capacitor barcode scan

If you npm install a Cordova/Capacitor plugin after npx cap add android then make sure you run npx cap update before running from Android Studio again.
If you make html, js, ts, css changes, run ionic build again and also run npx cap copy.
Or when in doubt, run npx cap sync as it does update+copy.

https://github.com/ionic-team/capacitor/issues/1213
https://stackoverflow.com/questions/23060038/cant-use-barcode-scanner-in-cordova-plugin-is-installed

1. init

npx @capacitor/cli create testbarcode
npx cap add android
npx cap sync
npx cap copy
npx cap open android

ctrl+c exit

2. npm i phonegap-plugin-barcodescanner

npm i phonegap-plugin-barcodescanner --save
npx cap sync
npx cap copy

3. modify www/index.html

ADD

<button onclick="myFunction2()">Try it barcode</button>

<script>
    async function myFunction2() {
      cordova.plugins.barcodeScanner.scan(
        result => console.log(result),
        err => console.error(err),
        {
          showTorchButton: true,
          prompt: "Scan your code",
          formats: "QR_CODE",
          resultDisplayDuration: 0
        }
      );
    }
</script>

npx cap sync
npx cap copy

android studio run

PS: use cordova.plugins NOT window.cordova.plugins

siege

http://xstarcd.github.io/wiki/shell/siege.html

https://coder.tw/?p=7198


==========

很像REST Client
1. var = 兩邊不能有空白
EX:
@9020_login = http://192.168.99.100:9020/login

9020_login=http://192.168.99.100:9020/login

2. 當有空白行時
EX:
@_csrf1 = Gxa6Hip4-J_A3L2kpRc72Iclw_Ql8eIcQiTc

@login_challenge = 394bab045e2e4a25be83fe207440787e


如果login_chanllenge是最後一個參數，要補上&
_csrf1=Gxa6Hip4-J_A3L2kpRc72Iclw_Ql8eIcQiTc

login_challenge=394bab045e2e4a25be83fe207440787e&

siege會把CR當成參數內容傳送

==========

siege --help

SIEGE 3.0.6
Usage: siege [options]
siege [options] URL
siege -g URL
Options:
-V, --version VERSION, prints the version number.
-h, --help HELP, prints this section.
-C, --config CONFIGURATION, show the current config.
#在屏幕上打印显示出当前的配置,配置是包括在他的配置文件$HOME/.siegerc中,
#可以编辑里面的参数,这样每次siege 都会按照它运行.
-v, --verbose VERBOSE, prints notification to screen.
#运行时能看到详细的运行信息
-q, --quiet QUIET turns verbose off and suppresses output.
-g, --get GET, pull down HTTP headers and display the
transaction. Great for application debugging.
-c, --concurrent=NUM CONCURRENT users, default is 10
#模拟有n个用户在同时访问,n不要设得太大,因为越大,siege 消耗本地机器的资源越多
-i, --internet INTERNET user simulation, hits URLs randomly.
#随机访问urls.txt中的url列表项,以此模拟真实的访问情况(随机性)
-b, --benchmark BENCHMARK: no delays between requests.
-t, --time=NUMm TIMED testing where "m" is modifier S, M, or H
ex: --time=1H, one hour test.
#持续运行siege ‘n’秒(如10S),分钟(10M),小时(10H)
-r, --reps=NUM REPS, number of times to run the test.
#重复运行测试n次,不能与 -t同时存在
-f, --file=FILE FILE, select a specific URLS FILE.
#指定用urls文件,默认为siege安装目录下的etc/urls.txt
#urls.txt文件：是很多行待测试URL的列表以换行符断开,格式为:
#[protocol://]host.domain.com[:port][path/to/file]
-R, --rc=FILE RC, specify an siegerc file
#指定用特定的siege配置文件来运行,默认的为$HOME/.siegerc
-l, --log[=FILE] LOG to FILE. If FILE is not specified, the
default is used: PREFIX/var/siege.log
#运行结束,将统计数据保存到日志文件siege.log中,可在.siegerc中自定义日志文件
-m, --mark="text" MARK, mark the log file with a string.
-d, --delay=NUM Time DELAY, random delay before each requst
between 1 and NUM. (NOT COUNTED IN STATS)
#hit每个url之间的延迟,在0-n之间
-H, --header="text" Add a header to request (can be many)
-A, --user-agent="text" Sets User-Agent in request
-T, --content-type="text" Sets Content-Type in request




** SIEGE 2.72
** Preparing 300 concurrent users for battle.
The server is now under siege.. done.

Transactions: 30000 hits #完成30000次处理
Availability: 100.00 % #成功率
Elapsed time: 68.59 secs #总共使用时间
Data transferred: 817.76 MB #共数据传输 817.76 MB
Response time: 0.04 secs #响应时间，显示网络连接的速度
Transaction rate: 437.38 trans/sec #平均每秒完成 437.38 次处理
Throughput: 11.92 MB/sec #平均每秒传送数据
Concurrency: 17.53 #实际最高并发连接数
Successful transactions: 30000 #成功处理次数
Failed transactions: 0 #失败处理次数
Longest transaction: 3.12 #每次传输所花最长时间
Shortest transaction: 0.00 #每次传输所花最短时间