:29:22.326931+0300 Startscream_Test[654:767142] TIC TCP Conn Failed [6:0x1c4171580]: 3:-9800 Err(-9800) 2017-11-28 20:29:22.401028+0300 Startscream_Test[654:767177] TIC TCP Conn Failed [8:0x1c4170e00]: 3:-9800 Err(-9800) 2017-11-28 20:29:22.401291+0300 Startscream_Test[654:767177] NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9800) 2017-11-28 20:29:22.401365+0300 Startscream_Test[654:767177] Task <B3B9D6E8-D5F0-41C4-AF4E-092A5BB7D25C>.<2> HTTP load failed (error code: -1200 [3:-9800]) 2017-11-28 20:29:22.401682+0300 Startscream_Test[654:767142] Task <B3B9D6E8-D5F0-41C4-AF4E-092A5BB7D25C>.<2> finished with error - code: -1200 2017-11-28 20:29:35.684238+0300 Startscream_Test[654:767122] XPC connection interrupted 2017-11-28 20:30:48.830461+0300 Startscream_Test[654:767142] SocketStream read error [0x1c0171ac0]: 1 60 2017-11-28 20:30:48.833974+0300 Startscream_Test[654:767177] Task <C17AD512-7361-4EEA-95F5-3E54EFA1346D>.<1> finished with error - code: -1001 2017-11-28 20:30:48.866206+0300 Startscream_Test[654:767193] Task <C17AD512-7361-4EEA-95F5-3E54EFA1346D>.<1> HTTP load failed (error code: -1005 [1:57]) 2017-11-28 20:30:51.535594+0300 Startscream_Test[654:767122] TIC TCP Conn Failed [12:0x1c4175b40]: 1:50 Err(50) 2017-11-28 20:30:51.536185+0300 Startscream_Test[654:767193] [] nw_connection_get_connected_socket 11 Connection has no connected handler 2017-11-28 20:30:51.536260+0300 Startscream_Test[654:767193] TCP Conn 0x1c016f180 Failed : error 0:50 [50] 2017-11-28 20:30:59.026183+0300 Startscream_Test[654:767122] Task <7E12AC60-4E4C-4C3A-9BC4-85E753A3F534>.<3> HTTP load failed (error code: -1009 [1:50]) 2017-11-28 20:30:59.027530+0300 Startscream_Test[654:767193] Task <7E12AC60-4E4C-4C3A-9BC4-85E753A3F534>.<3> finished with error - code: -1009 2017-11-28 20:30:59.078817+0300 Startscream_Test[654:767193] TIC TCP Conn Failed [13:0x1c4175d80]: 1:50 Err(50) 2017-11-28 20:30:59.094452+0300 Startscream_Test[654:767193] Task <63AAC584-761B-4B16-869B-49C69BF829B5>.<2> HTTP load failed (error code: -1009 [1:50]) 2017-11-28 20:30:59.095649+0300 Startscream_Test[654:767123] Task <63AAC584-761B-4B16-869B-49C69BF829B5>.<2> finished with error - code: -1009 2017-11-28 20:31:01.407031+0300 Startscream_Test[654:768181] TIC TCP Conn Failed [14:0x1c0177340]: 1:50 Err(50) 2017-11-28 20:31:01.425840+0300 Startscream_Test[654:768181] Task <D37627B8-B6F2-491B-96DE-9A736C19CC96>.<3> HTTP load failed (error code: -1009 [1:50]) 2017-11-28 20:31:01.426544+0300 Startscream_Test[654:768181] Task <D37627B8-B6F2-491B-96DE-9A736C19CC96>.<3> finished with error - code: -1009 2017-11-28 20:31:05.483091+0300 Startscream_Test[654:767123] TIC TCP Conn Failed [15:0x1c0177400]: 1:50 Err(50) 2017-11-28 20:31:05.492083+0300 Startscream_Test[654:767123] Task <8641E440-0B8A-4FB3-9D8E-02A9FCB245D6>.<4> HTTP load failed (error code: -1009 [1:50]) 2017-11-28 20:31:05.492788+0300 Startscream_Test[654:767123] Task <8641E440-0B8A-4FB3-9D8E-02A9FCB245D6>.<4> finished with error - code: -1009

Can you tell me about this method and why stream(_:handle:) doesn't call again?

[daltoniam]

I'm not exactly sure what you are asking, but the stream(_ aStream: Stream, handle eventCode: Stream.Event) is a foundation delegate callback. It only gets called when the system detects a network update. That call isn't guaranteed to be called on loss of an internet connection (until a timeout). You can read more about this here #401.