dk-server | A tcp server framework based on libevent-bufferevent | HTTP library

by jlijian3 C++ Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | dk-server Summary

dk-server is a C++ library typically used in Networking, HTTP applications. dk-server has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A tcp server framework based on libevent-bufferevent. Depend on libevent2.0.x.

Support

Quality

Security

License

Reuse

Support

dk-server has a low active ecosystem.

It has 19 star(s) with 18 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

dk-server has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of dk-server is current.

Quality

dk-server has no bugs reported.

Security

dk-server has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

dk-server does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

dk-server releases are not available. You will need to build from source code and install.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of dk-server

Get all kandi verified functions for this library.

dk-server Key Features

No Key Features are available at this moment for dk-server.

dk-server Examples and Code Snippets

No Code Snippets are available at this moment for dk-server.

Community Discussions

Trending Discussions on dk-server

DPDK application test-pipeline fails in app_ports_check_link

Proper way to apply ip fragmentation in multiple cores in DPDK

OPCUA Milo- Stack-Core Failure - building phase

XQuery error XPST0003 syntax error

Maven Error Building MILO OPC-UA

Jetty: lang.NoSuchMethodError: org.eclipse.jetty.util.thread.ExecutionStrategy.execute()V

QUESTION

DPDK application test-pipeline fails in app_ports_check_link

Asked 2020-Jul-02 at 09:20

Test Setup: Linux-Server-1 Port-A <==> Port 1 DPDK-Server-2 Port 2 <==> Port B Linux-Server-2.

Steps Followed:

The physical links are connected
Devices bound to DPDK:

...

ANSWER

Answered 2020-Jul-02 at 09:20

Explanation:

Running ethtool -while application is down is not a trusted way. Depending upon DPDK version rte_eth_dev_closeorrte_cleanup` would not have put the NIC in the right state.
But while running the application, if DPDK port-1 is coming as down following can be reason

a. Server-3 port might be auto-negotiating with DPDK port-1 leading to rte_eth_link_get_nowait to report as down. (right API is to invoke rte_eth_link_get). b. The Server-3 port might manually be configured in non-duplex and non 10G mode.

the right way to debug is to

put DPDK port back to the kernel as suggested in comments.
cross-check auto-neg and speed.
configure on server-1 and server-3 with no auto-neg, 10G, full-duplex
bind the server-2 port-0 and port-1 to DPDK.
run DPDK test-pipeline if possible with whitelist.
run ethtool -t for port-B on server-3 to cross the results too.

note: this will help you identify if it server-3 ports driver/firmware which acts differently with auto-neg as the ports are sending and receiving packets is successful with example/skeleton with command $RTE_SDK/examples/skeleton/build/basicfwd -l 1

[EDIT-1] based on the update from the comment it looks like rte_eth_link_get_nowait is the fast approach, the right one is to be used with rte_eth_link_get. Requested for online debug with the author

[EDIT-2] based on the comment rte_eth_link_get has done the desired job. As I recollect rte_eth_link_get wait for the actual readout from physical device registers, while rte_eth_link_get_nowait is invoked without wait. hence the right values are populated for rte_eth_link_get.

Source https://stackoverflow.com/questions/62635096

QUESTION

Proper way to apply ip fragmentation in multiple cores in DPDK

Asked 2018-Nov-09 at 05:28

Hello Stackoverflow experts,

I am having trouble applying ip fragmentation in multiple cores.

My ultimate questions is whether it is possible to have multiple ip fragmentation table allocated with each different direct and indirect pool.

Really thankful if somebody can point out what I am doing wrong here or provide me with some alternative solutions.

Purpose

I am trying to apply ip fragmentation in multiple cores, and maximize the throughput performance with messages that are bigger than MTU.

for each local & remote host (using 1 to 8 logical cores)
1 ~ 4 for transferring fragmented message
4 ~ 8 for receiving and assemble message
Sending 4KB message from local
remote echos the message back to the local.
calculate the total throughput

Problem

If I try to allocate fragmentation table to each of the cores, I get a segmentation error, and this happens no matter I shrink the size of the fragmentation table. The way I have tried to allocate the pools and frag-table are like this below.

...

ANSWER

Answered 2018-Nov-05 at 12:31

1. Please provide source code

It will help to get you answers, not guesses ;)

2. Fragment Table vs lcores

DPDK Programmers Guide clearly states:

all update/lookup operations on Fragment Table are not thread safe.

Source

So each lcore must have its own fragment table or locks must be used.

3. Memory Pools vs lcores

By default memory pools in DPDK are thread safe, unless we pass a flag like MEMPOOL_F_SP_PUT. So, answering your question:

whether it is possible to have multiple ip fragmentation table allocated with each different direct and indirect pool.

By default, few lcores can share memory pools.

4. Guess!

As there is no source code, so I guess the root cause is that the TTL for the fragments is less than 1 second, so with sleep(1) packets arrive too late to get reassembled.

5. Side note

Reassembly is very time- and space-consuming operation and should be avoided at all costs.

Consider some ways to fit your message into one packet by changing the protocol or using jumbo frames.

Source https://stackoverflow.com/questions/53148282

QUESTION

OPCUA Milo- Stack-Core Failure - building phase

Asked 2018-Sep-21 at 14:33

I've a problem with building Opcua Milo project for eclipse. Here the link: https://github.com/eclipse/milo . I need to run the standalone examples for security but when I build the project (cleaning the pom and then when I go to install it I've this failure.

Can You give me some advice? Thank You; Sal.

EDIT 1: Error Text

...

ANSWER

Answered 2018-Sep-21 at 14:33

You need to build with JDK 8. This is mentioned in the README but it’s easy to miss.

Source https://stackoverflow.com/questions/52444391

QUESTION

XQuery error XPST0003 syntax error

Asked 2018-Aug-25 at 18:21

I want to query a site and generate HTML. I am new to XQuery. I am using eXide from eXist-db. I tried to use oXygen but keep having troubles with the eXist-db. Besides that I don't understand why this code does not work in eXide:

...

ANSWER

Answered 2017-Jun-07 at 14:56

There is a typo at the end of the following line, namely a missing comma between the variable and the string in $amp"key=".

Source https://stackoverflow.com/questions/44410938

QUESTION

Maven Error Building MILO OPC-UA

Asked 2018-Jun-16 at 09:54

I am trying to build Milo to run the standalone examples. From the project root I run mvn clean install but maven complaints about all org.opcfoundation.* dependencies both in bsd-parser-core and bsd-parser-gson.

Error message:

...

ANSWER

Answered 2018-Mar-16 at 15:55

Have you fetched/updated recently? There were some issues with version numbers that broke the build recently: https://github.com/eclipse/milo/issues/230

They have been fixed on HEAD

Source https://stackoverflow.com/questions/49324544

QUESTION

Jetty: lang.NoSuchMethodError: org.eclipse.jetty.util.thread.ExecutionStrategy.execute()V

Asked 2018-Feb-28 at 19:39

I upgraded dropwizard to the latest 1.2.4 from 1.0.2. Now I am seeing the below exception in my logs

...

ANSWER

Answered 2018-Feb-28 at 19:39

The only way that's possible is if you have mismatched versions of jetty-io and jetty-util classes.

Run this code (in your project) to figure out where the classes are (it will report all locations, even if they are in multiple locations):

Source https://stackoverflow.com/questions/49028947

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install dk-server

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: