1. Apache Client Cert
2. Apache Client_max_body_size

Apache client side authentication is based off the httpd modssl documentation and has been deployed for a number of CACert systems like lists and webmail (for staff). Apache configurations for client side authentication should appear in a VirtualHost directive though they can exist under other directives like Location. Apr 19, 2021 Access to the SVN commons/dormant repository is available both online and with a svn client. Related Components @Apache. The Commons HttpClient project used to be a part of Commons, but is now part of Apache HttpComponents - see Jakarta Commons HttpClient. The request line from the client is given in double quotes. The request line contains a great deal of useful information. First, the method used by the client is GET. Second, the client requested the resource /apachepb.gif, and third, the client used the protocol HTTP/1.0. It is also possible to log one or more parts of the request line. Apache Kafka More than 80% of all Fortune 100 companies trust, and use Kafka. Apache Kafka is an open-source distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications.

Welcome to Apache Commons

Apache Commons is an Apache project focused on all aspects of reusable Java components.

The Apache Commons project is composed of three parts:

• The Commons Proper - A repository of reusable Java components.
• The Commons Sandbox - A workspace for Java component development.
• The Commons Dormant - A repository of components that are currently inactive.

You may also read our charter, which spells out the goals of the project in greater detail.

The Apache Commons source code repositories are writable for all ASF committers. While Apache Commons is a Commit-Then-Review community, we would consider it polite and helpful for contributors to announce their intentions and plans on the dev mailing list before committing code. All contributors should read our contributing guidelines. We accept patches as SVN diff files uploaded to the Apache bugtracker or as pull request via our github mirrors.

Apache Commons Proper

Commons Proper is dedicated to one principal goal: creating and maintaining reusable Java components. The Commons Proper is a place for collaboration and sharing, where developers from throughout the Apache community can work together on projects to be shared by the Apache projects and Apache users.

Commons developers will make an effort to ensure that their components have minimal dependencies on other libraries, so that these components can be deployed easily. In addition, Commons components will keep their interfaces as stable as possible, so that Apache users (including other Apache projects) can implement these components without having to worry about changes in the future.

This article gives an overview of (some of) the components which can be found here.

We welcome participation from all that are interested, at all skill levels. Coding, documentation and testing are all critical parts of the software development process. If you are interested in participating in any of these aspects, please join us!

The Commons Sandbox

The Commons project also contains a workspace that is open to all Apache committers. It's a place to try out new ideas and prepare for inclusion into the Commons portion of the project or into another Apache project. Users are free to experiment with the components developed in the sandbox, but sandbox components will not necessarily be maintained, particularly in their current state.

See here for Sandbox components.

The Commons Dormant

These are Commons components that have been deemed inactive since they have seen little recent development activity. If you wish to use any of these components, you must build them yourselves. It is best to assume that these components will not be released in the near future.

See here for Dormant components.

Where do I get releases?

The individual components have independent releases. Some releases for some components may be available only through the mirroring system. Some releases for some components (typically the older ones) are not available through the mirroring system.

See the individual websites listed above for the specific downloads, or use the Releases menu option.

How do I contribute, give feedback, fix bugs and so on?

The Commons project really needs and appreciates any contributions, including documentation help, source code and feedback.

• Discussion occurs on the Commons mailing list.
• We have an IRC channel on freenode - join #apache-commons.
• Access to the SVN commons/proper repository is available both online and with a svn client.
• Access to the SVN commons/sandbox repository is available both online and with a svn client.
• Access to the SVN commons/dormant repository is available both online and with a svn client.

Related Components @Apache

The Commons HttpClient project used to be a part of Commons, but is now part of Apache HttpComponents - see Jakarta Commons HttpClient

You can use the Pulsar C# client (DotPulsar) to create Pulsar producers and consumers in C#. All the methods in the producer, consumer, and reader of a C# client are thread-safe. The official documentation for DotPulsar is available here.

Installation

You can install the Pulsar C# client library either through the dotnet CLI or through the Visual Studio. This section describes how to install the Pulsar C# client library through the dotnet CLI. For information about how to install the Pulsar C# client library through the Visual Studio , see here.

Prerequisites

Install the .NET Core SDK, which provides the dotnet command-line tool. Starting in Visual Studio 2017, the dotnet CLI is automatically installed with any .NET Core related workloads.

Procedures

To install the Pulsar C# client library, following these steps:

1. Create a project.

   1. Create a folder for the project.

   2. Open a terminal window and switch to the new folder.

   3. Create the project using the following command.

   4. Use dotnet run to test that the app has been created properly.

2. Add the DotPulsar NuGet package.

   1. Use the following command to install the DotPulsar package.

   2. After the command completes, open the .csproj file to see the added reference.

Client

This section describes some configuration examples for the Pulsar C# client.

Create client

This example shows how to create a Pulsar C# client connected to localhost.

To create a Pulsar C# client by using the builder, you can specify the following options.

Create producer

This section describes how to create a producer.

• Create a producer by using the builder.

• Create a producer without using the builder.

Create consumer

This section describes how to create a consumer.

• Create a consumer by using the builder.

• Create a consumer without using the builder.

Create reader

This section describes how to create a reader.

• Create a reader by using the builder.

• Create a reader without using the builder.

Configure encryption policies

The Pulsar C# client supports four kinds of encryption policies:

• EnforceUnencrypted: always use unencrypted connections.
• EnforceEncrypted: always use encrypted connections)
• PreferUnencrypted: use unencrypted connections, if possible.
• PreferEncrypted: use encrypted connections, if possible.

This example shows how to set the EnforceUnencrypted encryption policy.

Configure authentication

Currently, the Pulsar C# client supports the TLS (Transport Layer Security) and JWT (JSON Web Token) authentication.

If you have followed Authentication using TLS, you get a certificate and a key. To use them from the Pulsar C# client, follow these steps:

1. Create an unencrypted and password-less pfx file.

2. Use the admin.pfx file to create an X509Certificate2 and pass it to the Pulsar C# client.

Producer

A producer is a process that attaches to a topic and publishes messages to a Pulsar broker for processing. This section describes some configuration examples about the producer.

Send data

This example shows how to send data.

Send messages with customized metadata

• Send messages with customized metadata by using the builder.

• Send messages with customized metadata without using the builder.

Consumer

A consumer is a process that attaches to a topic through a subscription and then receives messages. This section describes some configuration examples about the consumer.

Receive messages

This example shows how a consumer receives messages from a topic.

Acknowledge messages

Messages can be acknowledged individually or cumulatively. For details about message acknowledgement, see acknowledgement.

• Acknowledge messages individually.

• Acknowledge messages cumulatively.

Unsubscribe from topics

This example shows how a consumer unsubscribes from a topic.

Note

A consumer cannot be used and is disposed once the consumer unsubscribes from a topic.

Reader

A reader is actually just a consumer without a cursor. This means that Pulsar does not keep track of your progress and there is no need to acknowledge messages.

This example shows how a reader receives messages.

Monitoring

This section describes how to monitor the producer, consumer, and reader state.

Monitor producer

The following table lists states available for the producer.

This example shows how to monitor the producer state.

Monitor consumer state

The following table lists states available for the consumer.

This example shows how to monitor the consumer state.

Monitor reader state

The following table lists states available for the reader.

Apache Client Cert

Apache Client_max_body_size

This example shows how to monitor the reader state.