WWW connection refused crashes game build

Unity Engine
,
1

Hi,

This is my very very first attempt on Unity with Android - so I’m uncertain if I do something stupidly wrong or if this is a real bugger.

The issue I run into is, that I attempt to call a server via WWW class that is (knowingly) now responding on a port. I get a Connection refused (as expected) - but instead of continuing running the game, the build simply crashes.

If I change the port, so that its actually connecting to a live host (but still a resource that doesnt exist) I get a FileNotFound - and a crash.

I’m running a development build, so it should have forced internet access.

Here is the code snippet:

	private IEnumerator CheckVersionCoroutine() {
		string url = "http://XXXX:8081/";
		
		string wwwArgs = "?";
		wwwArgs += "cmd=" + "verCheck";
		wwwArgs += "&ver=" + GameVersion.Version;
				
		WWW wwwReq = new WWW(url + wwwArgs);
		
		yield return wwwReq;
		if (wwwReq.error != null) {
			Logging.Log(LogLevel.INFO, "Error checking version: "+wwwReq.error);
			yield break;
		}

etc.etc.

Here is the logcat dump:

I/DEBUG   ( 3991): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I/DEBUG   ( 3991): Build fingerprint: 'htc_wwe/htc_ace/ace/ace:2.2.1/FRG83D/296490:user/release-keys'
I/DEBUG   ( 3991): pid: 4558, tid: 4567  >>> dk.fullcontrol.tsur <<<
I/DEBUG   ( 3991): thread: Thread-9
I/DEBUG   ( 3991): signal 11 (SIGSEGV), fault addr 075f32e8
I/DEBUG   ( 3991):  r0 00df2ce8  r1 00a82c98  r2 00a82c98  r3 005d99fc
I/DEBUG   ( 3991):  r4 00a815dc  r5 00000010  r6 00a814b0  r7 075f32e8
I/DEBUG   ( 3991):  r8 075f3318  r9 00a82b58  10 00df2ce8  fp 005d99b8
I/DEBUG   ( 3991):  ip 4ebe5500  sp 4ebe54a4  lr 81139b40  pc 8102f028  cpsr 80000010
I/DEBUG   ( 3991):  d0  6472656767756265  d1  00000000be83ac65
I/DEBUG   ( 3991):  d2  3f3df74c3a727c65  d3  3f80000034000000
I/DEBUG   ( 3991):  d4  c00e423740168501  d5  000000003f919f7f
I/DEBUG   ( 3991):  d6  ff800000ff800000  d7  00000000ff800000
I/DEBUG   ( 3991):  d8  b40000013f800001  d9  00000000b33bbd33
I/DEBUG   ( 3991):  d10 3f80000234000000  d11 0000000034000001
I/DEBUG   ( 3991):  d12 b4000000333bbd2e  d13 000000003f800001
I/DEBUG   ( 3991):  d14 bf9ffbd040168501  d15 000000003f919f80
I/DEBUG   ( 3991):  d16 3feff3041ae39940  d17 3e611d3b63dcfe65
I/DEBUG   ( 3991):  d18 bf56c034de171fd6  d19 3ee51584c35c7f8a
I/DEBUG   ( 3991):  d20 3fa55553e1053a42  d21 3ea51584c35c7f8a
I/DEBUG   ( 3991):  d22 3f9cd496a0000000  d23 3e158f4340000000
I/DEBUG   ( 3991):  d24 3ef99342e0ee5069  d25 3facd496a0000000
I/DEBUG   ( 3991):  d26 3e411622c0000000  d27 3ef99342e0ee5069
I/DEBUG   ( 3991):  d28 0000000000000000  d29 0000000000000000
I/DEBUG   ( 3991):  d30 0000000000000000  d31 0000000000000000
I/DEBUG   ( 3991):  scr 6000001a
I/DEBUG   ( 3991): 
W/System.err( 4558): java.net.ConnectException: xxxx/ip here:port here - Connection refused
W/System.err( 4558): 	at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:254)
W/System.err( 4558): 	at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:533)
W/System.err( 4558): 	at java.net.Socket.connect(Socket.java:1055)
W/System.err( 4558): 	at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:62)
W/System.err( 4558): 	at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:88)
W/System.err( 4558): 	at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHTTPConnection(HttpURLConnectionImpl.java:927)
W/System.err( 4558): 	at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:909)
W/System.err( 4558): 	at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:1152)
W/System.err( 4558): 	at com.unity3d.player.WWW.run(Unknown Source)
I/DEBUG   ( 3991):          #00  pc 0002f028  /data/data/dk.fullcontrol.tsur/lib/libunity.so
I/DEBUG   ( 3991):          #01  pc 00139b3c  /data/data/dk.fullcontrol.tsur/lib/libunity.so
I/DEBUG   ( 3991): 
I/DEBUG   ( 3991): code around pc:
I/DEBUG   ( 3991): 8102f008 e4938004 ec97ca03 e0807308 ee0a4a20 
I/DEBUG   ( 3991): 8102f018 ee4a4aa0 ee0b5a20 ecb12a02 e2878030 
I/DEBUG   ( 3991): 8102f028 ecb78a04 ec98ea03 ee0c4a01 ee4c4a81 
I/DEBUG   ( 3991): 8102f038 ee0d5a01 f5d1f400 e1510002 ecb7aa04 
I/DEBUG   ( 3991): 8102f048 eca44a03 eca42a02 3cb10a03 3affffe5 
I/DEBUG   ( 3991): 
I/DEBUG   ( 3991): code around lr:
I/DEBUG   ( 3991): 81139b20 e3a00001 eaffffdb e1a01009 e1a0000a 
I/DEBUG   ( 3991): 81139b30 e1a0300b e58d6000 e0229594 ebfbd51f 
I/DEBUG   ( 3991): 81139b40 eafffff5 e1a01009 e1a0000a e1a0300b 
I/DEBUG   ( 3991): 81139b50 e58d6000 e0229594 ebfbd541 eaffffee 
I/DEBUG   ( 3991): 81139b60 0041b3e8 0000c988 e3510004 13510002 
I/DEBUG   ( 3991): 
I/DEBUG   ( 3991): stack:
I/DEBUG   ( 3991):     4ebe5464  3f800000  
I/DEBUG   ( 3991):     4ebe5468  00000000  
I/DEBUG   ( 3991):     4ebe546c  00000000  
I/DEBUG   ( 3991):     4ebe5470  00000000  
I/DEBUG   ( 3991):     4ebe5474  3f800000  
I/DEBUG   ( 3991):     4ebe5478  00000000  
I/DEBUG   ( 3991):     4ebe547c  00000000  
I/DEBUG   ( 3991):     4ebe5480  3f800000  
I/DEBUG   ( 3991):     4ebe5484  3f800000  
I/DEBUG   ( 3991):     4ebe5488  00000000  
I/DEBUG   ( 3991):     4ebe548c  3f800000  
I/DEBUG   ( 3991):     4ebe5490  00000000  
I/DEBUG   ( 3991):     4ebe5494  00000000  
I/DEBUG   ( 3991):     4ebe5498  e3a070ad  
I/DEBUG   ( 3991):     4ebe549c  ef9000ad  
I/DEBUG   ( 3991):     4ebe54a0  00000000  
I/DEBUG   ( 3991): #01 4ebe54a4  00000014  
I/DEBUG   ( 3991):     4ebe54a8  00000010  
I/DEBUG   ( 3991):     4ebe54ac  00a814b0  [heap]
I/DEBUG   ( 3991):     4ebe54b0  4ebe5610  
I/DEBUG   ( 3991):     4ebe54b4  00000002  
I/DEBUG   ( 3991):     4ebe54b8  00a82b58  [heap]
I/DEBUG   ( 3991):     4ebe54bc  00000000  
I/DEBUG   ( 3991):     4ebe54c0  00000000  
I/DEBUG   ( 3991):     4ebe54c4  3f800000  
I/DEBUG   ( 3991):     4ebe54c8  00000000  
I/DEBUG   ( 3991):     4ebe54cc  00000000  
I/DEBUG   ( 3991):     4ebe54d0  3f800000  
I/DEBUG   ( 3991):     4ebe54d4  3f800000  
I/DEBUG   ( 3991):     4ebe54d8  00000000  
I/DEBUG   ( 3991):     4ebe54dc  00000000  
I/DEBUG   ( 3991):     4ebe54e0  00000000  
I/DEBUG   ( 3991):     4ebe54e4  00000000  
I/DEBUG   ( 3991):     4ebe54e8  00000000  
D/AudioFlinger( 1218): AudioFlinger::PlaybackThread::Track::destroy() name 4096, calling thread 1218
V/AudioPolicyService( 1218): AudioPolicyService::stopOutput()
V/AudioPolicyService( 1218): stopOutput() tid 1319
V/AudioPolicyService( 1218): stopOutput() get autolock tid 1319
V/AudioPolicyManagerBase( 1218): stopOutput() output 1, stream 3

