Open Source Java HTTP Clients

This library defines an object oriented representation of the GitHub API. By "object oriented" we mean there are classes that correspond to the domain model of GitHub (such as GHUser and GHRepository), operations that act on them as defined as methods (such as GHUser.follow()), and those object references are used in favor of using string handle (such as GHUser.isMemberOf(GHOrganization) instead of GHUser.isMemberOf(String)) The library supports both github.com and GitHub Enterprise. Most of the GitHub APIs are covered, although there are some corners that are still not yet implemented. The library allows connecting to GitHub via several different authentication mechanisms. This library defines a common convention so that applications using this library will look at a consistent location. In this convention, the library looks at ~/.github property file. The content of the files depends on the way you want this library to authenticate as shown.

Java Docker API Client. To start using docker-java , you need to add at least two dependencies. You will need an instance of DockerClientConfig to tell the library how to access Docker, which credentials to use to pull from Docker registries, etc. The builder is available and allows you to configure every property of the client. Should you need to customize the Jackson's ObjectMapper used by docker-java, you can create your own DockerClientConfig. Once you decided which transport to use, you will need to instantiate an HTTP client. Once you have an HTTP client, you can make raw requests to the Docker daemon directly. To get an instance of DockerClient, you need to pass both DockerClientConfig and DockerHttpClient.

NetTool is a developer tool for monitoring and manipulating application-level network messages, particularly useful for debugging web applications and web services. There are two components to NetTool: the HTTP Client, and the TCP Tunnel.

(Really) Thin HTTP Client: no https, small jar file size (never over 25kb), no dependencies (just jre1.6+ or jdk1.6+), can do POST and GET request methods, can send POST methods with multipart/form-data, can send request parameters and fast. Get it!

A Java library that provides accelerated downloads of HTTP/HTTPS URIs via the GET and POST methods. Works similar to download managers as requests are made in parallel and chunked for speed.

Fast, lightweight Web framework based on Netty; without too much dependency, and the core jar package is only 30KB. Configuration files can also be read in multiple environments, just add VM parameters, also ensure that the parameter name and file name are consistent.

A XML pull-parse library for Java 1.2, designed for processing XML protocol messages in the most efficient way possible. Contains a complete HTTP client library.

Fast Android Networking Library is a powerful library for doing any type of networking in Android applications which is made on top of OkHttp Networking Layer. Fast Android Networking Library takes care of each and everything. So you don't have to do anything, just make a request and listen for the response. The recent removal of HttpClient in Android Marshmallow(Android M) made other networking libraries obsolete. No other single library does and everything like making requests, downloading any type of file, uploading file, loading images from the network in ImageView, etc. There are some libraries but they are outdated. No other library provides a simple interface for doing all types of things in networking like setting priority, canceling, etc. As it uses Okio , No more GC overhead in android applications. Okio is made to handle GC overhead while allocating memory. Okio does some clever things to save CPU and memory.

Feign is a Java to HTTP client binder that was built primarily to make writing Java http clients easier. Inspired by previous projects Retrofit, JAXRS-2.0 and WebSocket, Feign was designed to reduce the complexity that is often involved in binding the Denominator uniformly to HTTP APIs, no matter the ReSTfulness. Feign works by processing annotations into a templatized request, to which arguments are applied in a straightforward manner before output. While it may only support text-based APIs, it simplifies system aspects dramatically and makes it much easier to unit test your conversions. Feign makes use of great tools like Jersey and CXF for writing Java clients for ReST or SOAP services. It also lets you write your own code on top of http libraries, and connects your code to http APIs with little overhead.

HTTP Client Plugin is an Eclipse 3.3+ plugin that enables users to construct and execute HTTP protocol messages. It is intended to support protocol level testing of web components.

http-kit is a minimalist, event-driven, high-performance Clojure HTTP server/client library with WebSocket and asynchronous support. A simple, high-performance event-driven HTTP client+server for Clojure. HTTP Kit is an (almost) drop-in replacement for the standard Ring Jetty adapter. So you can use it with all your current libraries (e.g. Compojure) and middleware. Using an event-driven architecture like Nginx, HTTP-kit is very, very fast. It comfortably handles tens of thousands of requests/sec on even midrange hardware. Here is another test about how it stacks up with others. It's not only fast, but efficient! Each connection costs nothing but a few kB of memory. RAM usage grows O(n) with connections. Written from the ground-up to be lean, the entire client/server is available as a single ~90kB JAR with zero dependencies and ~3k lines of (mostly Java) code. Synchronous is simple. Asynchronous is fast & flexible.

Jandy is an internet development framework based on Indy, designed to make writing web clients and servers easier. Currently only the HTTP client and HTTP server frameworks are working, but other protocols will be included, like FTP, POP3, SMTP, etc.

Nginx module for embedding Clojure or Java or Groovy programs, typically those Ring based handlers. Compatible with Ring and obviously supports those Ring-based frameworks, such as Compojure, etc. HTTP Services by using Clojure / Java / Groovy to write simple handlers for HTTP services. A build-in Jersey container to support java standard RESTful web services (JAX-RS 2.0). Tomcat 8 embedding support (so servlet 3.1/jsp/sendfile/JSR-356 WebSocket work within nginx!). Dynamic proxying by using Clojure / Java / Groovy to write a simple nginx rewrite handler to set var or return errors before a proxy pass or content ring handler. The non-blocking coroutine-based socket is Compatible with Java Socket API and works well with largely existing java libraries such as apache HTTP client, mysql jdbc drivers. With this feature, one java main thread can handle thousands of connections. Handle multiple sockets parallel in sub coroutines.

Takes is a true object-oriented and immutable Java8 web development framework. Pay attention that UTF-8 encoding is set on the command line. The entire framework relies on your default Java encoding, which is not necessarily UTF-8 by default. To be sure, always set it on the command line with file.encoding Java argument. We decided not to hard-code "UTF-8" in our code mostly because this would be against the entire idea of Java localization, according to which a user always should have a choice of encoding and language selection. We're using Charset.defaultCharset() everywhere in the code. Essential part of Bigger Example is Front interface. It's encapsulates server's back-end and used to start an instance, which will accept requests and return results. FtBasic, which is a basic front, implements that interface.

This is a java wrapper around the old commons-http-client.3.1 HTTP client which not developed anymore. The wrapper is using the new HttpClient 4.x and keeps binary compatibility. The intention for developing this wrapper was using Axis 2 for accessing a Microsoft Exchange 2010 server which requires a NTLM2 authentication. Not all methods are implemented, but it works for me. Just remove the old commons-httpclient-3.1.jar and add http-client-3-wrapper to your project.

Java API for LiveJournal: XML-RPC services, http client, *.bml client. Requires Java 1.5+