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• Why i disconnect every few seconds? using USB wireless adapter

  - by Rev3rse

  i know it's for ubuntu questions..but mint and ubuntu are very similiar and i had the same problem with linux ubuntu too..so i think this is the right place for my question anyway i don't have experience with drivers and other things,after installing Linux on my machine( i did dist-upgrade btw) everything seem to be great because i didn't have to install any driver, after a while i realized that my connection stop after few minutes(actually it shows that I'm connected but it's not) so i have to reconnect and after few minutes it disconnect again. I'm using Alfa USB wireless adapter AWS036H, and my Linux version is 11 i think the driver i'm using is Realtek i searched in the Internet and i found nothing. these are some outputs of few things people usually ask for: Note: I'm NOT using a laptop. dmsg: [19445.604448] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=2.174.220.77 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=104 ID=10466 DF PROTO=TCP SPT=55150 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19448.164050] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=41982 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.33 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=7566 DF PROTO=TCP INCOMPLETE [8 bytes] ] [19465.079565] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=80.128.216.31 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=113 ID=5100 DF PROTO=TCP SPT=50169 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19486.270328] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=90.130.13.122 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=109 ID=22207 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19497.480522] wlan0: deauthenticating from 00:24:c8:4b:46:e0 by local choice (reason=3) [19497.593276] cfg80211: All devices are disconnected, going to restore regulatory settings [19497.593282] cfg80211: Restoring regulatory settings [19497.593346] cfg80211: Calling CRDA to update world regulatory domain [19497.638740] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule: [19497.638745] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638749] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule: [19497.638753] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638756] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule: [19497.638760] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638763] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule: [19497.638766] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638770] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory rule: [19497.638773] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638776] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory rule: [19497.638780] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638783] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory rule: [19497.638787] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638790] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory rule: [19497.638794] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638797] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory rule: [19497.638801] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638804] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule: [19497.638807] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638811] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule: [19497.638814] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638817] cfg80211: Updating information on frequency 2467 MHz for a 20 MHz width channel with regulatory rule: [19497.638821] cfg80211: 2457000 KHz - 2482000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638824] cfg80211: Updating information on frequency 2472 MHz for a 20 MHz width channel with regulatory rule: [19497.638828] cfg80211: 2457000 KHz - 2482000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638831] cfg80211: Updating information on frequency 2484 MHz for a 20 MHz width channel with regulatory rule: [19497.638835] cfg80211: 2474000 KHz - 2494000 KHz @ KHz), (300 mBi, 2000 mBm) [19497.638838] cfg80211: World regulatory domain updated: [19497.638841] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [19497.638845] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [19497.638848] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [19497.638852] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [19497.638855] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [19497.638859] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [19513.145150] wlan0: authenticate with 00:24:c8:4b:46:e0 (try 1) [19513.146910] wlan0: authenticated [19513.252775] wlan0: associate with 00:24:c8:4b:46:e0 (try 1) [19513.255149] wlan0: RX AssocResp from 00:24:c8:4b:46:e0 (capab=0x411 status=0 aid=2) [19513.255154] wlan0: associated [19515.675091] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=91.79.8.40 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x20 TTL=110 ID=42720 DF PROTO=TCP SPT=1945 DPT=6881 WINDOW=65535 RES=0x00 SYN URGP=0 [19525.684312] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=78.13.80.169 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=109 ID=49890 DF PROTO=TCP SPT=53401 DPT=6881 WINDOW=16384 RES=0x00 SYN URGP=0 [19551.856766] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=85.228.39.93 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=103 ID=1162 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19564.623005] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=90.202.21.238 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=114 ID=17881 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19584.855364] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=2.49.151.87 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=117 ID=31716 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19604.688647] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=109.225.124.155 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=112 ID=6656 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19626.362529] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=81.184.50.41 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=114 ID=23241 DF PROTO=TCP SPT=1416 DPT=6881 WINDOW=65535 RES=0x00 SYN URGP=0 [19645.040906] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=92.250.245.244 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=51 ID=0 DF PROTO=TCP SPT=50061 DPT=6881 WINDOW=16384 RES=0x00 SYN URGP=0 [19665.212659] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=87.183.3.18 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=111 ID=1689 DF PROTO=TCP SPT=62817 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19685.036415] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=78.13.80.169 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=109 ID=50638 DF PROTO=TCP SPT=49624 DPT=6881 WINDOW=16384 RES=0x00 SYN URGP=0 [19705.487915] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=217.122.17.82 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=112 ID=19070 DF PROTO=TCP SPT=54795 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19726.779185] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=80.88.116.239 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=109 ID=32168 DF PROTO=TCP SPT=57330 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19744.755673] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=109.124.5.43 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=113 ID=2288 DF PROTO=TCP SPT=6475 DPT=6881 WINDOW=65535 RES=0x00 SYN URGP=0 [19764.449183] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=79.216.35.19 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=113 ID=4281 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19784.456189] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=81.82.25.149 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=114 ID=1866 DF PROTO=TCP SPT=59507 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19804.836687] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=81.56.199.3 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=108 ID=14749 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19824.812685] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=186.28.7.159 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=107 ID=44686 PROTO=UDP SPT=23418 DPT=6881 LEN=28 [19847.683314] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=78.13.80.169 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=108 ID=63046 DF PROTO=TCP SPT=52192 DPT=6881 WINDOW=16384 RES=0x00 SYN URGP=0 [19884.711455] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=84.146.24.238 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=113 ID=27914 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19884.983589] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=2.107.130.61 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=112 ID=7742 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19905.681078] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=95.21.11.121 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=114 ID=31775 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19926.035707] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=109.76.132.55 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=113 ID=28140 DF PROTO=TCP SPT=51905 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19945.668326] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=188.92.0.197 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=113 ID=7865 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [19967.200339] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=83.252.102.172 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=105 ID=28408 DF PROTO=TCP SPT=63505 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [19999.752732] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=79.166.171.200 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=110 ID=36405 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [20007.928719] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=79.235.59.16 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=112 ID=46415 DF PROTO=TCP SPT=4537 DPT=6881 WINDOW=16384 RES=0x00 SYN URGP=0 [20026.181726] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=81.182.169.36 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=106 ID=25126 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [20048.845358] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=87.66.118.104 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=111 ID=18068 DF PROTO=TCP SPT=49928 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [20064.341857] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=77.2.63.153 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=107 ID=7242 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [20090.093490] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=93.16.17.210 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=108 ID=894 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [20104.443995] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=89.83.235.99 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=114 ID=17295 DF PROTO=TCP