changtimwu / changtimwu.github.com Goto Github PK

View Code? Open in Web Editor NEW

7.0 7.0 2.0 1.42 MB

Tim's testing/practice notes

CSS 30.89% JavaScript 17.96% HTML 51.05% Shell 0.10%

changtimwu.github.com's People

Contributors

Stargazers

Watchers

Forkers

arasharchor liyancas

changtimwu.github.com's Issues

mobile design study

https://www.google.com/fonts/specimen/Oswald
The characters of Oswald have been re-drawn and reformed to better fit the pixel grid of standard digital screens. Oswald is designed to be used freely across the internet by web browsers on desktop computers, laptops and mobile devices.

PTP/1588 and PHY

ordinary clock master and ordinary slave can be done in this way.
http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/DM00030825.pdf

minimized pages in 24KB

http://betterexplained.com/examples/compressed/index.htm
http://youmightnotneedjquery.com/

all in one index.html

jade. includes all subpages
css inline
js inline

modbus/PLC

http://infiniteautomation.com/ free download scada software

throughts and trends

FBOSS: https://code.facebook.com/posts/843620439027582/facebook-open-switching-system-fboss-and-wedge-in-the-open/

Will it make us in trouble?

https://code.facebook.com/posts/opencompute/

angular advance study

login and route (https://docs.google.com/file/d/0B4F6Csor-S1cNThqekp4NUZCSmc/edit)
- active user profile is embedded in index.html(server side include)
- and in the index.html. It creates an angular const which offers the active user profile.
how to implement a service which supporting promise
- study promise
- how to make babel compile into es-5 compatible promise
ngCloak

study openwrt bleeding edge on ar71xx/mvebu

setup tplink as a test device

upgrade with the trunk binary which was built from https://dev.openwrt.org/changeset/46421

ideas

http://www.inboundjournals.com/rtb-real-time-bidding-the-future-of-online-advertising/
http://mopcon.org/2015/schedule.php
https://gitter.im/MOPCON/mopcon-chat

use github issue as blog

https://github.com/lifesinger/lifesinger.github.com/issues

This guy runs his blog in this way and I have to say

What a great idea!

Life is a series of issues.

tools

ssh -L 9000:192.168.1.120:80 [email protected]
or
ssh -p 2222 -L 9000:192.168.1.120:80 timac
or
ssh -p 2222 -L 9322:192.168.1.3:22 -L 9142:vbox:22 timac

then
http://localhost:9000

vnc over ssh
ssh -p 2222 -L 9000:localhost:5900 timac

then
using remote desk connect to localhost:9000

61375 study

typhoon day

swixcore js

account sync
IP access support range
fix UI mispelling

peridot

save initial script on EEPROM
trace why no response on RMGMT
create libperidot and put some C code of basic reg read/write

WLAN

take a look how tomato physicially works
need to buy a new AP?
glibc openwrt

GO & WEB & RPC

net/rpc is too cumbersome
anyway to avoid repack args on both sides?

AWS related

my first time using elastic beanstalk(EB). I'm like to use EB as the gateway to bridge OverC and AWS IoT.

It default turns on ELB and ELB has some issues about websocket.

http://stackoverflow.com/questions/9184895/how-do-you-get-amazons-elb-with-https-ssl-to-work-with-web-sockets

govreport hsrprot

Study the Protocol
High-availability Seamless Redundancy Protocol (HSR)

HSR is a Layer 2 redundancy protocol for Ethernet. HSR adds a header to each frame, and duplicates the frame, sending it along two directions of a ring. Nodes in the ring pass the frame along the ring, using the header to discard duplicates.

Example traffic

Ethernet II, Src: ZurichUn_15:77:84 (00:15:12:15:77:84), Dst: IntelCor_5c:22:42 (00:1b:21:5c:22:42)
...
High-availability Seamless Redundancy (IEC62439 Part 3 Chapter 5)
0001 .... .... .... = Path: 1
000. .... .... .... = Network id: 0
...1 .... .... .... = Lane id: Lane B (1)
LSDU size: 52 [correct]
Sequence number: 6679
Type: ARP (0x0806)
Address Resolution Protocol (reply)
...
Wireshark

The HSR dissector is fully functional. Supervision frames have the same format as in the related Parallel Redundancy Protocol, so they share a common dissector. The HSR dissector only handles the actual HSR header.

Example capture file

SampleCaptures/HSR-simple-supervision-and-1vdan-appearing.pcap
External links

HSR Wikipedia article.
Discussion

quite a lot running processes

 2139 ?        Ss     0:00 /bin/sh -e /usr/sbin/lcd-manager --daemon
 2237 ?        Ss     0:00 /usr/sbin/fcmd -l /usr/lib/fcmd -f -d /etc/fcmd -r
 2243 ?        Ssl    0:00 /usr/sbin/interface_manager -f -m switching_module ip_module ether
 2251 ?        Ssl    0:00 /usr/sbin/xr7_monitor -f
 2258 ?        Rs    12:15 /usr/sbin/flx_redundancy_supervision -f
 2264 ?        Ss     0:00 /usr/sbin/xr7_fwud -f -p dpd.ctrl
 2270 ?        Ss     0:00 /usr/sbin/xr7ptp -f
 2280 ?        Ssl    0:00 /usr/sbin/host_clock_adj -f

fcm related programs

root@xr7:/etc/rc2.d# ldd /usr/bin/fcm_manager 
    libc.so.6 => /lib/arm-linux-gnueabi/libc.so.6 (0x76dbd000)
    /lib/ld-linux.so.3 (0x76ef9000)

