aduquet

I was installing some python libraries that I needed, and this message came up:  

Traceback (most recent call last):
 File "/usr/bin/pip3", line 11, in <module>
 sys.exit(main())
 File "/usr/lib/python3/dist-packages/pip/__init__.py", line 215, in main
 locale.setlocale(locale.LC_ALL, '')
 File "/usr/lib/python3.5/locale.py", line 594, in setlocale
 return _setlocale(category, locale)
locale.Error: unsupported locale setting

aduquet

sh-3.2# lsof -i4

In the COMMAND column is the program that is creating the session (connection). The TYPE column shows whether it is an IPv4 or IPv6 connection. NODE column shows the used transport layer protocol (TCP/UDP), while the last column shows the SRC-IP:PORT -> DST-IP:PORT information. 

I cleaned up the output with some useful linux utilities:

sh-3.2# lsof -nP -i4 | grep -v "localhost\|*\|127.0.0.1" | awk '{printf ("%10s\t%3s\t%s\n", $1, $8, $9)}’

COMMAND NODE  NAME
apsd    TCP  10.140.59.187:61720->17.252.252.86:5223

aduquet

EXAMPLE 1: 

To copy from nuc to jump server:
  scp nuc@nuc3:~/flowRecorder/univ2_pt4-* ./

to Copy from Jump server to PC
  scp -P 2020 aleja@103.196.108.25:univ2* ./
  
EXAMPLE 2:

aduquet

I was runing a python code with some pcaps file, and this message came up:  

      Traceback (most recent call last):
        File "flowRecorder.py", line 900, in <module>
          main()
        File "/home/alduk/Dropbox/Aleja_Internship/FlowID/venv/lib/python3.6/site-packages/click/core.py", line 722, in __call__
          return self.main(*args, **kwargs)
        File "/home/alduk/Dropbox/Aleja_Internship/FlowID/venv/lib/python3.6/site-packages/click/core.py", line 697, in main
          rv = self.invoke(ctx)
        File "/home/alduk/Dropbox/Aleja_Internship/FlowID/venv/lib/python3.6/site-packages/click/core.py", line 895, in invoke

aduquet

I was installing  pcapy, but outgoing notifications like this :

    cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++ [enabled by default]

    pcapdumper.cc:11:18: fatal error: pcap.h: No such file or directory

    #include

         ^

aduquet

traffic generators. 

TRex - TRex is an open source, low cost, stateful and stateless traffic generator fuelled by DPDK. It generates L4-7 traffic based on pre-processing and smart replay of real traffic templates . TRex amplifies both client and server side traffic and can scale up to 200Gb/sec with one UCS.
Latest commit: 16 days ago
https://trex-tgn.cisco.com/

D-ITG - (Distributed Internet Traffic Generator) is a platform capable to produce traffic at packet level accurately replicating appropriate stochastic processes for both IDT (Inter Departure Time) and PS (Packet Size) random variables (exponential, uniform, cauchy, normal, pareto, …). D-ITG supports both IPv4 and IPv6 traffic generation and it is capable to generate traffic at network, transport, and application layer.
Download page last updated: 2 July, 2013
http://traffic.comics.unina.it/software/ITG/

aduquet

Well, this error may looks silly, but I spent a lot of hours looking for the answer 

after excecuting the command "yo code"
I got this error:
  c:\Users\blalbalba\npm\node_modules\yo\node_modules\execa\index.js:347
    thorw err;

and a lot of more things. The mos important was this error line

stderr: "'powershell' is not recognized as an internal or external command,\r\n" +     'operable program or batch file.\r\n',

aduquet

C:\Users\duquet\Documents\Personal\Empresa\quiz-flutter\quiz_app_v2\quiz\android\app\src\debug\AndroidManifest.xml Error:
	uses-sdk:minSdkVersion 16 cannot be smaller than version 19 declared in library [:cloud_firestore] C:\Users\duquet\Documents\Personal\Empresa\quiz-flutter\quiz_app_v2\quiz\build\cloud_firestore\intermediates\library_manifest\debug\AndroidManifest.xml as the library might be using APIs not available in 16
	Suggestion: use a compatible library with a minSdk of at most 16,
		or increase this project's minSdk version to at least 19,
		or use tools:overrideLibrary="io.flutter.plugins.firebase.firestore" to force usage (may lead to runtime failures)

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugMainManifest'.

aduquet

I spend a lot of time trying to access a specific document from firebase DB with flutter. 

This is some links that help me 

https://stackoverflow.com/questions/53517382/query-a-single-document-from-firestore-in-flutter-cloud-firestore-plugin

https://stackoverflow.com/questions/67575893/the-method-cant-be-unconditionally-invoked-because-the-receiver-can-be-nu

https://stackoverflow.com/questions/69624553/flutter-error-the-operator-isnt-defined-for-the-class-object

aduquet

I was dealing with 

type 'Future<dynamic>' is not a subtype of type 'Stream<Object?>?'

I had no Future types in my app however I did have something like this:

  getQuestion(String id, String collectionName) async {
    //var collection = FirebaseFirestore.instance.collection(collectionName);
    // var querySnapshots = await collection.get();
    // for (var snapshot in querySnapshots.docs) {