SPT=58979 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [20128.625374] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=81.62.91.79 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=107 ID=21793 DF PROTO=TCP SPT=51446 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [20151.055506] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=84.135.217.213 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=112 ID=32452 DF PROTO=TCP SPT=55136 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [20164.618874] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=91.79.8.40 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x20 TTL=110 ID=47784 DF PROTO=TCP SPT=2422 DPT=6881 WINDOW=65535 RES=0x00 SYN URGP=0 [20184.337745] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=83.252.212.71 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=107 ID=14544 PROTO=UDP SPT=6881 DPT=6881 LEN=28 [20205.007512] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=91.62.158.247 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=110 ID=21562 DF PROTO=TCP SPT=3933 DPT=6881 WINDOW=65535 RES=0x00 SYN URGP=0 [20225.204018] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=84.146.24.238 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=113 ID=15045 DF PROTO=TCP SPT=49630 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [20244.842290] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=82.82.190.168 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=112 ID=23741 DF PROTO=TCP SPT=50766 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [20266.701649] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=88.153.108.124 DST=192.168.1.6 LEN=48 TOS=0x02 PREC=0x00 TTL=111 ID=206 DF PROTO=TCP SPT=2451 DPT=6881 WINDOW=65535 RES=0x00 SYN URGP=0 [20286.305414] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=78.240.86.73 DST=192.168.1.6 LEN=52 TOS=0x00 PREC=0x00 TTL=107 ID=325 DF PROTO=TCP SPT=65184 DPT=6881 WINDOW=8192 RES=0x00 SYN URGP=0 [20294.293989] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=43133 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.33 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=56899 DF PROTO=TCP INCOMPLETE [8 bytes] ] [20294.297015] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=43134 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.40 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=12080 DF PROTO=TCP INCOMPLETE [8 bytes] ] [20294.297242] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=43135 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.33 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=25195 DF PROTO=TCP INCOMPLETE [8 bytes] ] [20295.478338] wlan0: deauthenticating from 00:24:c8:4b:46:e0 by local choice (reason=3) [20295.552735] cfg80211: All devices are disconnected, going to restore regulatory settings [20295.552742] cfg80211: Restoring regulatory settings [20295.552748] cfg80211: Calling CRDA to update world regulatory domain [20295.680635] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule: [20295.680641] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680644] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule: [20295.680648] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680652] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule: [20295.680655] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680658] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule: [20295.680662] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680665] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory rule: [20295.680669] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680672] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory rule: [20295.680676] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680679] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory rule: [20295.680683] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680687] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory rule: [20295.680690] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680693] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory rule: [20295.680697] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680700] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule: [20295.680704] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680708] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule: [20295.680711] cfg80211: 2402000 KHz - 2472000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680715] cfg80211: Updating information on frequency 2467 MHz for a 20 MHz width channel with regulatory rule: [20295.680718] cfg80211: 2457000 KHz - 2482000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680722] cfg80211: Updating information on frequency 2472 MHz for a 20 MHz width channel with regulatory rule: [20295.680725] cfg80211: 2457000 KHz - 2482000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680728] cfg80211: Updating information on frequency 2484 MHz for a 20 MHz width channel with regulatory rule: [20295.680732] cfg80211: 2474000 KHz - 2494000 KHz @ KHz), (300 mBi, 2000 mBm) [20295.680736] cfg80211: World regulatory domain updated: [20295.680738] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [20295.680742] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [20295.680745] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [20295.680749] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [20295.680752] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [20295.680756] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [20306.009341] wlan0: authenticate with 00:24:c8:4b:46:e0 (try 1) [20306.011225] wlan0: authenticated [20306.118095] wlan0: associate with 00:24:c8:4b:46:e0 (try 1) [20306.120963] wlan0: RX AssocResp from 00:24:c8:4b:46:e0 (capab=0x411 status=0 aid=2) [20306.120967] wlan0: associated [20307.364427] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=87.91.101.130 DST=192.168.1.6 LEN=64 TOS=0x00 PREC=0x00 TTL=49 ID=36839 DF PROTO=TCP SPT=62492 DPT=6881 WINDOW=65535 RES=0x00 SYN URGP=0 [20310.914290] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=43180 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.33 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=56900 DF PROTO=TCP INCOMPLETE [8 bytes] ] [20310.936634] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=43181 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.40 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=12081 DF PROTO=TCP INCOMPLETE [8 bytes] ] [20310.939017] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=43182 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.33 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=25196 DF PROTO=TCP INCOMPLETE [8 bytes] ] [20325.941050] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=217.118.78.99 DST=192.168.1.6 LEN=48 TOS=0x00 PREC=0x00 TTL=113 ID=4407 PROTO=UDP SPT=2970 DPT=6881 LEN=28 [20328.801724] [UFW BLOCK] IN=wlan0 OUT= MAC=00:c0:ca:44:62:d1:00:24:c8:4b:46:e0:08:00 SRC=192.168.1.254 DST=192.168.1.6 LEN=56 TOS=0x00 PREC=0x00 TTL=255 ID=43196 PROTO=ICMP TYPE=3 CODE=0 [SRC=192.168.1.6 DST=91.189.88.33 LEN=52 TOS=0x00 PREC=0x00 TTL=63 ID=56901 DF PROTO=TCP INCOMPLETE [8 bytes] ] ... inxi -N Network: Card-1 Realtek RTL8101E/RTL8102E PCI Express Fast Ethernet controller driver r8169 Card-2 Realtek RTL-8139/8139C/8139C+ driver 8139too /usr/lib/linuxmint/mintWifi/mintWifi.py ------------------------- * I. scanning WIFI PCI devices... ------------------------- * II. querying ndiswrapper... ------------------------- * III. querying iwconfig... lo no wireless extensions. eth0 no wireless extensions. eth1 no wireless extensions. wlan0 IEEE 802.11bg ESSID:"Home" Mode:Managed Frequency:2.437 GHz Access Point: 00:24:C8:4B:46:E0 Bit Rate=54 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=68/70 Signal level=-42 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:1132 Missed beacon:0 ------------------------- * IV. querying ifconfig... eth0 Link encap:Ethernet HWaddr 00:1f:d0:c9:b8:8e UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:43 Base address:0x4000 eth1 Link encap:Ethernet HWaddr 00:0e:2e:77:88:16 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:19 Base address:0xd000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:10696 errors:0 dropped:0 overruns:0 frame:0 TX packets:10696 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3823011 (3.8 MB) TX bytes:3823011 (3.8 MB) wlan0 Link encap:Ethernet HWaddr 00:c0:ca:44:62:d1 inet addr:192.168.1.6 Bcast:255.255.255.255 Mask:255.255.255.0 inet6 addr: fe80::2c0:caff:fe44:62d1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:90424 errors:0 dropped:0 overruns:0 frame:0 TX packets:65201 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:98024465 (98.0 MB) TX bytes:10345450 (10.3 MB) ------------------------- * V. querying DHCP... lspci 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 10) 00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 10) 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) 00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01) 00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 01) 00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01) 01:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9400 GT] (rev a1) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02) 04:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) lsmod Module Size Used by ipt_REJECT 12512 1 ipt_LOG 12784 5 xt_limit 12541 7 xt_tcpudp 12531 8 ipt_addrtype 12535 4 xt_state 12514 7 ip6table_filter 12711 1 ip6_tables 22545 1 ip6table_filter nf_nat_irc 12542 0 nf_conntrack_irc 13138 1 nf_nat_irc nf_nat_ftp 12548 0 nf_nat 24827 2 nf_nat_irc,nf_nat_ftp nf_conntrack_ipv4 19024 9 nf_nat nf_defrag_ipv4 12649 1 nf_conntrack_ipv4 nf_conntrack_ftp 13106 1 nf_nat_ftp nf_conntrack 69744 7 xt_state,nf_nat_irc,nf_conntrack_irc,nf_nat_ftp,nf_nat,nf_conntrack_ipv4,nf_conntrack_ftp iptable_filter 12706 1 ip_tables 18125 1 iptable_filter x_tables 21907 10 ipt_REJECT,ipt_LOG,xt_limit,xt_tcpudp,ipt_addrtype,xt_state,ip6table_filter,ip6_tables,iptable_filter,ip_tables nls_utf8 12493 10 udf 83795 1 crc_itu_t 12627 1 udf usb_storage 43946 1 uas 17676 0 snd_seq_dummy 12686 0 cryptd 19801 0 aes_i586 16956 1 aes_generic 38023 1 aes_i586 binfmt_misc 13213 1 dm_crypt 22463 0 vesafb 13449 1 nvidia 9766978 44 arc4 12473 2 rtl8187 56206 0 mac80211 257001 1 rtl8187 cfg80211 156212 2 rtl8187,mac80211 ppdev 12849 0 snd_hda_codec_realtek 255882 1 parport_pc 32111 1 psmouse 73312 0 eeprom_93cx6 12653 1 rtl8187 snd_hda_intel 24113 5 snd_hda_codec 90901 2 snd_hda_codec_realtek,snd_hda_intel snd_hwdep 13274 1 snd_hda_codec snd_pcm 80042 3 snd_hda_intel,snd_hda_codec snd_seq_midi 13132 0 snd_rawmidi 25269 1 snd_seq_midi snd_seq_midi_event 14475 1 snd_seq_midi snd_seq 51291 3 snd_seq_dummy,snd_seq_midi,snd_seq_midi_event snd_timer 28659 2 snd_pcm,snd_seq snd_seq_device 14110 4 snd_seq_dummy,snd_seq_midi,snd_rawmidi,snd_seq joydev 17322 0 snd 55295 18 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device serio_raw 12990 0 soundcore 12600 1 snd snd_page_alloc 14073 2 snd_hda_intel,snd_pcm lp 13349 0 parport 36746 3 ppdev,parport_pc,lp usbhid 41704 0 hid 77084 1 usbhid dm_raid45 88410 0 xor 21860 1 dm_raid45 btrfs 527388 0 zlib_deflate 26594 1 btrfs libcrc32c 12543 1 btrfs 8139too 23208 0 8139cp 22497 0 r8169 42534 0 floppy 60032 0

