# HTTP Request Function This module provides an HTTP request function that can be reused and composed in other applications. The `Function` uses the reactive `WebClient` from `Spring WebFlux` and is implemented as a `java.util.function.Function`. This function gives you a reactive stream of `ResponseEntity` given a stream of request messages as the function a signature of `Function<Flux<Message<?>,Flux<ResponseEntity>>`. Users have to subscribe to the returned `Flux` to receive the data. ## Beans for injection You can import the `HttpRequestFunction` configuration in a Spring Boot application and then inject the following bean. `httpRequestFunction` You may inject this as `HttpRequestFunction`. You can use `httpRequestFunction` as a qualifier when injecting. Once injected, you can use the `apply` method of the `Function` to invoke it and then subscribe to the returned `Flux`. ## Configuration Options All configuration properties are prefixed with `http.request`. For more information on the various options available, please see link:src/main/java/org/springframework/cloud/fn/http/request/HttpRequestFunctionProperties.java[HttpRequestFunctionProperties.java] ## Examples See this link:src/test/java/org/springframework/cloud/fn/http/request/HttpRequestFunctionApplicationTests.java[test suite] for examples of how this function is used. ## Other usage See this link:../../../applications/processor/http-request-processor/README.adoc[README] where this function is used to create a Spring Cloud Stream application to process HTTP requests.