and just the basic snippet for a port 80 query on an non-existing (404) resource:

W/System.err( 4658): java.io.FileNotFoundException: http://XXX/blabla?cmd=verCheck&ver=1.2
W/System.err( 4658): 	at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:1162)
W/System.err( 4658): 	at com.unity3d.player.WWW.run(Unknown Source)
I/DEBUG   ( 3991):          #00  pc 0002f028  /data/data/dk.fullcontrol.tsur/lib/libunity.so
I/DEBUG   ( 3991):          #01  pc 00139b3c  /data/data/dk.fullcontrol.tsur/lib/libunity.so
I/DEBUG   ( 3991): 
I/DEBUG   ( 3991): code around pc:
I/DEBUG   ( 3991): 8102f008 e4938004 ec97ca03 e0807308 ee0a4a20 
I/DEBUG   ( 3991): 8102f018 ee4a4aa0 ee0b5a20 ecb12a02 e2878030 
I/DEBUG   ( 3991): 8102f028 ecb78a04 ec98ea03 ee0c4a01 ee4c4a81 
I/DEBUG   ( 3991): 8102f038 ee0d5a01 f5d1f400 e1510002 ecb7aa04 
I/DEBUG   ( 3991): 8102f048 eca44a03 eca42a02 3cb10a03 3affffe5

Any clues?

/Thomas

2

Commenting out the version check successfully continues operating the build.

A few lines further on we also grab (via WWW) a file containing news ticker test - works perfectly fine too.

So seems like a bug?!

/T

3

Seems definitely like an android bug. Never seen it on iOS, web or standalone where we had unreachable webservice etc often enough to have hit this for sure

4

We’re on it.
Thanks for the bug report.
Not to mention the awesome repro steps :wink:

5

Tried to make a small repro case, but it didnt trigger the errors. Made a real bug report anyways - thanks D

/T

6

Thats normal isn’t it. try to repro it and dang - gone
try to use it in real - dang boom :wink:

7

Sooo true - I have too many of these. And sometimes I must also admit to not reporting at all when I have things like this where the repro case is either too complicated to do or doesnt trigger the bug :frowning:

Baaaaaad me

/T