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• Quartz.Net Windows Service Configure Logging

  - by Tarun Arora

  In this blog post I’ll be covering, Logging for Quartz.Net Windows Service 01 – Why doesn’t Quartz.Net Windows Service log by default 02 – Configuring Quartz.Net windows service for logging to eventlog, file, console, etc 03 – Results: Logging in action If you are new to Quartz.Net I would recommend going through, A brief Introduction to Quartz.net Walkthrough of Installing & Testing Quartz.Net as a Windows Service Writing & Scheduling your First HelloWorld job with Quartz.Net   01 – Why doesn’t Quartz.Net Windows Service log by default If you are trying to figure out why… The Quartz.Net windows service isn’t logging The Quartz.Net windows service isn’t writing anything to the event log The Quartz.Net windows service isn’t writing anything to a file How do I configure Quartz.Net windows service to use log4Net How do I change the level of logging for Quartz.Net Look no further, This blog post should help you answer these questions. Quartz.NET uses the Common.Logging framework for all of its logging needs. If you navigate to the directory where Quartz.Net Windows Service is installed (I have the service installed in C:\Program Files (x86)\Quartz.net, you can find out the location by looking at the properties of the service) and open ‘Quartz.Server.exe.config’ you’ll see that the Quartz.Net is already set up for logging to ConsoleAppender and EventLogAppender, but only ‘ConsoleAppender’ is set up as active. So, unless you have the console associated to the Quartz.Net service you won’t be able to see any logging. <log4net> <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender"> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%d [%t] %-5p %l - %m%n" /> </layout> </appender> <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender"> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%d [%t] %-5p %l - %m%n" /> </layout> </appender> <root> <level value="INFO" /> <appender-ref ref="ConsoleAppender" /> <!-- uncomment to enable event log appending --> <!-- <appender-ref ref="EventLogAppender" /> --> </root> </log4net> Problem: In the configuration above Quartz.Net Windows Service only has ConsoleAppender active. So, no logging will be done to EventLog. More over the RollingFileAppender isn’t setup at all. So, Quartz.Net will not log to an application trace log file. 02 – Configuring Quartz.Net windows service for logging to eventlog, file, console, etc Let’s change this behaviour by changing the config file… In the below config file, I have added the RollingFileAppender. This will configure Quartz.Net service to write to a log file. (<appender name="GeneralLog" type="log4net.Appender.RollingFileAppender">) I have specified the location for the log file (<arg key="configFile" value="Trace/application.log.txt"/>) I have enabled the EventLogAppender and RollingFileAppender to be written to by Quartz. Net windows service Changed the default level of logging from ‘Info’ to ‘All’. This means all activity performed by Quartz.Net Windows service will be logged. You might want to tune this back to ‘Debug’ or ‘Info’ later as logging ‘All’ will produce too much data to the logs. (<level value="ALL"/>) Since I have changed the logging level to ‘All’, I have added applicationSetting to remove logging log4Net internal debugging. (<add key="log4net.Internal.Debug" value="false"/>) <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="quartz" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" /> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" /> <sectionGroup name="common"> <section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging" /> </sectionGroup> </configSections> <common> <logging> <factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4net"> <arg key="configType" value="INLINE" /> <arg key="configFile" value="Trace/application.log.txt"/> <arg key="level" value="ALL" /> </factoryAdapter> </logging> </common> <appSettings> <add key="log4net.Internal.Debug" value="false"/> </appSettings> <log4net> <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender"> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%d [%t] %-5p %l - %m%n" /> </layout> </appender> <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender"> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%d [%t] %-5p %l - %m%n" /> </layout> </appender> <appender name="GeneralLog" type="log4net.Appender.RollingFileAppender"> <file value="Trace/application.log.txt"/> <appendToFile value="true"/> <maximumFileSize value="1024KB"/> <rollingStyle value="Size"/> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%d{HH:mm:ss} [%t] %-5p %c - %m%n"/> </layout> </appender> <root> <level value="ALL" /> <appender-ref ref="ConsoleAppender" /> <appender-ref ref="EventLogAppender" /> <appender-ref ref="GeneralLog"/> </root> </log4net> </configuration>   Note – Please ensure you restart the Quartz.Net Windows service for the config changes to be picked up by the service   03 – Results: Logging in action Once you start the Quartz.Net Windows Service up, the logging should be initiated to write all activities in the Console, EventLog and File… See screen shots below… Figure – Quartz.Net Windows Service logging all activity to the event log Figure – Quartz.Net Windows Service logging all activity to the application log file Where is the output from log4Net ConsoleAppender? As a default behaviour, the console isn't available in windows services, web services, windows forms. The output will simply be dismissed. Unless you are running the process interactively. Which you can do by firing up Quartz.Server.exe –i to see the output   This was fourth in the series of posts on enterprise scheduling using Quartz.net, in the next post I’ll be covering troubleshooting why a scheduled task hasn’t fired on Quartz.net windows service. All Quartz.Net specific blog posts can listed here. Thank you for taking the time out and reading this blog post. If you enjoyed the post, remember to subscribe to http://feeds.feedburner.com/TarunArora. Stay tuned!

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• PostSharp, Obfuscation, and IL

