I'm glad to hear someone else is seeing this. I've submitted this as a bug (http://code.google.com/p/android/issues/detail?id=2764). It would really help if anyone who has 1.5 on a device could say whether they've seen this sort of behavior--either getting unknown host errors (check the log for InetAddress errors like below), or taking a really long time to open a web page etc.
The bug report reads as follows: -- Running the 1.5 SDK on Windows XP SP2, the DNS client on the emulator periodically seems to get confused and do the following: 1. Re-transmit a valid query 4 times, with 5-second delays between each query, even though it receives a valid response each time. 2. Then append garbage to the domain name being queried and query this for 4 times, of course receiving an NXDOMAIN response each time. It appears that it then always throws an UnknownHostException, which shows up in the log as: 05-25 18:45:04.568 4833 4848 I InetAddress: Unknown host www.google.com, throwing UnknownHostException 05-25 18:45:45.448 4833 4851 I InetAddress: Unknown host csi.gstatic.com, throwing UnknownHostException It seems to start doing this some time after the emulator is started, but there's no regular pattern that I can see. This has also been observed by at least one other developer (see http://groups.google.com/group/android-developers/browse_thread/thread/cd5be36a07ad1a3d/ba559f2e2ff06e32#ba559f2e2ff06e32). I took a network trace with Wireshark of the DNS traffic while opening www.google.com in the browser and have attached both the text and binary dumps of it. Here's an excerpt: 57 13:45:20.080441 192.168.0.108 24.93.41.127 DNS Standard query A csi.gstatic.com 58 13:45:20.150069 24.93.41.127 192.168.0.108 DNS Standard query response CNAME csi.l.google.com A 209.85.165.101 A 209.85.165.102 A 209.85.165.113 A 209.85.165.100 59 13:45:25.082077 192.168.0.108 24.93.41.128 DNS Standard query A csi.gstatic.com 60 13:45:25.104063 24.93.41.128 192.168.0.108 DNS Standard query response CNAME csi.l.google.com A 209.85.165.100 A 209.85.165.101 A 209.85.165.102 A 209.85.165.113 61 13:45:30.077230 192.168.0.108 24.93.41.127 DNS Standard query A csi.gstatic.com 62 13:45:30.098362 24.93.41.127 192.168.0.108 DNS Standard query response CNAME csi.l.google.com A 209.85.165.113 A 209.85.165.100 A 209.85.165.101 A 209.85.165.102 63 13:45:35.077796 192.168.0.108 24.93.41.128 DNS Standard query A csi.gstatic.com 64 13:45:35.101998 24.93.41.128 192.168.0.108 DNS Standard query response CNAME csi.l.google.com A 209.85.165.101 A 209.85.165.102 A 209.85.165.113 A 209.85.165.100 65 13:45:40.082501 192.168.0.108 24.93.41.127 DNS Standard query A csi.gstatic.com.\360\v 66 13:45:40.259945 24.93.41.127 192.168.0.108 DNS Standard query response, No such name 67 13:45:45.081006 192.168.0.108 24.93.41.128 DNS Standard query A csi.gstatic.com.\360\v 68 13:45:45.165518 24.93.41.128 192.168.0.108 DNS Standard query response, No such name 69 13:45:50.076779 192.168.0.108 24.93.41.127 DNS Standard query A csi.gstatic.com.\360\v 70 13:45:50.143289 24.93.41.127 192.168.0.108 DNS Standard query response, No such name 71 13:45:55.078268 192.168.0.108 24.93.41.128 DNS Standard query A csi.gstatic.com.\360\v 72 13:45:55.103427 24.93.41.128 192.168.0.108 DNS Standard query response, No such name Note that it keeps retrying every 5 seconds, even when it got a valid response. Then see after 4 queries with the correct domain name it starts appending garbage to the domain name (csi.gstatic.com.\360\v). And this is definitely what's in the packet, the dump looks like this (see the 02, f0, 0b starting at offset 46): 0000 00 1b 24 72 bc 38 00 1d 7e f0 a0 53 08 00 45 00 ..$r.8.. ~..S..E. 0010 00 8b d1 13 40 00 f7 11 af 5c 18 5d 29 80 c0 a8 ....@... . \.])... 0020 00 6c 00 35 c1 23 00 77 f0 29 2b 01 85 83 00 01 .l.5.#.w .) +..... 0030 00 00 00 01 00 00 03 63 73 69 07 67 73 74 61 74 .......c si.gstat 0040 69 63 03 63 6f 6d 02 f0 0b 00 00 01 00 01 00 00 ic.com.. ........ 0050 06 00 01 00 00 2a 26 00 40 01 61 0c 72 6f 6f 74 .....*&. @.a.root 0060 2d 73 65 72 76 65 72 73 03 6e 65 74 00 05 6e 73 - servers .net..ns 0070 74 6c 64 0c 76 65 72 69 73 69 67 6e 2d 67 72 73 tld.veri sign- grs 0080 03 63 6f 6d 00 77 bf b5 54 00 00 07 08 00 00 03 .com.w.. T....... 0090 84 00 09 3a 80 00 01 51 80 ...:...Q . As annoying as this is on the emulator, my main concern of course is that it's also a problem on the device, which would be a disaster. -- Peter --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