root@xr7:/etc/rc2.d# ldd /usr/sbin/fcmd
    libfcmd.so.0 => /usr/lib/libfcmd.so.0 (0x76f26000)
    libxml2.so.2 => /usr/lib/arm-linux-gnueabi/libxml2.so.2 (0x76df4000)
    libc.so.6 => /lib/arm-linux-gnueabi/libc.so.6 (0x76cbd000)
    libxslt.so.1 => /usr/lib/arm-linux-gnueabi/libxslt.so.1 (0x76c7d000)
    librt.so.1 => /lib/arm-linux-gnueabi/librt.so.1 (0x76c6e000)
    libdl.so.2 => /lib/arm-linux-gnueabi/libdl.so.2 (0x76c63000)
    libz.so.1 => /lib/arm-linux-gnueabi/libz.so.1 (0x76c45000)
    liblzma.so.5 => /lib/arm-linux-gnueabi/liblzma.so.5 (0x76c1c000)
    libm.so.6 => /lib/arm-linux-gnueabi/libm.so.6 (0x76b73000)
    /lib/ld-linux.so.3 (0x76f4b000)
    libpthread.so.0 => /lib/arm-linux-gnueabi/libpthread.so.0 (0x76b53000)
    libgcc_s.so.1 => /lib/arm-linux-gnueabi/libgcc_s.so.1 (0x76b29000)

command arguments

root@xr7:/etc/rc2.d# fcm_manager -h
fcm_manager [-q] -h [-r <file>] [-n <node>] [-w <file>] -s
    -r  Send contents of <file>
    -n  Send to <node>
    -w  Write reply to <file>
    -s  Use SSL
    -q  Quiet (use first)
    -h  This help

root@xr7:/etc/rc2.d# fcmd -h
fcmd [-d <dir>] [-c <file>] [-h] -f
    -d <dir>    Use config dir <dir>
    -l <dir>    Use library dir <dir>
    -c <file>   fcmd config file
    -f      fork as daemon
    -r      validate also replies
    -h      This help
Signals
    USR1        Enable logging debug messages

config file and current config

root@xr7:/etc/rc2.d# ls /etc/fcmd/
XMLSchema.xsd              ip                 switching_module.xsd
catalog.xml            ip_module.xsd              sync
clk_config.xsd             managers.conf              sync_module.xsd
clk_config_order.xslt          netconf.xsd            sync_order.xslt
config_order.xslt          ptp_common.xsd             sync_status.xsd
ethernet               ptp_config.xsd             vlan
ethernet_module.xsd        ptp_config_order.xslt          vlan_config.xsd
flexibilis_common.xsd          redundancy_supervision         vlan_module.xsd
flexibilis_config.xsd          redundancy_supervision_module.xsd  xml.xsd
flexibilis_config_default.xsd  redundancy_supervision_status.xsd  xr7_fwud
flexibilis_config_order.xslt   routing                xr7_monitor
fwud_config.xsd            routing_module.xsd         xr7_monitor_module.xsd
fwud_module.xsd            switching              xr7_monitor_status.xsd
root@xr7:/etc/rc2.d# ls /etc/fcmd/switching/
candidate  factory  rollback  running  startup

ls -al /var/run/fcmd/     
total 0
drwxr-xr-x 10 root root 200 Jan  1 02:00 .
drwxr-xr-x 10 root root 400 Jan  1 02:00 ..
drwxr-xr-x  5 root root 100 Jan  1 02:00 ethernet
drwxr-xr-x  5 root root 100 Jan  1 02:00 ip
drwxr-xr-x  5 root root 100 Jan  1 02:00 redundancy_supervision
drwxr-xr-x  5 root root 100 Jan  1 02:00 routing
drwxr-xr-x  5 root root 100 Jan  1 02:00 switching
drwxr-xr-x  5 root root 100 Jan  1 02:00 sync
drwxr-xr-x  5 root root 100 Jan  1 02:00 vlan
drwxr-xr-x  5 root root 100 Jan  1 02:00 xr7_fwud

start up scripts

root@xr7:/etc/rc2.d# ls
README       S02cron         S03xr7-system   S80fcmd            S99xr7-boot-finished
S01bootlogs  S02virtual-xr7  S04lcd-manager  S82xr7ptp
S01motd      S03rc.local     S16ssh      S85flx-host-clock-adj
S01rsyslog   S03rmnologin    S75sudo         S92tomcat7

quite a lot sockets

root@xr7:/etc/init.d# netstat --all --program        
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 localhost:5454          *:*                     LISTEN      2237/fcmd       
tcp        0      0 *:ssh                   *:*                     LISTEN      2160/sshd       
tcp        0      0 localhost:8005          *:*                     LISTEN      2313/java       
tcp        0      0 192.168.7.2:ssh         192.168.7.111:57801     ESTABLISHED 2514/0          
tcp        0      0 localhost:5454          localhost:39742         ESTABLISHED 2237/fcmd       
tcp        0      0 localhost:39742         localhost:5454          ESTABLISHED 2313/java       
tcp6       0      0 [::]:http               [::]:*                  LISTEN      2313/java       
tcp6       0      0 [::]:ssh                [::]:*                  LISTEN      2160/sshd       
tcp6       0      0 [::]:https              [::]:*                  LISTEN      2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58201         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58179         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58180         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58178         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58198         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58166         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58200         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58202         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58190         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58181         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58199         ESTABLISHED 2313/java       
udp        0      0 *:319                   *:*                                 2270/xr7ptp     
udp        0      0 *:320                   *:*                                 2270/xr7ptp

check linux domain socket

Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node   PID/Program name    Path
unix  7      [ ]         DGRAM                    806      1976/rsyslogd       /dev/log
unix  2      [ ACC ]     SEQPACKET  LISTENING     3749     2237/fcmd           @fcm_socket
unix  2      [ ACC ]     SEQPACKET  LISTENING     244      660/udevd           /run/udev/control
unix  3      [ ]         SEQPACKET  CONNECTED     3851     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     4275     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     3848     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     3831     2243/interface_mana 
unix  3      [ ]         DGRAM                    2966     660/udevd           
unix  3      [ ]         SEQPACKET  CONNECTED     4273     2264/xr7_fwud       
unix  2      [ ]         DGRAM                    4257     2251/xr7_monitor    
unix  3      [ ]         SEQPACKET  CONNECTED     3885     2270/xr7ptp         
unix  3      [ ]         SEQPACKET  CONNECTED     3832     2237/fcmd           @fcm_socket
unix  3      [ ]         DGRAM                    2965     660/udevd           
unix  3      [ ]         SEQPACKET  CONNECTED     4274     2264/xr7_fwud       
unix  3      [ ]         SEQPACKET  CONNECTED     3843     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     3856     2237/fcmd           @fcm_socket
unix  2      [ ]         DGRAM                    3894     2258/flx_redundancy 
unix  3      [ ]         SEQPACKET  CONNECTED     4272     2264/xr7_fwud       
unix  3      [ ]         SEQPACKET  CONNECTED     4285     2237/fcmd           @fcm_socket
unix  2      [ ]         DGRAM                    3952     2514/0              
unix  2      [ ]         DGRAM                    4312     2270/xr7ptp         
unix  3      [ ]         SEQPACKET  CONNECTED     3842     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     4252     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     3867     2258/flx_redundancy 
unix  3      [ ]         SEQPACKET  CONNECTED     3852     2237/fcmd           @fcm_socket
unix  2      [ ]         DGRAM                    3830     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     4259     2251/xr7_monitor    
unix  3      [ ]         SEQPACKET  CONNECTED     3847     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     3864     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     4268     2237/fcmd           @fcm_soc