  - by Simon Cooper

  Aspect-oriented programming (AOP) is a relatively new programming paradigm. Originating at Xerox PARC in 1994, the paradigm was first made available for general-purpose development as an extension to Java in 2001. From there, it has quickly been adapted for use in all the common languages used today. In the .NET world, one of the primary AOP toolkits is PostSharp. Attributes and AOP Normally, attributes in .NET are entirely a metadata construct. Apart from a few special attributes in the .NET framework, they have no effect whatsoever on how a class or method executes within the CLR. Only by using reflection at runtime can you access any attributes declared on a type or type member. PostSharp changes this. By declaring a custom attribute that derives from PostSharp.Aspects.Aspect, applying it to types and type members, and running the resulting assembly through the PostSharp postprocessor, you can essentially declare 'clever' attributes that change the behaviour of whatever the aspect has been applied to at runtime. A simple example of this is logging. By declaring a TraceAttribute that derives from OnMethodBoundaryAspect, you can automatically log when a method has been executed: public class TraceAttribute : PostSharp.Aspects.OnMethodBoundaryAspect { public override void OnEntry(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Entering {0}.{1}.", method.DeclaringType.FullName, method.Name)); } public override void OnExit(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Leaving {0}.{1}.", method.DeclaringType.FullName, method.Name)); } } [Trace] public void MethodToLog() { ... } Now, whenever MethodToLog is executed, the aspect will automatically log entry and exit, without having to add the logging code to MethodToLog itself. PostSharp Performance Now this does introduce a performance overhead - as you can see, the aspect allows access to the MethodBase of the method the aspect has been applied to. If you were limited to C#, you would be forced to retrieve each MethodBase instance using Type.GetMethod(), matching on the method name and signature. This is slow. Fortunately, PostSharp is not limited to C#. It can use any instruction available in IL. And in IL, you can do some very neat things. Ldtoken C# allows you to get the Type object corresponding to a specific type name using the typeof operator: Type t = typeof(Random); The C# compiler compiles this operator to the following IL: ldtoken [mscorlib]System.Random call class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle( valuetype [mscorlib]System.RuntimeTypeHandle) The ldtoken instruction obtains a special handle to a type called a RuntimeTypeHandle, and from that, the Type object can be obtained using GetTypeFromHandle. These are both relatively fast operations - no string lookup is required, only direct assembly and CLR constructs are used. However, a little-known feature is that ldtoken is not just limited to types; it can also get information on methods and fields, encapsulated in a RuntimeMethodHandle or RuntimeFieldHandle: // get a MethodBase for String.EndsWith(string) ldtoken method instance bool [mscorlib]System.String::EndsWith(string) call class [mscorlib]System.Reflection.MethodBase [mscorlib]System.Reflection.MethodBase::GetMethodFromHandle( valuetype [mscorlib]System.RuntimeMethodHandle) // get a FieldInfo for the String.Empty field ldtoken field string [mscorlib]System.String::Empty call class [mscorlib]System.Reflection.FieldInfo [mscorlib]System.Reflection.FieldInfo::GetFieldFromHandle( valuetype [mscorlib]System.RuntimeFieldHandle) These usages of ldtoken aren't usable from C# or VB, and aren't likely to be added anytime soon (Eric Lippert's done a blog post on the possibility of adding infoof, methodof or fieldof operators to C#). However, PostSharp deals directly with IL, and so can use ldtoken to get MethodBase objects quickly and cheaply, without having to resort to string lookups. The kicker However, there are problems. Because ldtoken for methods or fields isn't accessible from C# or VB, it hasn't been as well-tested as ldtoken for types. This has resulted in various obscure bugs in most versions of the CLR when dealing with ldtoken and methods, and specifically, generic methods and methods of generic types. This means that PostSharp was behaving incorrectly, or just plain crashing, when aspects were applied to methods that were generic in some way. So, PostSharp has to work around this. Without using the metadata tokens directly, the only way to get the MethodBase of generic methods is to use reflection: Type.GetMethod(), passing in the method name as a string along with information on the signature. Now, this works fine. It's slower than using ldtoken directly, but it works, and this only has to be done for generic methods. Unfortunately, this poses problems when the assembly is obfuscated. PostSharp and Obfuscation When using ldtoken, obfuscators don't affect how PostSharp operates. Because the ldtoken instruction directly references the type, method or field within the assembly, it is unaffected if the name of the object is changed by an obfuscator. However, the indirect loading used for generic methods was breaking, because that uses the name of the method when the assembly is put through the PostSharp postprocessor to lookup the MethodBase at runtime. If the name then changes, PostSharp can't find it anymore, and the assembly breaks. So, PostSharp needs to know about any changes an obfuscator does to an assembly. The way PostSharp does this is by adding another layer of indirection. When PostSharp obfuscation support is enabled, it includes an extra 'name table' resource in the assembly, consisting of a series of method & type names. When PostSharp needs to lookup a method using reflection, instead of encoding the method name directly, it looks up the method name at a fixed offset inside that name table: MethodBase genericMethod = typeof(ContainingClass).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: get_Prop1 21: set_Prop1 22: DoFoo 23: GetWibble When the assembly is later processed by an obfuscator, the obfuscator can replace all the method and type names within the name table with their new name. That way, the reflection lookups performed by PostSharp will now use the new names, and everything will work as expected: MethodBase genericMethod = typeof(#kGy).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: #kkA 21: #zAb 22: #EF5a 23: #2tg As you can see, this requires direct support by an obfuscator in order to perform these rewrites. Dotfuscator supports it, and now, starting with SmartAssembly 6.6.4, SmartAssembly does too. So, a relatively simple solution to a tricky problem, with some CLR bugs thrown in for good measure. You don't see those every day!

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• PostSharp, Obfuscation, and IL

  - by Simon Cooper

  Aspect-oriented programming (AOP) is a relatively new programming paradigm. Originating at Xerox PARC in 1994, the paradigm was first made available for general-purpose development as an extension to Java in 2001. From there, it has quickly been adapted for use in all the common languages used today. In the .NET world, one of the primary AOP toolkits is PostSharp. Attributes and AOP Normally, attributes in .NET are entirely a metadata construct. Apart from a few special attributes in the .NET framework, they have no effect whatsoever on how a class or method executes within the CLR. Only by using reflection at runtime can you access any attributes declared on a type or type member. PostSharp changes this. By declaring a custom attribute that derives from PostSharp.Aspects.Aspect, applying it to types and type members, and running the resulting assembly through the PostSharp postprocessor, you can essentially declare 'clever' attributes that change the behaviour of whatever the aspect has been applied to at runtime. A simple example of this is logging. By declaring a TraceAttribute that derives from OnMethodBoundaryAspect, you can automatically log when a method has been executed: public class TraceAttribute : PostSharp.Aspects.OnMethodBoundaryAspect { public override void OnEntry(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Entering {0}.{1}.", method.DeclaringType.FullName, method.Name)); } public override void OnExit(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Leaving {0}.{1}.", method.DeclaringType.FullName, method.Name)); } } [Trace] public void MethodToLog() { ... } Now, whenever MethodToLog is executed, the aspect will automatically log entry and exit, without having to add the logging code to MethodToLog itself. PostSharp Performance Now this does introduce a performance overhead - as you can see, the aspect allows access to the MethodBase of the method the aspect has been applied to. If you were limited to C#, you would be forced to retrieve each MethodBase instance using Type.GetMethod(), matching on the method name and signature. This is slow. Fortunately, PostSharp is not limited to C#. It can use any instruction available in IL. And in IL, you can do some very neat things. Ldtoken C# allows you to get the Type object corresponding to a specific type name using the typeof operator: Type t = typeof(Random); The C# compiler compiles this operator to the following IL: ldtoken [mscorlib]System.Random call class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle( valuetype [mscorlib]System.RuntimeTypeHandle) The ldtoken instruction obtains a special handle to a type called a RuntimeTypeHandle, and from that, the Type object can be obtained using GetTypeFromHandle. These are both relatively fast operations - no string lookup is required, only direct assembly and CLR constructs are used. However, a little-known feature is that ldtoken is not just limited to types; it can also get information on methods and fields, encapsulated in a RuntimeMethodHandle or RuntimeFieldHandle: // get a MethodBase for String.EndsWith(string) ldtoken method instance bool [mscorlib]System.String::EndsWith(string) call class [mscorlib]System.Reflection.MethodBase [mscorlib]System.Reflection.MethodBase::GetMethodFromHandle( valuetype [mscorlib]System.RuntimeMethodHandle) // get a FieldInfo for the String.Empty field ldtoken field string [mscorlib]System.String::Empty call class [mscorlib]System.Reflection.FieldInfo [mscorlib]System.Reflection.FieldInfo::GetFieldFromHandle( valuetype [mscorlib]System.RuntimeFieldHandle) These usages of ldtoken aren't usable from C# or VB, and aren't likely to be added anytime soon (Eric Lippert's done a blog post on the possibility of adding infoof, methodof or fieldof operators to C#). However, PostSharp deals directly with IL, and so can use ldtoken to get MethodBase objects quickly and cheaply, without having to resort to string lookups. The kicker However, there are problems. Because ldtoken for methods or fields isn't accessible from C# or VB, it hasn't been as well-tested as ldtoken for types. This has resulted in various obscure bugs in most versions of the CLR when dealing with ldtoken and methods, and specifically, generic methods and methods of generic types. This means that PostSharp was behaving incorrectly, or just plain crashing, when aspects were applied to methods that were generic in some way. So, PostSharp has to work around this. Without using the metadata tokens directly, the only way to get the MethodBase of generic methods is to use reflection: Type.GetMethod(), passing in the method name as a string along with information on the signature. Now, this works fine. It's slower than using ldtoken directly, but it works, and this only has to be done for generic methods. Unfortunately, this poses problems when the assembly is obfuscated. PostSharp and Obfuscation When using ldtoken, obfuscators don't affect how PostSharp operates. Because the ldtoken instruction directly references the type, method or field within the assembly, it is unaffected if the name of the object is changed by an obfuscator. However, the indirect loading used for generic methods was breaking, because that uses the name of the method when the assembly is put through the PostSharp postprocessor to lookup the MethodBase at runtime. If the name then changes, PostSharp can't find it anymore, and the assembly breaks. So, PostSharp needs to know about any changes an obfuscator does to an assembly. The way PostSharp does this is by adding another layer of indirection. When PostSharp obfuscation support is enabled, it includes an extra 'name table' resource in the assembly, consisting of a series of method & type names. When PostSharp needs to lookup a method using reflection, instead of encoding the method name directly, it looks up the method name at a fixed offset inside that name table: MethodBase genericMethod = typeof(ContainingClass).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: get_Prop1 21: set_Prop1 22: DoFoo 23: GetWibble When the assembly is later processed by an obfuscator, the obfuscator can replace all the method and type names within the name table with their new name. That way, the reflection lookups performed by PostSharp will now use the new names, and everything will work as expected: MethodBase genericMethod = typeof(#kGy).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: #kkA 21: #zAb 22: #EF5a 23: #2tg As you can see, this requires direct support by an obfuscator in order to perform these rewrites. Dotfuscator supports it, and now, starting with SmartAssembly 6.6.4, SmartAssembly does too. So, a relatively simple solution to a tricky problem, with some CLR bugs thrown in for good measure. You don't see those every day!

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• PostSharp, Obfuscation, and IL

  - by simonc

  Aspect-oriented programming (AOP) is a relatively new programming paradigm. Originating at Xerox PARC in 1994, the paradigm was first made available for general-purpose development as an extension to Java in 2001. From there, it has quickly been adapted for use in all the common languages used today. In the .NET world, one of the primary AOP toolkits is PostSharp. Attributes and AOP Normally, attributes in .NET are entirely a metadata construct. Apart from a few special attributes in the .NET framework, they have no effect whatsoever on how a class or method executes within the CLR. Only by using reflection at runtime can you access any attributes declared on a type or type member. PostSharp changes this. By declaring a custom attribute that derives from PostSharp.Aspects.Aspect, applying it to types and type members, and running the resulting assembly through the PostSharp postprocessor, you can essentially declare 'clever' attributes that change the behaviour of whatever the aspect has been applied to at runtime. A simple example of this is logging. By declaring a TraceAttribute that derives from OnMethodBoundaryAspect, you can automatically log when a method has been executed: public class TraceAttribute : PostSharp.Aspects.OnMethodBoundaryAspect { public override void OnEntry(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Entering {0}.{1}.", method.DeclaringType.FullName, method.Name)); } public override void OnExit(MethodExecutionArgs args) { MethodBase method = args.Method; System.Diagnostics.Trace.WriteLine( String.Format( "Leaving {0}.{1}.", method.DeclaringType.FullName, method.Name)); } } [Trace] public void MethodToLog() { ... } Now, whenever MethodToLog is executed, the aspect will automatically log entry and exit, without having to add the logging code to MethodToLog itself. PostSharp Performance Now this does introduce a performance overhead - as you can see, the aspect allows access to the MethodBase of the method the aspect has been applied to. If you were limited to C#, you would be forced to retrieve each MethodBase instance using Type.GetMethod(), matching on the method name and signature. This is slow. Fortunately, PostSharp is not limited to C#. It can use any instruction available in IL. And in IL, you can do some very neat things. Ldtoken C# allows you to get the Type object corresponding to a specific type name using the typeof operator: Type t = typeof(Random); The C# compiler compiles this operator to the following IL: ldtoken [mscorlib]System.Random call class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle( valuetype [mscorlib]System.RuntimeTypeHandle) The ldtoken instruction obtains a special handle to a type called a RuntimeTypeHandle, and from that, the Type object can be obtained using GetTypeFromHandle. These are both relatively fast operations - no string lookup is required, only direct assembly and CLR constructs are used. However, a little-known feature is that ldtoken is not just limited to types; it can also get information on methods and fields, encapsulated in a RuntimeMethodHandle or RuntimeFieldHandle: // get a MethodBase for String.EndsWith(string) ldtoken method instance bool [mscorlib]System.String::EndsWith(string) call class [mscorlib]System.Reflection.MethodBase [mscorlib]System.Reflection.MethodBase::GetMethodFromHandle( valuetype [mscorlib]System.RuntimeMethodHandle) // get a FieldInfo for the String.Empty field ldtoken field string [mscorlib]System.String::Empty call class [mscorlib]System.Reflection.FieldInfo [mscorlib]System.Reflection.FieldInfo::GetFieldFromHandle( valuetype [mscorlib]System.RuntimeFieldHandle) These usages of ldtoken aren't usable from C# or VB, and aren't likely to be added anytime soon (Eric Lippert's done a blog post on the possibility of adding infoof, methodof or fieldof operators to C#). However, PostSharp deals directly with IL, and so can use ldtoken to get MethodBase objects quickly and cheaply, without having to resort to string lookups. The kicker However, there are problems. Because ldtoken for methods or fields isn't accessible from C# or VB, it hasn't been as well-tested as ldtoken for types. This has resulted in various obscure bugs in most versions of the CLR when dealing with ldtoken and methods, and specifically, generic methods and methods of generic types. This means that PostSharp was behaving incorrectly, or just plain crashing, when aspects were applied to methods that were generic in some way. So, PostSharp has to work around this. Without using the metadata tokens directly, the only way to get the MethodBase of generic methods is to use reflection: Type.GetMethod(), passing in the method name as a string along with information on the signature. Now, this works fine. It's slower than using ldtoken directly, but it works, and this only has to be done for generic methods. Unfortunately, this poses problems when the assembly is obfuscated. PostSharp and Obfuscation When using ldtoken, obfuscators don't affect how PostSharp operates. Because the ldtoken instruction directly references the type, method or field within the assembly, it is unaffected if the name of the object is changed by an obfuscator. However, the indirect loading used for generic methods was breaking, because that uses the name of the method when the assembly is put through the PostSharp postprocessor to lookup the MethodBase at runtime. If the name then changes, PostSharp can't find it anymore, and the assembly breaks. So, PostSharp needs to know about any changes an obfuscator does to an assembly. The way PostSharp does this is by adding another layer of indirection. When PostSharp obfuscation support is enabled, it includes an extra 'name table' resource in the assembly, consisting of a series of method & type names. When PostSharp needs to lookup a method using reflection, instead of encoding the method name directly, it looks up the method name at a fixed offset inside that name table: MethodBase genericMethod = typeof(ContainingClass).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: get_Prop1 21: set_Prop1 22: DoFoo 23: GetWibble When the assembly is later processed by an obfuscator, the obfuscator can replace all the method and type names within the name table with their new name. That way, the reflection lookups performed by PostSharp will now use the new names, and everything will work as expected: MethodBase genericMethod = typeof(#kGy).GetMethod(GetNameAtIndex(22)); PostSharp.NameTable resource: ... 20: #kkA 21: #zAb 22: #EF5a 23: #2tg As you can see, this requires direct support by an obfuscator in order to perform these rewrites. Dotfuscator supports it, and now, starting with SmartAssembly 6.6.4, SmartAssembly does too. So, a relatively simple solution to a tricky problem, with some CLR bugs thrown in for good measure. You don't see those every day! Cross posted from Simple Talk.

