Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.
Closed 5 years ago.
Improve this question
There is a list of Java HTTP/2 client implementations. I've found Jetty, Netty and OkHttp code examples and seems like they all need to include specific version of ALPN library depending on jdk installed. I don't like it because it makes troubles when you are not the only developer on the project.
I need to query https urls. The question is: are there any HTTP/2 client implementations that don't use ALPN? Working code examples are welcome. Thank you!
OkHttp works without any special alpn-boot jars on Java 9 beta, this is automatic. In future OkHttp could hopefully also support https://github.com/google/conscrypt.
I believe both Jetty and Netty support HTTP/2 prior knowledge (without NPN/ALPN).
e.g. Jetty
https://github.com/eclipse/jetty.project/blob/0c8273f2ca1f9bf2064cd9c4c939d2546443f759/jetty-http2/http2-http-client-transport/src/test/java/org/eclipse/jetty/http2/client/http/DirectHTTP2OverTLSTest.java#L86
HttpClientTransportOverHTTP2 transport = new HttpClientTransportOverHTTP2(new HTTP2Client());
transport.setUseALPN(false);
client = new HttpClient(transport, newSslContextFactory());
I believe for Netty it works if you use HttpToHttp2ConnectionHandler
Related
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.
Closed 4 years ago.
Improve this question
I'm trying to create an app for Android that simply sends a command to an SSH server. No response needed, I just need to be able to send a command. I was wondering if there's any java library out there that I could use?
No advanced stuff needed, just a pure connection to send the command.
You are searching for JSch.
Other libs are jaramiko, paramiko, trilead-ssh2 . A place where you can browse the source for trilead is the connectbot project. Please notice that connectbot also uses this unmaintained lib.
It also exists a commercial SSH Java lib: J2SSH Maverick
Note: Answer refactored due to comment.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.
Closed 8 years ago.
Improve this question
I am trying to create an application which entails communication with an OPC HDA server to get historical values of tags.
I was wondering if there are any free/open source libraries available in Java which can help me do that.
I have already tried the following options:
Integration Objects Java Wrapper: It internally uses JNI. When client and server are not co-located, it is difficult to get it working. It is licensed.
jInterop: Implements the MSRPC protocol and thus does not rely on JNI. Is portable. However, the OPC HDA interfaces are quite complex and I was not able to call them via jInterop. Also the errors that it throws are quite obscure, so troubleshooting is a major issue with this library. The call that I was not able to get working was the IOPCHDA_SyncRead::ReadRaw.
For the reasons stated above, I am not keen on using both these libraries.
Any help/pointers will be greatly appreciated.
Thanks,
Saurabh
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.
Closed 2 years ago.
Improve this question
I have a requirement to do a web based interactive application in which server could push data in to the clients(web browser , android phone or JME phone). I have suggested to use Websockets rather than reverse ajax. Is there any nice framework for java to implement websockets. Please suggest.
The following very similar sounding Java servers / frameworks have web socket support:
Jetty
Netty
Note that web sockets aren't universally supported as a result of security issues (and because Microsoft doesn't want to).
You could also consider looking at some of the JMS providers that provide JMS to web sockets e.g. HornetQ and ActiveMQ using Stomp.
No need, Java has it's own very intuitive socket library.
api: http://download.oracle.com/javase/1.4.2/docs/api/java/net/Socket.html
tutorial: http://download.oracle.com/javase/tutorial/networking/sockets/
Grizzly also has websockets support for what it's worth. But one reason to use websockets rather than java.net.Socket is that websockets can traverse firewalls and proxies transparently without having to reconfigure network ports/policies.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.
Closed 7 years ago.
Improve this question
We will shortly build a prototype which will play the role of an OAuth client to interact with sites such as Facebook. A requirement is that we use OAuth 2.0 (knowing it is still in draft status).
Do you know of any Open Source Java implementations of an OAuth 2.0 client library?
Our goal is to use it in our prototype, contributing to the project if possible.
Look at newly released java library: leeloo.smartam.net
Compliant with oauth 2.0 draft 10, same as used by Facebook.
Take a look at Library for OAuth Consumer (Java)
Take a look at this -
http://oauth.googlecode.com/svn/code/
You have Java client implementations too.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.
Closed 7 years ago.
Improve this question
Where can I find the source code for isUserInRole? All I find are only interfaces or calling to super.isUserInRole
You can find it in the concrete implementation. As you see, Java EE is an abstract API, it exist of almost only interfaces. It has the benefit that you can deploy your webapplication on whatever server you want.
The concrete implementations are called application servers and/or servlet containers, like Sun Glassfish, IBM WebSphere, Oracle Weblogic, Apache Tomcat, Eclipse Jetty, etcetera. You need to check if your server implementation is open source and then download the source from the vendor's homepage.
Tomcat 6.0 for example is open source, you can download it here (check the Source Code Distributions links at the bottom). It is in the org.apache.catalina.connector.Request class.