total files

root@xr7:~# ls /proc/driver/flx_frs/
device00_adapter_registers  device00_ipo_registers   device00_vlan_config_registers
device00_common_registers   device00_port_registers  statistic_device00
root@xr7:~# ls /proc/driver/flx_time/
component_00_registers

/proc/driver/flx_frs/device00_adapter_registers

Adapter registers of device 0      (REG):   PORT0   PORT1   PORT2   PORT3

ID              (0x0000):   0x0000  0x01b2  0x01b2  0x01b2
Link status         (0x0001):   0x4000  0x0001  0x0000  0x0001
GMII transmit clock     (0x0002):     -       -       -       -   
PCS control         (0x0020):     -     0x1140  0x1140  0x1140
PCS status          (0x0021):     -     0x00ad  0x0089  0x00ad
PCS dev_ability         (0x0024):     -     0x4020  0x0020  0x4020
PCS partner_ability     (0x0025):     -     0x4020  0x0000  0x4020
PCS if_mode         (0x0034):     -     0x0000  0x0000  0x0000

/proc/driver/flx_frs/device00_common_registers

Common Registers of device 0:
FRS ID0             (0x0000): 0x0000
FRS ID1             (0x0001): 0x4000
FRS configuration ID        (0x0002):    206
FRS configuration SVN ID    (0x0003):  38661
FRS body SVN version        (0x0004):  38631
FRS General         (0x0008): 0x1602
FRS FRS_REG_CMEM_FILL_LEVEL (0x000a):      0
FRS FRS_REG_DMEM_FILL_LEVEL (0x000b):    119
FRS FRS_REG_SEQ_MEM_FILL_LEVEL  (0x000c):    248
FRS FRS_REG_SEQ_MEM_DEALLOC_ERR (0x000c):      0
FRS Aging           (0x0010): 0x0103
FRS AGING_BASE_TIME_LO      (0x0011): 0xa11f
FRS AGING_BASE_TIME_HI      (0x0012): 0x0007
FRS_REG_AUTH_STATUS     (0x0013): 0x006f
FRS_REG_TS_CTRL_TX      (0x0014): 0x0000
FRS_REG_TS_CTRL_RX      (0x0015): 0x000f
FRS_REG_INTMASK         (0x0016): 0x0003
FRS_REG_INTSTAT         (0x0017): 0x0000

FRS_TX_TS_0 [s ns]   (0x1002 0x1000): 0x00000000 0x00000000
FRS_TX_TS_1 [s ns]   (0x1042 0x1040): 0x00000000 0x00000000
FRS_TX_TS_2 [s ns]   (0x1082 0x1080): 0x00000000 0x00000000
FRS_TX_TS_3 [s ns]   (0x10c2 0x10c0): 0x00000000 0x00000000

FRS_RX_TS_0 [s ns]   (0x1102 0x1100): 0x000001ba 0x04ddcb30
FRS_RX_TS_1 [s ns]   (0x1142 0x1140): 0x000001ba 0x15191018
FRS_RX_TS_2 [s ns]   (0x1182 0x1180): 0x000001b9 0x3567e880
FRS_RX_TS_3 [s ns]   (0x11c2 0x11c0): 0x000001ba 0x04ca1068

/proc/driver/flx_frs/device00_ipo_registers

IPO registers of device 0   (REG):      PORT0   PORT1   PORT2   PORT3

ETH_ADDR_CFG( 0)        (0x4000):   0x00c1  0x00c1  0x00c1  0x00c1
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4001):   0x0006  0x0007  0x0007  0x0000
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4002):   0x0000  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_0     (0x4004):   0x1501  0x1501  0x1501  0x1501
PORT_REG_ETH_ADDR_1     (0x4005):   0x004e  0x004e  0x004e  0x004e
PORT_REG_ETH_ADDR_2     (0x4006):   0x0001  0x0001  0x0001  0x0001

ETH_ADDR_CFG( 1)        (0x4010):   0x0000  0x20c1  0x20c1  0x20c1
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4011):   0x0000  0xffff  0xffff  0xffff
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4012):   0x0000  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_0     (0x4014):   0x0000  0x1b01  0x1b01  0x1b01
PORT_REG_ETH_ADDR_1     (0x4015):   0x0000  0x0019  0x0019  0x0019
PORT_REG_ETH_ADDR_2     (0x4016):   0x0000  0x0000  0x0000  0x0000

ETH_ADDR_CFG( 2)        (0x4020):   0x0cc1  0x00c1  0x00c1  0x00c1
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4021):   0xffff  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4022):   0x0000  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_0     (0x4024):   0x8001  0x8001  0x8001  0x8001
PORT_REG_ETH_ADDR_1     (0x4025):   0x00c2  0x00c2  0x00c2  0x00c2
PORT_REG_ETH_ADDR_2     (0x4026):   0x0e00  0x0e00  0x0e00  0x0e00

ETH_ADDR_CFG( 3)        (0x4030):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4031):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4032):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_0     (0x4034):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_1     (0x4035):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_2     (0x4036):   0x0000  0x0000  0x0000  0x0000

port registers

/proc/driver/flx_frs/device00_port_registers

Port registers of device 0     (REG):   PORT0   PORT1   PORT2   PORT3

State               (0x0000):   0x0204  0x0120  0x0002  0x0120
VLAN                (0x0008):   0x8fff  0x8fff  0x8fff  0x8fff
VLAN0_MAP           (0x0009):   0x0000  0x0000  0x0000  0x0000
FWD_PORT_MASK           (0x000a):   0x0000  0x0000  0x0000  0x0000
VLAN_PRIO           (0x000b):   0xfa50  0xfa50  0xfa50  0xfa50
HSR_PORT_CFG            (0x1000):   0x0000  0x0001  0x0401  0x0000
PORT_REG_PTP_DELAY_SN       (0x2000):   0x0000  0x0000  0x0000  0x0000
PORT_REG_PTP_DELAY_NSL      (0x2001):   0x0000  0x01c9  0x0000  0x0000
PORT_REG_PTP_DELAY_NSH      (0x2002):   0x0000  0x0000  0x0000  0x0000

/proc/driver/flx_frs/device00_vlan_config_registers

VLAN config Registers of device 0:
FRS VLAN(0) (0x2000): 0x000f
FRS VLAN(1) (0x2001): 0x000f
FRS VLAN(2) (0x2002): 0x000f
FRS VLAN(3) (0x2003): 0x000f
FRS VLAN(4) (0x2004): 0x000f
FRS VLAN(5) (0x2005): 0x000f
FRS VLAN(6) (0x2006): 0x000f
FRS VLAN(7) (0x2007): 0x000f
FRS VLAN(8) (0x2008): 0x000f
FRS VLAN(9) (0x2009): 0x000f
FRS VLAN(10)    (0x200a): 0x000f
FRS VLAN(11)    (0x200b): 0x000f

/proc/driver/flx_frs/statistic_device00

Statistic of device 0:
RX tstamp:  0x0000079a
TX tstamp:  0x00000000
RX error:   0x00000000
Congested:  0x00000000

Port statistics                (REG):        PORT0       PORT1       PORT2       PORT3

RX good octets          (0x3100):   0x00000077  0x00000158  0x00000000  0x00000000
RX bad octets           (0x3102):   0x00000000  0x00000000  0x00000000  0x00000000
RX unicast frames       (0x3104):   0x00000001  0x00000002  0x00000000  0x00000000
RX broadcast frames     (0x3106):   0x00000000  0x00000000  0x00000000  0x00000000
RX multicast frames     (0x3108):   0x00000000  0x00000002  0x00000000  0x00000000
RX undersize frames     (0x310a):   0x00000000  0x00000000  0x00000000  0x00000000
RX fragment frames      (0x310c):   0x00000000  0x00000000  0x00000000  0x00000000
RX oversize frames      (0x310e):   0x00000000  0x00000000  0x00000000  0x00000000
RX error frames         (0x3112):   0x00000000  0x00000000  0x00000000  0x00000000
RX CRC error frames     (0x3114):   0x00000000  0x00000000  0x00000000  0x00000000

RX good HSR/PRP frames      (0x3122):   0x00000000  0x00000002  0x00000000  0x00000000
RX PRP wrong LAN frames     (0x3124):   0x00000000  0x00000000  0x00000000  0x00000000
RX HSR/PRP duplicate drop   (0x3126):   0x00000000  0x00000000  0x00000000  0x00000000

TX octets           (0x3140):   0x000000be  0x000000c4  0x00000000  0x00000000
TX unicast frames       (0x3142):   0x00000002  0x00000001  0x00000000  0x00000000
TX broadcast frames     (0x3144):   0x00000000  0x00000000  0x00000000  0x00000000
TX multicast frames     (0x3146):   0x00000000  0x00000001  0x00000000  0x00000000

TX HSR/PRP frames       (0x3148):   0x00000000  0x00000001  0x00000000  0x00000000

TX priority queue full drop (0x3160):   0x00000000  0x00000000  0x00000000  0x00000000

protocol stack

Machine Learning & Neural Network

http://colah.github.io/
https://iamtrask.github.io/
http://www.slideshare.net/tw_dsconf/ss-62245351
great point to start with

UCI, LUCI, WEB

better get familiar with uci before luci
http://wiki.openwrt.org/doc/techref/uci

the following items should be covered

GO-UCI -- Go bindings of libuci. APIs should be like luci model APIs
jUCI -- uci structure <-> json conversion.
rest-UCI -- web apis for UCI making UCI rewrite as web service. general UCI read/write would be represented in REST sematics.

govreport hsrprot

Study the Protocol
High-availability Seamless Redundancy Protocol (HSR)

Example traffic

Example capture file

SampleCaptures/HSR-simple-supervision-and-1vdan-appearing.pcap
External links

HSR Wikipedia article.
Discussion

quite a lot running processes

 2139 ?        Ss     0:00 /bin/sh -e /usr/sbin/lcd-manager --daemon
 2237 ?        Ss     0:00 /usr/sbin/fcmd -l /usr/lib/fcmd -f -d /etc/fcmd -r
 2243 ?        Ssl    0:00 /usr/sbin/interface_manager -f -m switching_module ip_module ether
 2251 ?        Ssl    0:00 /usr/sbin/xr7_monitor -f
 2258 ?        Rs    12:15 /usr/sbin/flx_redundancy_supervision -f
 2264 ?        Ss     0:00 /usr/sbin/xr7_fwud -f -p dpd.ctrl
 2270 ?        Ss     0:00 /usr/sbin/xr7ptp -f
 2280 ?        Ssl    0:00 /usr/sbin/host_clock_adj -f

fcm related programs

root@xr7:/etc/rc2.d# ldd /usr/bin/fcm_manager 
    libc.so.6 => /lib/arm-linux-gnueabi/libc.so.6 (0x76dbd000)
    /lib/ld-linux.so.3 (0x76ef9000)

root@xr7:/etc/rc2.d# ldd /usr/sbin/fcmd
    libfcmd.so.0 => /usr/lib/libfcmd.so.0 (0x76f26000)
    libxml2.so.2 => /usr/lib/arm-linux-gnueabi/libxml2.so.2 (0x76df4000)
    libc.so.6 => /lib/arm-linux-gnueabi/libc.so.6 (0x76cbd000)
    libxslt.so.1 => /usr/lib/arm-linux-gnueabi/libxslt.so.1 (0x76c7d000)
    librt.so.1 => /lib/arm-linux-gnueabi/librt.so.1 (0x76c6e000)
    libdl.so.2 => /lib/arm-linux-gnueabi/libdl.so.2 (0x76c63000)
    libz.so.1 => /lib/arm-linux-gnueabi/libz.so.1 (0x76c45000)
    liblzma.so.5 => /lib/arm-linux-gnueabi/liblzma.so.5 (0x76c1c000)
    libm.so.6 => /lib/arm-linux-gnueabi/libm.so.6 (0x76b73000)
    /lib/ld-linux.so.3 (0x76f4b000)
    libpthread.so.0 => /lib/arm-linux-gnueabi/libpthread.so.0 (0x76b53000)
    libgcc_s.so.1 => /lib/arm-linux-gnueabi/libgcc_s.so.1 (0x76b29000)

command arguments

root@xr7:/etc/rc2.d# fcm_manager -h
fcm_manager [-q] -h [-r <file>] [-n <node>] [-w <file>] -s
    -r  Send contents of <file>
    -n  Send to <node>
    -w  Write reply to <file>
    -s  Use SSL
    -q  Quiet (use first)
    -h  This help

root@xr7:/etc/rc2.d# fcmd -h
fcmd [-d <dir>] [-c <file>] [-h] -f
    -d <dir>    Use config dir <dir>
    -l <dir>    Use library dir <dir>
    -c <file>   fcmd config file
    -f      fork as daemon
    -r      validate also replies
    -h      This help
Signals
    USR1        Enable logging debug messages

config file and current config

root@xr7:/etc/rc2.d# ls /etc/fcmd/
XMLSchema.xsd              ip                 switching_module.xsd
catalog.xml            ip_module.xsd              sync
clk_config.xsd             managers.conf              sync_module.xsd
clk_config_order.xslt          netconf.xsd            sync_order.xslt
config_order.xslt          ptp_common.xsd             sync_status.xsd
ethernet               ptp_config.xsd             vlan
ethernet_module.xsd        ptp_config_order.xslt          vlan_config.xsd
flexibilis_common.xsd          redundancy_supervision         vlan_module.xsd
flexibilis_config.xsd          redundancy_supervision_module.xsd  xml.xsd
flexibilis_config_default.xsd  redundancy_supervision_status.xsd  xr7_fwud
flexibilis_config_order.xslt   routing                xr7_monitor
fwud_config.xsd            routing_module.xsd         xr7_monitor_module.xsd
fwud_module.xsd            switching              xr7_monitor_status.xsd
root@xr7:/etc/rc2.d# ls /etc/fcmd/switching/
candidate  factory  rollback  running  startup

ls -al /var/run/fcmd/     
total 0
drwxr-xr-x 10 root root 200 Jan  1 02:00 .
drwxr-xr-x 10 root root 400 Jan  1 02:00 ..
drwxr-xr-x  5 root root 100 Jan  1 02:00 ethernet
drwxr-xr-x  5 root root 100 Jan  1 02:00 ip
drwxr-xr-x  5 root root 100 Jan  1 02:00 redundancy_supervision
drwxr-xr-x  5 root root 100 Jan  1 02:00 routing
drwxr-xr-x  5 root root 100 Jan  1 02:00 switching
drwxr-xr-x  5 root root 100 Jan  1 02:00 sync
drwxr-xr-x  5 root root 100 Jan  1 02:00 vlan
drwxr-xr-x  5 root root 100 Jan  1 02:00 xr7_fwud

start up scripts

root@xr7:/etc/rc2.d# ls
README       S02cron         S03xr7-system   S80fcmd            S99xr7-boot-finished
S01bootlogs  S02virtual-xr7  S04lcd-manager  S82xr7ptp
S01motd      S03rc.local     S16ssh      S85flx-host-clock-adj
S01rsyslog   S03rmnologin    S75sudo         S92tomcat7

quite a lot sockets

root@xr7:/etc/init.d# netstat --all --program        
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 localhost:5454          *:*                     LISTEN      2237/fcmd       
tcp        0      0 *:ssh                   *:*                     LISTEN      2160/sshd       
tcp        0      0 localhost:8005          *:*                     LISTEN      2313/java       
tcp        0      0 192.168.7.2:ssh         192.168.7.111:57801     ESTABLISHED 2514/0          
tcp        0      0 localhost:5454          localhost:39742         ESTABLISHED 2237/fcmd       
tcp        0      0 localhost:39742         localhost:5454          ESTABLISHED 2313/java       
tcp6       0      0 [::]:http               [::]:*                  LISTEN      2313/java       
tcp6       0      0 [::]:ssh                [::]:*                  LISTEN      2160/sshd       
tcp6       0      0 [::]:https              [::]:*                  LISTEN      2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58201         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58179         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58180         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58178         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58198         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58166         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58200         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58202         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58190         ESTABLISHED 2313/java       
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58181         TIME_WAIT   -               
getnameinfo failed
getnameinfo failed
tcp6       0      0 [UNKNOWN]:https         [UNKNOWN]:58199         ESTABLISHED 2313/java       
udp        0      0 *:319                   *:*                                 2270/xr7ptp     
udp        0      0 *:320                   *:*                                 2270/xr7ptp