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• Google search results are invalid

  - by Rufus

  I'm writing a program that lets a user perform a Google search. When the result comes back, all of the links in the search results are links not to other sites but to Google, and if the user clicks on one, the page is fetched not from the other site but from Google. Can anyone explain how to fix this problem? My Google URL consists of this: http://google.com/search?q=gargle But this is what I get back when the user clicks on the Wikipedia search result, which was http://www.google.com/url?q=http://en.wikipedia.org/wiki/Gargling&sa=U&ei=_4vkT5y555Wh6gGBeOzECg&ved=0CBMQejAe&usg=AFQjeNHd1eRV8Xef3LGeH6AvGxt-AF-Yjw <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html lang="en" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Gargling - Wikipedia, the free encyclopedia</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta name="generator" content="MediaWiki 1.20wmf5" /> <meta http-equiv="last-modified" content="Fri, 09 Mar 2012 12:34:19 +0000" /> <meta name="last-modified-timestamp" content="1331296459" /> <meta name="last-modified-range" content="0" /> <link rel="alternate" type="application/x-wiki" title="Edit this page" > <link rel="edit" title="Edit this page" > <link rel="apple-touch-icon" > <link rel="shortcut icon" > <link rel="search" type="application/opensearchdescription+xml" > <link rel="EditURI" type="application/rsd+xml" > <link rel="copyright" > <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" > <link rel="stylesheet" href="//bits.wikimedia.org/en.wikipedia.org/load.php?debug=false&amp;lang=en&amp;modules=ext.gadget.teahouse%7Cext.wikihiero%7Cmediawiki.legacy.commonPrint%2Cshared%7Cskins.vector&amp;only=styles&amp;skin=vector&amp;*" type="text/css" media="all" /> <style type="text/css" media="all">#mwe-lastmodified { display: none; }</style><meta name="ResourceLoaderDynamicStyles" content="" /> <link rel="stylesheet" href="//bits.wikimedia.org/en.wikipedia.org/load.php?debug=false&amp;lang=en&amp;modules=site&amp;only=styles&amp;skin=vector&amp;*" type="text/css" media="all" /> <style type="text/css" media="all">a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none} /* cache key: enwiki:resourceloader:filter:minify-css:7:d5a1bf6cbd05fc6cc2705e47f52062dc */</style>

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• JPA exception: Object: ... is not a known entity type.

  - by Toto

  I'm new to JPA and I'm having problems with the autogeneration of primary key values. I have the following entity: package jpatest.entities; import java.io.Serializable; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity public class MyEntity implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; public Long getId() { return id; } public void setId(Long id) { this.id = id; } private String someProperty; public String getSomeProperty() { return someProperty; } public void setSomeProperty(String someProperty) { this.someProperty = someProperty; } public MyEntity() { } public MyEntity(String someProperty) { this.someProperty = someProperty; } @Override public String toString() { return "jpatest.entities.MyEntity[id=" + id + "]"; } } and the following main method in other class: public static void main(String[] args) { EntityManagerFactory emf = Persistence.createEntityManagerFactory("JPATestPU"); EntityManager em = emf.createEntityManager(); em.getTransaction().begin(); MyEntity e = new MyEntity("some value"); em.persist(e); /* (exception thrown here) */ em.getTransaction().commit(); em.close(); emf.close(); } This is my persistence unit: <?xml version="1.0" encoding="UTF-8"?> <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"> <persistence-unit name="JPATestPU" transaction-type="RESOURCE_LOCAL"> <provider>oracle.toplink.essentials.PersistenceProvider</provider> <class>jpatest.entities.MyEntity</class> <properties> <property name="toplink.jdbc.user" value="..."/> <property name="toplink.jdbc.password" value="..."/> <property name="toplink.jdbc.url" value="jdbc:mysql://localhost:3306/jpatest"/> <property name="toplink.jdbc.driver" value="com.mysql.jdbc.Driver"/> <property name="toplink.ddl-generation" value="create-tables"/> </properties> </persistence-unit> </persistence> When I execute the program I get the following exception in the line marked with the proper comment: Exception in thread "main" java.lang.IllegalArgumentException: Object: jpatest.entities.MyEntity[id=null] is not a known entity type. at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:3212) at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerImpl.persist(EntityManagerImpl.java:205) at jpatest.Main.main(Main.java:...) What am I missing?

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• Unity.ResolutionFailedException - Resolution of the dependency failed

  - by Anibas

  I have the following code: public static IEngine CreateEngine() { UnityContainer container = Unity.LoadUnityContainer(DefaultStrategiesContainerName); IEnumerable<IStrategy> strategies = container.ResolveAll<IStrategy>(); ITraderProvider provider = container.Resolve<ITraderProvider>(); return new Engine(provider, new List<IStrategy>(strategies)); } and the config: <unity> <typeAliases> <typeAlias alias="singleton" type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager, Microsoft.Practices.Unity" /> <typeAlias alias="weakRef" type="Microsoft.Practices.Unity.ExternallyControlledLifetimeManager, Microsoft.Practices.Unity" /> <typeAlias alias="Strategy" type="ADTrader.Core.Contracts.IStrategy, ADTrader.Core" /> <typeAlias alias="Trader" type="ADTrader.Core.Contracts.ITraderProvider, ADTrader.Core" /> </typeAliases> <containers> <container name="strategies"> <types> <type type="Strategy" mapTo="ADTrader.Strategies.ThreeTurningStrategy, ADTrader.Strategies" name="1" /> <type type="Trader" mapTo="ADTrader.MbTradingProvider.MBTradingProvider, ADTrader.MbTradingProvider" /> </types> </container> </containers></unity> I am getting the following exception: Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "ADTrader.Core.Contracts.ITraderProvider", name = "". Exception message is: The current build operation (build key Build Key[ADTrader.MbTradingProvider.MBTradingProvider, null]) failed: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Strategy type BuildPlanStrategy, index 3) --- Microsoft.Practices.ObjectBuilder2.BuildFailedException: The current build operation (build key Build Key[ADTrader.MbTradingProvider.MBTradingProvider, null]) failed: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Strategy type BuildPlanStrategy, index 3) --- System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at MBTCOMLib.MbtComMgrClass.EnableSplash(Boolean bEnable) at ADTrader.MbTradingProvider.MBTradingProvider..ctor() at BuildUp_ADTrader.MbTradingProvider.MBTradingProvider(IBuilderContext ) at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) --- End of inner exception stack trace --- at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.Builder.BuildUp(IReadWriteLocator locator, ILifetimeContainer lifetime, IPolicyList policies, IStrategyChain strategies, Object buildKey, Object existing) at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) --- End of inner exception stack trace --- at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) at Microsoft.Practices.Unity.UnityContainer.Resolve(Type t, String name) at Microsoft.Practices.Unity.UnityContainerBase.ResolveT at ADTrader.Engine.EngineFactory.CreateEngine() Any idea?

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• How to set text in Y-axis, instead of numbers, in a RadChart component from Telerik with Bar-type

  - by radbyx

  Hi, I have made an bar RadChart with "SeriesOrientation="Horizontal"". I have the text showing at the end for each bars, but instead I would like that text to be listet in the y-axis, instead of the 1,2,3.. numbers. It seems like i'm not allow to set any text in the y-axis, is there a property I can set? Here is my code snippes: === .ascx === <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <telerik:RadChart ID="RadChart1" runat="server" Skin="WebBlue" AutoLayout="true" Height="350px" Width="680px" SeriesOrientation="Horizontal"> <Series> <telerik:ChartSeries DataYColumn="UnitPrice" Name="Product Unit Price"> </telerik:ChartSeries> </Series> <PlotArea> <YAxis> <Appearance> <TextAppearance TextProperties-Font="Verdana, 8.25pt, style=Bold" /> </Appearance> </YAxis> <XAxis DataLabelsColumn="TenMostExpensiveProducts"> </XAxis> </PlotArea> <ChartTitle> <TextBlock Text="Ten Most Expensive Products" /> </ChartTitle> </telerik:RadChart> </ContentTemplate> </asp:UpdatePanel> ========================= === .ascx === protected void Page_Load(object sender, EventArgs e) { RadChart1.AutoLayout = false; RadChart1.Legend.Visible = false; // Create a ChartSeries and assign its name and chart type ChartSeries chartSeries = new ChartSeries(); chartSeries.Name = "Name"; chartSeries.Type = ChartSeriesType.Bar; // add new items to the series, // passing a value and a label string chartSeries.AddItem(98, "Product1"); chartSeries.AddItem(95, "Product2"); chartSeries.AddItem(100, "Product3"); chartSeries.AddItem(75, "Product4"); chartSeries.AddItem(1, "Product5"); // add the series to the RadChart Series collection RadChart1.Series.Add(chartSeries); // add the RadChart to the page. // this.Page.Controls.Add(RadChart1); // RadChart1.Series[0].Appearance.LegendDisplayMode = ChartSeriesLegendDisplayMode.Nothing; // RadChart1.Series[0].DataYColumn = "Uptime"; RadChart1.PlotArea.XAxis.DataLabelsColumn = "Name"; RadChart1.PlotArea.XAxis.Appearance.TextAppearance.TextProperties.Font = new System.Drawing.Font("Verdana", 8); RadChart1.BackColor = System.Drawing.Color.White; RadChart1.Height = 350; RadChart1.Width = 570; RadChart1.DataBind(); } I want to have the text: "Product1", "Product2", ect in the y-axis, can anyone help? Thx.