check linux domain socket

Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node   PID/Program name    Path
unix  7      [ ]         DGRAM                    806      1976/rsyslogd       /dev/log
unix  2      [ ACC ]     SEQPACKET  LISTENING     3749     2237/fcmd           @fcm_socket
unix  2      [ ACC ]     SEQPACKET  LISTENING     244      660/udevd           /run/udev/control
unix  3      [ ]         SEQPACKET  CONNECTED     3851     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     4275     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     3848     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     3831     2243/interface_mana 
unix  3      [ ]         DGRAM                    2966     660/udevd           
unix  3      [ ]         SEQPACKET  CONNECTED     4273     2264/xr7_fwud       
unix  2      [ ]         DGRAM                    4257     2251/xr7_monitor    
unix  3      [ ]         SEQPACKET  CONNECTED     3885     2270/xr7ptp         
unix  3      [ ]         SEQPACKET  CONNECTED     3832     2237/fcmd           @fcm_socket
unix  3      [ ]         DGRAM                    2965     660/udevd           
unix  3      [ ]         SEQPACKET  CONNECTED     4274     2264/xr7_fwud       
unix  3      [ ]         SEQPACKET  CONNECTED     3843     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     3856     2237/fcmd           @fcm_socket
unix  2      [ ]         DGRAM                    3894     2258/flx_redundancy 
unix  3      [ ]         SEQPACKET  CONNECTED     4272     2264/xr7_fwud       
unix  3      [ ]         SEQPACKET  CONNECTED     4285     2237/fcmd           @fcm_socket
unix  2      [ ]         DGRAM                    3952     2514/0              
unix  2      [ ]         DGRAM                    4312     2270/xr7ptp         
unix  3      [ ]         SEQPACKET  CONNECTED     3842     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     4252     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     3867     2258/flx_redundancy 
unix  3      [ ]         SEQPACKET  CONNECTED     3852     2237/fcmd           @fcm_socket
unix  2      [ ]         DGRAM                    3830     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     4259     2251/xr7_monitor    
unix  3      [ ]         SEQPACKET  CONNECTED     3847     2243/interface_mana 
unix  3      [ ]         SEQPACKET  CONNECTED     3864     2237/fcmd           @fcm_socket
unix  3      [ ]         SEQPACKET  CONNECTED     4268     2237/fcmd           @fcm_soc

total files

root@xr7:~# ls /proc/driver/flx_frs/
device00_adapter_registers  device00_ipo_registers   device00_vlan_config_registers
device00_common_registers   device00_port_registers  statistic_device00
root@xr7:~# ls /proc/driver/flx_time/
component_00_registers

/proc/driver/flx_frs/device00_adapter_registers

Adapter registers of device 0      (REG):   PORT0   PORT1   PORT2   PORT3

ID              (0x0000):   0x0000  0x01b2  0x01b2  0x01b2
Link status         (0x0001):   0x4000  0x0001  0x0000  0x0001
GMII transmit clock     (0x0002):     -       -       -       -   
PCS control         (0x0020):     -     0x1140  0x1140  0x1140
PCS status          (0x0021):     -     0x00ad  0x0089  0x00ad
PCS dev_ability         (0x0024):     -     0x4020  0x0020  0x4020
PCS partner_ability     (0x0025):     -     0x4020  0x0000  0x4020
PCS if_mode         (0x0034):     -     0x0000  0x0000  0x0000

/proc/driver/flx_frs/device00_common_registers

Common Registers of device 0:
FRS ID0             (0x0000): 0x0000
FRS ID1             (0x0001): 0x4000
FRS configuration ID        (0x0002):    206
FRS configuration SVN ID    (0x0003):  38661
FRS body SVN version        (0x0004):  38631
FRS General         (0x0008): 0x1602
FRS FRS_REG_CMEM_FILL_LEVEL (0x000a):      0
FRS FRS_REG_DMEM_FILL_LEVEL (0x000b):    119
FRS FRS_REG_SEQ_MEM_FILL_LEVEL  (0x000c):    248
FRS FRS_REG_SEQ_MEM_DEALLOC_ERR (0x000c):      0
FRS Aging           (0x0010): 0x0103
FRS AGING_BASE_TIME_LO      (0x0011): 0xa11f
FRS AGING_BASE_TIME_HI      (0x0012): 0x0007
FRS_REG_AUTH_STATUS     (0x0013): 0x006f
FRS_REG_TS_CTRL_TX      (0x0014): 0x0000
FRS_REG_TS_CTRL_RX      (0x0015): 0x000f
FRS_REG_INTMASK         (0x0016): 0x0003
FRS_REG_INTSTAT         (0x0017): 0x0000

FRS_TX_TS_0 [s ns]   (0x1002 0x1000): 0x00000000 0x00000000
FRS_TX_TS_1 [s ns]   (0x1042 0x1040): 0x00000000 0x00000000
FRS_TX_TS_2 [s ns]   (0x1082 0x1080): 0x00000000 0x00000000
FRS_TX_TS_3 [s ns]   (0x10c2 0x10c0): 0x00000000 0x00000000

FRS_RX_TS_0 [s ns]   (0x1102 0x1100): 0x000001ba 0x04ddcb30
FRS_RX_TS_1 [s ns]   (0x1142 0x1140): 0x000001ba 0x15191018
FRS_RX_TS_2 [s ns]   (0x1182 0x1180): 0x000001b9 0x3567e880
FRS_RX_TS_3 [s ns]   (0x11c2 0x11c0): 0x000001ba 0x04ca1068

/proc/driver/flx_frs/device00_ipo_registers

IPO registers of device 0   (REG):      PORT0   PORT1   PORT2   PORT3

ETH_ADDR_CFG( 0)        (0x4000):   0x00c1  0x00c1  0x00c1  0x00c1
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4001):   0x0006  0x0007  0x0007  0x0000
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4002):   0x0000  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_0     (0x4004):   0x1501  0x1501  0x1501  0x1501
PORT_REG_ETH_ADDR_1     (0x4005):   0x004e  0x004e  0x004e  0x004e
PORT_REG_ETH_ADDR_2     (0x4006):   0x0001  0x0001  0x0001  0x0001

ETH_ADDR_CFG( 1)        (0x4010):   0x0000  0x20c1  0x20c1  0x20c1
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4011):   0x0000  0xffff  0xffff  0xffff
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4012):   0x0000  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_0     (0x4014):   0x0000  0x1b01  0x1b01  0x1b01
PORT_REG_ETH_ADDR_1     (0x4015):   0x0000  0x0019  0x0019  0x0019
PORT_REG_ETH_ADDR_2     (0x4016):   0x0000  0x0000  0x0000  0x0000

ETH_ADDR_CFG( 2)        (0x4020):   0x0cc1  0x00c1  0x00c1  0x00c1
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4021):   0xffff  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4022):   0x0000  0x0001  0x0001  0x0001
PORT_REG_ETH_ADDR_0     (0x4024):   0x8001  0x8001  0x8001  0x8001
PORT_REG_ETH_ADDR_1     (0x4025):   0x00c2  0x00c2  0x00c2  0x00c2
PORT_REG_ETH_ADDR_2     (0x4026):   0x0e00  0x0e00  0x0e00  0x0e00