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• How to resolve "TNS-12520 TNS:listener could not find available handler for requested type"?

  - by Roman Kagan

  I have brand new MacBook Pro (Mac OS 10.6.3) and installed Oracle's SQLDeveloper. After doing so, I set the connection and was connecting just fine. But after an hour or so I got "TNS-12520 TNS:listener could not find available handler for requested type". I wonder how can I fix it?

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• help with xml parsing using php

  - by fayer

  i've got following example xml: <entity id="1"> <name>computer</name> <type>category</type> <entities> <entity id="2"> <name>mac</name> <type>category</type> </entity> <entity id="3"> <name>linux</name> <type>category</type> <entities> <entity id="4"> <name>ubuntu</name> <type>category</type> </entity> <entity id="5"> <name>redhat</name> <type>category</type> <entities> <entity id="6"> <name>server</name> <type>category</type> </entity> <entity id="7"> <name>desktop</name> <type>category</type> </entity> </entities> </entity> </entities> </entity> </entities> </entity> if i've got an id, lets say 5. is it possible to retrieve the following: the name of the entity with the id=5 (redhat) ALL the child entities and their name and id (server/6 and desktop/7) all the parent entities and their name and id (computer/1, mac/2 and linux/3) im a noob on parsing xml. is this accomplished by xpath only or xquery/xpath? i would appreciate if someone could give me some example code to do this with simplexml. thanks!

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• How to serialize parameters in Web Service method

  - by Georgi

  Hi, I have this problem. I have WCF .Net C# web service with this method: public interface IMyService { // TODO: Add your service operations here [OperationContract] ListOfRequests GetListOfRequests(string par1, string par2, string par3, DateTime par4, DateTime par5, string par6, string par7); } public class MyService : IMyService { public ListOfRequests GetListOfRequests(string par1, string par2, string par3, DateTime par4, DateTime par5, string par6, string par7) { // .... web method code here; } } The problem is that when I generate the web service the wsdl schema return this: <xs:element name="GetListOfRequests"> <xs:complexType> <xs:sequence> <xs:element minOccurs="0" name="par1" nillable="true" type="xs:string" /> <xs:element minOccurs="0" name="par2" nillable="true" type="xs:string" /> <xs:element minOccurs="0" name="par3" nillable="true" type="xs:string" /> <xs:element minOccurs="0" name="par4" type="xs:dateTime" /> <xs:element minOccurs="0" name="par5" type="xs:dateTime" /> <xs:element minOccurs="0" name="par6" nillable="true" type="xs:string" /> <xs:element minOccurs="0" name="par7" nillable="true" type="xs:string" /> </xs:sequence> </xs:complexType> </xs:element> and I want my parameters to be not null like this: <xs:element name="GetListOfRequests"> <xs:complexType> <xs:sequence> <xs:element minOccurs="1" name="par1" nillable="false" type="xs:string" /> <xs:element minOccurs="1" name="par2" nillable="false" type="xs:string" /> <xs:element minOccurs="1" name="par3" nillable="false" type="xs:string" /> <xs:element minOccurs="1" name="par4" type="xs:dateTime" /> <xs:element minOccurs="1" name="par5" type="xs:dateTime" /> <xs:element minOccurs="1" name="par6" nillable="false" type="xs:string" /> <xs:element minOccurs="0" name="par7" nillable="true" type="xs:string" /> </xs:sequence> </xs:complexType> </xs:element> How can I serizalize parameters to achieve this? Thank you in advance for your help. Regards, Georgi

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• Star Rating widget for jQuery UI

  - by Roger

  I was introduced to the Star Rating widget for jQuery UI: http://orkans-tmp.22web.net/star_rating/ I was originally using this one: http://www.fyneworks.com/jquery/star-rating/ Is there any difference between using the two? Well trying to use the jquery UI one, I can't get the input buttons to show up as stars. I have these js and css files included: <script src="jquery-1.3.2.min.js" type="text/javascript"></script> <script src="jquery-ui-1.7.2.custom.min.js" type="text/javascript"></script> <script src="ui.stars.js" type="text/javascript"></script> <link href="ui.stars.css" type="text/css" rel="stylesheet" /> And for my code, simply: <form> Rating: <span id="stars-cap"></span> <div id="stars-wrapper1"> <input type="radio" name="newrate" value="1" title="Very poor" /> <input type="radio" name="newrate" value="2" title="Poor" /> <input type="radio" name="newrate" value="3" title="Not that bad" /> <input type="radio" name="newrate" value="4" title="Fair" /> <input type="radio" name="newrate" value="5" title="Average" checked="checked" /> <input type="radio" name="newrate" value="6" title="Almost good" /> <input type="radio" name="newrate" value="7" title="Good" /> <input type="radio" name="newrate" value="8" title="Very good" /> <input type="radio" name="newrate" value="9" title="Excellent" /> <input type="radio" name="newrate" value="10" title="Perfect" /> </div> </form> All the files and images are in the same folder. I've never used jquery UI before, so I'm not sure if all I need is that file. I'm not sure if it needs it either, the other star rating plugin I was using didn't require it. Anyone know what I'm missing anything?

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• Unity and Object Creation

  - by William

  I am using unity as my IoC container. I am trying to implement a type of IProviderRepository. The concrete implementation has a constructor that accepts a type of IRepository. When I remove the constructor parameter from the concrete implementation everything works fine. I am sure the container is wired correctly. When I try to create the concrete object with the constructor I receive the following error: "The current build operation (build key Build Key[EMRGen.Infrastructure.Data.IRepository1[EMRGen.Model.Provider.Provider], null]) failed: The current type, EMRGen.Infrastructure.Data.IRepository1[EMRGen.Model.Provider.Provider], is an interface and cannot be constructed. Are you missing a type mapping? (Strategy type BuildPlanStrategy, index 3)". Is it possible to achieve the above mention functionality with Unity? Namely have Unity infer a concrete type from the Interface and also inject the constructor of the concrete type with the appropriate concrete object based on constructor parameters. Below is sample of my types defined in Unity and a skeleton class listing for what I want to achieve. IProviderRepository is implemented by ProviderRepository which has a constructor that expects a type of IRepository. <typeAlias alias="ProviderRepositoryInterface" type="EMRGen.Model.Provider.IProviderRepository, EMRGen.Model" /> <typeAlias alias="ProviderRepositoryConcrete" type="EMRGen.Infrastructure.Repositories.Providers.ProviderRepository, EMRGen.Infrastructure.Repositories" /> <typeAlias alias="ProviderGenericRepositoryInterface" type="EMRGen.Infrastructure.Data.IRepository`1[[EMRGen.Model.Provider.IProvider, EMRGen.Model]], EMRGen.Infrastructure" /> <typeAlias alias="ProviderGenericRepositoryConcrete" type="EMRGen.Infrastructure.Repositories.EntityFramework.ApplicationRepository`1[[EMRGen.Model.Provider.Provider, EMRGen.Model]], EMRGen.Infrastructure.Repositories" /> <!-- Provider Mapping--> <typeAlias alias="ProviderInterface" type="EMRGen.Model.Provider.IProvider, EMRGen.Model" /> <typeAlias alias="ProviderConcrete" type="EMRGen.Model.Provider.Doctor, EMRGen.Model" /> //Illustrate the call being made inside my class public class PrescriptionService { PrescriptionService() { IUnityContainer uc = UnitySingleton.Instance.Container; UnityServiceLocator unityServiceLocator = new UnityServiceLocator(uc); ServiceLocator.SetLocatorProvider(() => unityServiceLocator); IProviderRepository pRepository = ServiceLocator.Current.GetInstance<IProviderRepository>(); } } public class GenericRepository<IProvider> : IRepository<IProvider> { } public class ProviderRepository : IProviderRepository { private IRepository<IProvider> _genericProviderRepository; //Explict public default constructor public ProviderRepository(IRepository<IProvider> genericProviderRepository) { _genericProviderRepository = genericProviderRepository; } }