ETH_ADDR_CFG( 3)        (0x4030):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_FWD_ALLOW (0x4031):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_FWD_MIRROR    (0x4032):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_0     (0x4034):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_1     (0x4035):   0x0000  0x0000  0x0000  0x0000
PORT_REG_ETH_ADDR_2     (0x4036):   0x0000  0x0000  0x0000  0x0000

port registers

/proc/driver/flx_frs/device00_port_registers

Port registers of device 0     (REG):   PORT0   PORT1   PORT2   PORT3

State               (0x0000):   0x0204  0x0120  0x0002  0x0120
VLAN                (0x0008):   0x8fff  0x8fff  0x8fff  0x8fff
VLAN0_MAP           (0x0009):   0x0000  0x0000  0x0000  0x0000
FWD_PORT_MASK           (0x000a):   0x0000  0x0000  0x0000  0x0000
VLAN_PRIO           (0x000b):   0xfa50  0xfa50  0xfa50  0xfa50
HSR_PORT_CFG            (0x1000):   0x0000  0x0001  0x0401  0x0000
PORT_REG_PTP_DELAY_SN       (0x2000):   0x0000  0x0000  0x0000  0x0000
PORT_REG_PTP_DELAY_NSL      (0x2001):   0x0000  0x01c9  0x0000  0x0000
PORT_REG_PTP_DELAY_NSH      (0x2002):   0x0000  0x0000  0x0000  0x0000

/proc/driver/flx_frs/device00_vlan_config_registers

VLAN config Registers of device 0:
FRS VLAN(0) (0x2000): 0x000f
FRS VLAN(1) (0x2001): 0x000f
FRS VLAN(2) (0x2002): 0x000f
FRS VLAN(3) (0x2003): 0x000f
FRS VLAN(4) (0x2004): 0x000f
FRS VLAN(5) (0x2005): 0x000f
FRS VLAN(6) (0x2006): 0x000f
FRS VLAN(7) (0x2007): 0x000f
FRS VLAN(8) (0x2008): 0x000f
FRS VLAN(9) (0x2009): 0x000f
FRS VLAN(10)    (0x200a): 0x000f
FRS VLAN(11)    (0x200b): 0x000f

/proc/driver/flx_frs/statistic_device00

Statistic of device 0:
RX tstamp:  0x0000079a
TX tstamp:  0x00000000
RX error:   0x00000000
Congested:  0x00000000

Port statistics                (REG):        PORT0       PORT1       PORT2       PORT3

RX good octets          (0x3100):   0x00000077  0x00000158  0x00000000  0x00000000
RX bad octets           (0x3102):   0x00000000  0x00000000  0x00000000  0x00000000
RX unicast frames       (0x3104):   0x00000001  0x00000002  0x00000000  0x00000000
RX broadcast frames     (0x3106):   0x00000000  0x00000000  0x00000000  0x00000000
RX multicast frames     (0x3108):   0x00000000  0x00000002  0x00000000  0x00000000
RX undersize frames     (0x310a):   0x00000000  0x00000000  0x00000000  0x00000000
RX fragment frames      (0x310c):   0x00000000  0x00000000  0x00000000  0x00000000
RX oversize frames      (0x310e):   0x00000000  0x00000000  0x00000000  0x00000000
RX error frames         (0x3112):   0x00000000  0x00000000  0x00000000  0x00000000
RX CRC error frames     (0x3114):   0x00000000  0x00000000  0x00000000  0x00000000

RX good HSR/PRP frames      (0x3122):   0x00000000  0x00000002  0x00000000  0x00000000
RX PRP wrong LAN frames     (0x3124):   0x00000000  0x00000000  0x00000000  0x00000000
RX HSR/PRP duplicate drop   (0x3126):   0x00000000  0x00000000  0x00000000  0x00000000

TX octets           (0x3140):   0x000000be  0x000000c4  0x00000000  0x00000000
TX unicast frames       (0x3142):   0x00000002  0x00000001  0x00000000  0x00000000
TX broadcast frames     (0x3144):   0x00000000  0x00000000  0x00000000  0x00000000
TX multicast frames     (0x3146):   0x00000000  0x00000001  0x00000000  0x00000000

TX HSR/PRP frames       (0x3148):   0x00000000  0x00000001  0x00000000  0x00000000

TX priority queue full drop (0x3160):   0x00000000  0x00000000  0x00000000  0x00000000

protocol stack

functionality

IoT cloud related

https://yaler.net/ good point, good picture
how to choose protocol http://wamp.ws/compared/
wamp-proto/wamp-proto#7 (comment)

STM32

for cortex m3(ex. f107), specify the core speed as 72 instead of 168
http://armcortexm.blogs.upv.es/stm32f4-discovery-and-printf-redirection-to-debug-viewer-in-keil/
Add the following code to make printf work

#include <stdio.h>
#include "main.h"

int fputc(int ch, FILE *f)
{
  ITM_SendChar(ch); 
  return ch;
}

gitlab and CI

gitlab

documents: http://doc.gitlab.com/ce/
oauth github for migration
- user association with github git history
an new user should
basic concepts: member, group, project, menu convention

gitlab in docker

1G memory required. DigitalOcean $10/mo not enough memory. Add swap.

fallocate -l 4G /swapfile
mkswap /swapfile
swapon /swapfile
echo "/swapfile   none    swap    sw    0   0" >> /etc/fstab
free -m

follow steps here. Now it's 8.5.1.
master docker-compose
- up -d and down
docker-compose.yml
docker-compose logs
mail by mailgun. Creating new mail account gitadmin without google.
caddy for virtual hosting
backup directory

gitlab-ci

documents: http://doc.gitlab.com/ce/ci/
runner on host
gitlab-ci.yml syntax: http://doc.gitlab.com/ce/ci/yaml/README.html
cache
example project
the thoughts behind gitlab-ci is really worth to read

english writting

http://www.netspeak.org
http://linggle.com/

es6/es7/typescript

using async/awaint in babel: http://masnun.com/2015/11/11/using-es7-asyncawait-today-with-babel.html
syntax highlight https://github.com/othree/es.next.syntax.vim

" for ES6
Plugin 'othree/yajs.vim'
" for ES7
Plugin 'othree/es.next.syntax.vim'

typescript 1.7 also supports async/await
http://blogs.msdn.com/b/typescript/archive/2015/11/30/announcing-typescript-1-7.aspx

hsr supervision html5 report

the-graph study

continue the notes here https://gist.github.com/changtimwu/0b8f9d5547ac0a2ccaeb

having the concept of node template & node instance
save map
bidirectional links

ngrok

to install 2.0 on OSX

brew cask install ngrok

high performance network

We make use of PF_RING in product and surveyed netmap.
comparison

New studies are why-do-we-use-the-linux-kernels-tcp-stack. Then snabb draw my eye.