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• XStream parse attributes and values at the same time

  - by gurbieta

  Hi, I have the following XML <search ver="3.0"> <loc id="ARBA0009" type="1">Buenos Aires, Argentina</loc> <loc id="BRXX1283" type="1">Buenos Aires, Brazil</loc> <loc id="ARDF0127" type="1">Aeroparque Buenos Aires, Argentina</loc> <loc id="MXJO0669" type="1">Concepcion De Buenos Aires, Mexico</loc> <loc id="MXPA1785" type="1">San Nicolas De Buenos Aires, Mexico</loc> <loc id="ARBA0005" type="1">Balcarce, Argentina</loc> <loc id="ARBA0008" type="1">Bragado, Argentina</loc> <loc id="ARBA0010" type="1">Campana, Argentina</loc> <loc id="ARBA0016" type="1">Chascomus, Argentina</loc> <loc id="ARBA0019" type="1">Chivilcoy, Argentina</loc> </search> And a City class public class City { private String id; private Integer type; private String name; // getters & setters... } I tried the following aliases to parse the XML xStream.alias("search", List.class); xStream.alias("loc", City.class); xStream.useAttributeFor("id", String.class); xStream.useAttributeFor("type", Integer.class); But I can't figure out how to set the value of the "loc" tag, if I try to transform the City object in XML I get <search> <loc id="ARBA0001" type="1"> <name>Buenos Aires</name> </loc> </search> When I really need to get this <search> <loc id="ARBA0001" type="1">Buenos Aires</loc> </search> Then, if I try to parse the XML to a City object I get the field "name" with a null value. Anybody knows how to set te correct aliases to do this? Thanks in advance.

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• When in Debug mode in Java, is there anything like a Console where I can type commands?

  - by devoured elysium

  Is it possible in Eclipse to have a Console, where when in Debug mode I can try out things? Like in python, where I can type at any moment for example 1+1 or myVariable.toString(), etc? C# has a similar concept with the F# shell. I'd like to inspect my variables at run-time and try out some methods, having that kind of console would be of great help. Thanks

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• How can I set a default content-type of text/html in my web.config?

  - by Adrian Grigore

  I'd like to set the default content-type for web pages in my ASP.NET MVC application to text/html. I know this can be done by adding a ContentType="text/html" to all of my <%Page% elements, but I'd prefer to use the web.config instead. How can I do that? Thanks, Adrian

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• In C#, why should I use the 'var' data type?

  - by mcass20

  In C#, is there any reason to use the var data type other than to reduce "code noise"? I'm struggling to see a real value here.

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• In Protobuf-net how can I pass an array of type object with objects of different types inside, knowi

  - by cloudraven

  I am trying to migrate existing code that uses XmlSerializer to protobuf-net due to the increased performance it offers, however I am having problems with this specific case. I have an object[] that includes parameters that are going to be sent to a remote host (sort of a custom mini rpc facility). I know the set of types from which these parameters can be, but I cannot tell in advance in which order they are going to be sent. I have three constraints. The first is that I am running in Compact Framework, so I need something that works there. Second, as I mentioned performance is a big concern (on the serializing side) so I would rather avoid using a lot of reflection there if possible. And the most important is that I care about the order in which this parameters were sent. Using XmlSerializer it was easy just adding XmlInclude, but for fields there is nothing equivalent as far as I know in Protobuf-net. So, is there a way to do this? Here is a simplified example. [Serializable] [XmlInclude(typeof(MyType1)), XmlInclude(typeof(MyType2)), XmlInclude(typeof(MyType3)) public class Message() { public object[] parameters; public Message(object[] parms) { parameters = parms; } } Message m = new Message(new object[] {MyType1(), 33, "test", new MyType3(), new MyType3()}); MemoryStream ms = new MemoryStream(); XmlSerializer xml = new XmlSerializer(typeof(Message)); xml.Serialize(ms,xml); That will just work with XmlSerializer, but if I try to convert it to protobuf-net I will get a "No default encoding for Object" message. The best I came up with is to use generics and [ProtoInclude] as seen in this example. Since I can have different object types within the array this doesn't quite make it. I added a generic List for each potential type and a property with [ProtoIgnore] with type object[] to add them and get them. I have to use reflection when adding them (to know in which array to put each item) which is not desirable and I still can't preserve the ordering as I just extract all the items on each list one by one and put them into a new object[] array on the property get. I wonder if there is a way to accomplish this?

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• Is it possible to specify both upper and lower bound constraints on type parameters in Java?

  - by Hosam Aly

  Is it possible to specify both upper and lower bound constraints on type parameters in Java? I found a conversation in Sun's forum in which this issue was discussed (apparently before the generics feature was finalized), but there was no final answer. In summary, is there a valid syntax to do this: public class MyClass<T extends Number super Integer> ?

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• ELMAH not logging in ASP.NET MVC 2

  - by PsychoCoder

  I cannot figure out what I'm doing wrong here, trying to use ELMAH in my MVC 2 application and it doesnt log anything, ever. Here's what I have in my web.config (relevant parts) <sectionGroup name="elmah"> <section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah" /> <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah" /> <section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah" /> <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah" /> </sectionGroup> <elmah> <security allowRemoteAccess="0" /> <errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="ELMAH.SqlServer" /> <!-- <errorMail from="[email protected]" to="[email protected]" cc="" subject="Elmah Error" async="true" smtpPort="25" smtpServer="[EmailServerName]" userName="" password="" /> <errorLog type="Elmah.XmlFileErrorLog, Elmah" logPath="~/App_Data" /> --> </elmah> <connectionStrings> ... <add name="ELMAH.SqlServer" connectionString="data source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\ELMAH_Logging.mdf;Integrated Security=SSPI;Connect Timeout=30;User Instance=True;" providerName="System.Data.SqlClient"/> </connectionStrings> <system.Web> <httpHandlers> <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" /> ... </httpHandlers> <httpModules> <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" /> <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" /> <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" /> ... </httpModules> </system.Web> <system.webServer> <validation validateIntegratedModeConfiguration="false" /> <modules runAllManagedModulesForAllRequests="true"> <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" /> <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" /> <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" /> </modules> <handlers> <add name="Elmah" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah"/> ... </handlers> </system.webServer> Then using the code from DotNetDarren.com but no matter what I do no exceptions are ever logged?

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• Class not being found online but works locally -- CS0246: The type or namespace name 'Class' could n

  - by Andrew G. Johnson

  I am getting this error after uploading my web app to my Rackspace box. CS0246: The type or namespace name 'User' could not be found (are you missing a using directive or an assembly reference?) It's odd because it works fine on my local computer where I do development. The actual line of code is: public User user = new User(); I am using C#.

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• How to pass SQLXML type to view in Spring MVC?

  - by Horacy Oliwka

  Hello! In my webapp controller I'm getting results from the db, which are of type SQLXML. I want to pass it to the view to be returned verbatim (as XML). The problem is, the data associated with SQLXML is released as soon as I leave JdbcTemplate call. How then should I pass the data to the view using a model? Best regards, ho.

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• WPF: How do I get different templates based on a list-item's type?

  - by Jonathan Allen

  I heard that I could create a collection of mixed types and have a different Data Template for each type. How woudl I do that for a ListBox?

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• How can be possible to use anonymous type fields without know them ?

  - by Freshblood

  Hello everybody It is really looks so cool to me how GridView's DataSource property gets anonymous type and shows results in Grid . Simply Grid.DataSource = from order in db.OrdersSet select new { order.PersonSet.Name,order.PersonSet.SurName}; How this mechanism work? how can i do something like this ?

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