Intel dual 10G adaptor is about 10000 NTD.

smartadmin

https://wrapbootstrap.com/theme/smartadmin-responsive-webapp-WB0573SK0

Tasks:

server

client

hosting

~~firebase~~ always fail when too many files

Ethereum

Quick summary: What is Swarm and what is it used for?
Study Guide by CCL
Ethereum forum Chinese

WLAN upgrade trace

run golang executables on a uclibc/musl based linux system like openwrt

http://blog.hashbangbash.com/2014/04/linking-golang-statically/
It says a go executable is always static linked except cgo.

swixwebtogo notes

cli to go: https://gist.github.com/changtimwu/baab0ee584f924542861
togo plan: https://gist.github.com/changtimwu/5ecf33e7f60b63e48ae5
nodejs to go: https://gist.github.com/changtimwu/6b7de299655a33ddd4ee
RPC jobs: https://gist.github.com/changtimwu/972e1a5a6056267763bb
RPC study: https://gist.github.com/changtimwu/0f8fbe78e9a11dbec464

AlphaGo

koajs

koa source code 很短,

用 app.use 註冊進去的 middleware 都會記錄到 middleware array, ref1, ref2
middleware 必須是一個 generator
middleware invoke: 主要用到 koa-compose & co, ref
co 有個神奇效果, 把 callback function 直接變成用類似block function的觀念來運作
- 轉換出來的 function, 每次 call 前面要加 yield, 原理就是 yield 會先 return 到上層, 上層會看真的 callback 結束後 resume 進來繼續執行, 所以用的人感覺好像自動會block住有結果才 return

Linux VPN

site to site testbed with docker
simulating a NAT router and behind stations
https://blog.jessfraz.com/post/ips-for-all-the-things/

you better container with the --privileged option
https://groups.google.com/forum/#!topic/docker-user/gFHoaKpr7no

It would be like

docker run -i -t --net iptastic --ip 192.168.18.22  --privileged --rm alpine /bin/sh

manage build envs with docker

https://eng.erisindustries.com/tutorials/2015/06/17/docker-persistence/
#12

This works but i'd like to launch a xterm or x-desktop first.

FROM ubuntu:14.04

RUN apt-get update && apt-get install -y firefox

# Replace 1000 with your user / group id
RUN export uid=1000 gid=1000 && \
    mkdir -p /home/developer && \
    echo "developer:x:${uid}:${gid}:Developer,,,:/home/developer:/bin/bash" >> /etc/passwd && \
    echo "developer:x:${uid}:" >> /etc/group && \
    echo "developer ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/developer && \
    chmod 0440 /etc/sudoers.d/developer && \
    chown ${uid}:${gid} -R /home/developer

USER developer
ENV HOME /home/developer
CMD /usr/bin/firefox

 socat TCP-LISTEN:6000,reuseaddr,fork UNIX-CLIENT:\"$DISPLAY\"

docker run -it --rm  -e DISPLAY=192.168.59.3:0 firefox

most interactive

docker run -it -e DISPLAY=192.168.59.3 firefox /bin/bash

social identity integration

auth0.com

create a CLI server

common way

CLI is a standalone terminal program. It communicates main program with IPC and manipulate the terminal( arrow key, tab key) by itself.
Running an instance(process) of CLI program is necessary to create a CLI session.
That means every client is coming with a well-prepared terminal before launching the CLI program.

I want

Implement CLI as a standard network server(tcp or unixsocket). Each client is a connection.

All terminal logic ( history, completion, hotkey) are handled at server side.
quagga's vtysh is similar .

Pros:

network centric
CLI can be built with main program(no IPC overhead)
no process/tty overhead at client side

Cons:

don't know how to handle terminal I/O at server side. Few examples show how to redirect libreadline to a network fd.

z80 related

setjmp/longjmp/malloc works

maybe we have co-routine even channel?

https://github.com/danluu/setjmp-longjmp-ucontext-snippets

docker/kubernetes notes

--rm 可以讓 container exits 後就 rm 掉

docker run -it  busybox --rm

exec 可以在現有container 執行程式

docker exec -it <container id> bash

本來在container 在background跑, 用 attach 把它移到foreground, 按 ^C 會導致 container stop

docker attach <container id>

detach hot-key: ctrl-p, ctrl-q, reference

show container 內的程式訊息

docker logs -f <container id>

看起來好像很好懂, 請注意細節當我們說 run 一個 container , 其實是 prepare 好一個 filesystem 並且 run 某個 fs 內的一支程式.

psql -h remote.host.com -U username mydb

psql command list

\l -- list all database
\connect <db> -- connect to a database
\dt -- list all tables in current databse
\di -- list all indexes in current databse
\d <table> -- describe a table
\d <index> -- describe an index
select all gmail users and sort by created_at

select * from users where email like '%@gmail.com' order by created_at;

http://massive-js.readthedocs.org/en/latest/quick_start/
要有 id 當 primary key 的table才能用 db.tablename 這種語法存取

multi-value field
http://stackoverflow.com/questions/7925050/is-there-a-multivalued-field-type-available-in-postgresql

http://developer.olery.com/blog/goodbye-mongodb-hello-postgresql/
http://it-ebooks.info/book/4879/

peridot notes

/* RMU Mode: R28.10:8=00 choose P0 for Peridot */
RW U1 P27 R28 H00C0   /* switch global registers, global control 2 */
/* R4.9:8=01(std DSA) Port0*/
RW U1 P0 R4 H017f     /* switch registers, port 0, port control */