The following example configures a before route predicate: This route matches any request made before Jan 20, 2017 17:42 Mountain Time (Denver). The RemoteAddr Route Predicate Factory, 5.10.1. spring: cloud: gateway: routes: - id: add_response_header_route uri: https://example.org predicates: - Host: {segment}.myhost.org filters: - AddResponseHeader=foo,bar-{segment} This is similar to how AddRequestHeader works, but unlike AddRequestHeader it will do it only if the header is not already there. spring.cloud.gateway.filter.local-response-cache.size: Sets the maximum size of the cache to evict entries for this route (in KB, MB and GB). The following headers (shown with their default values) are added: Strict-Transport-Security (max-age=631138519), Content-Security-Policy (default-src 'self' https:; font-src 'self' https: data:; img-src 'self' https: data:; object-src 'none'; script-src https:; style-src 'self' https: 'unsafe-inline)'. application.yml. To add this functionality to the gateway, you need to add the TokenRelayGatewayFilterFactory like this: and it will (in addition to logging the user in and grabbing a token) Closing due to lack of requested feedback. A steady rate is accomplished by setting the same value in replenishRate and burstCapacity. The following example shows how to do so: You can route gateway routes to both HTTP and HTTPS backends. status codes that if returned will cause the circuit breaker to be tripped. To delete a route, make a DELETE request to /gateway/routes/{id_route_to_delete}. Spring Cloud supports Resilience4J out of the box. The following listing configures a Retry GatewayFilter: A simplified "shortcut" notation can be added with a single status and method. The Forwarded Headers Filter creates a Forwarded header to send to the downstream service. This is the number of tokens the token bucket can hold. The The filter also looks in the ServerWebExchangeUtils.GATEWAY_SCHEME_PREFIX_ATTR attribute to see if it equals lb. Setting this value to zero blocks all requests. This is useful when you try to support CORS preflight requests and your route predicate does not evaluate to true because the HTTP method is options. It uses the Netty HttpClient to make the downstream proxy request. The j_spring_security_switch_user function in Cisco Unified Intelligence Center (CUIC) 8.5.4 through 9.1(1), as used in Unified Contact Center Express 10.0(1) through 11.0(1), allows remote attackers to create user accounts by visiting an unspecified web page, aka Bug IDs CSCuy75027 and CSCuy81653. Fork 3. The following example configures a XForwardedRemoteAddr route predicate: This route matches if the X-Forwarded-For header contains, for example, 192.168.1.10. Spring Cloud Gateway 1AddRequestHeader GatewayFilter Factory2AddRequestParameter GatewayFilter Factory3AddResponseHeader GatewayFilter Factory4DedupeResponseHeader GatewayFilter Fa. The HTTP Cache-Control header allows caching (that means it does not have any of the following values: no-store present in the request and no-store or private present in the response). These are special filters that are conditionally applied to all routes. Httpbin.org - a website and diagnosis tool which converts Http GET request data into a JSON response; Step 1: Create a project. To configure per-route timeouts: It creates a new URI, based off of the request URI but updated with the URI attribute of the Route object. Spring Cloud Gateway includes many built-in route predicate factories. 2016-10-05: 4.3: CVE-2016-6426 CISCO Once matched, the Gateway executes pre-request logic on each of the filters applied to the route. The Cookie route predicate factory takes two parameters, the cookie name and a regexp (which is a Java regular expression). In addition, through the spring.cloud.gateway.metrics.tags.path.enabled property (by default, false), you can activate an extra metric with the path tag: These metrics are then available to be scraped from /actuator/metrics/spring.cloud.gateway.requests and can be easily integrated with Prometheus to create a Grafana dashboard. The following example configures an SetResponseHeader GatewayFilter that uses a variable: The SetStatus GatewayFilter factory takes a single parameter, status. The following example configures a weight route predicate: This route would forward ~80% of traffic to weighthigh.org and ~20% of traffic to weighlow.org. The following listing configures a ReactiveLoadBalancerClientFilter: If there is a Route object in the ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR exchange attribute, the RouteToRequestUrlFilter runs. The collection of filters applied to the route. to your account, I am trying to modify a header of response in a post filter of gateway,the filter handle a cors problem which would filt websockt service ,the websockt service is a micro-service which must been decorated with cors configurationso a websockt request will get a response with multiple header like Access-Control-Allow-Origin, to solve this questioni must modify the response header of the key Access-Control-Allow-OriginHowever ,when i do this, a error occured, java.lang.UnsupportedOperationException: null at org.springframework.http.ReadOnlyHttpHeaders.set(ReadOnlyHttpHeaders.java:99) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE] at com.apigw.filter.CORSFilter.lambda$filter$0(CORSFilter.java:84) ~[classes/:na] at reactor.core.publisher.MonoRunnable.call(MonoRunnable.java:73) ~[reactor-core-3.2.8.RELEASE.jar:3.2.8.RELEASE]. By default, if the KeyResolver does not find a key, requests are denied. By default, when a service instance cannot be found by the, Gateway supports all the LoadBalancer features. The default implementation of KeyResolver is the PrincipalNameKeyResolver, which retrieves the Principal from the ServerWebExchange and calls Principal.getName(). The redis-rate-limiter.replenishRate property defines how many requests per second to allow (without any dropped requests). The following example configures a PrefixPath GatewayFilter: This prefixes /mypath to the path of all matching requests. If youre using load-balanced routes, you need to explicitly define your. Then, by default, the gateway metrics filter runs as long as the spring.cloud.gateway.metrics.enabled property is not set to false. a circuit breaker. keyResolver is a bean that implements the KeyResolver interface. Properties. The datetime2 parameter must be after datetime1. From the drop down, choose Mapping template and copy and paste the mapping template text below into the Template input box. Otherwise, the original value in the client request is sent. The response is put in the ServerWebExchangeUtils.CLIENT_RESPONSE_ATTR exchange attribute for use in a later filter. For the external controller/handler scenario, headers can be added with exception details. The Spring Cloud CircuitBreaker filter can also accept an optional fallbackUri parameter. By clicking Sign up for GitHub, you agree to our terms of service and Star 14. }) If max-age is present on the original response, the value is rewritten with the number of seconds set in the timeToLive configuration parameter. You can configure these timeouts can be configured (defaults shown) as follows: Configuration for Spring Cloud Gateway is driven by a collection of RouteDefinitionLocator instances. Server. This filter works only with HTTP (including HTTPS) requests. URI variables may be used in the value and are expanded at runtime. This applies the filter to all requests. As a result, you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. It uses the Spring WebSocket infrastructure to forward the websocket request downstream. Writing Custom GatewayFilter Factories, 17.2.1. The following example configures an AddRequestHeadersIfNotPresent GatewayFilter: This listing adds 2 headers X-Request-Color-1:blue and X-Request-Color-2:green to the downstream requests headers for all matching requests. See the Spring Cloud Project page for details on setting up your build system with the current Spring Cloud Release Train. public RouteLocator customRouteLocator(RouteLocatorBuilder routeBuilder){ The protocolsRegex parameter must be a valid regex String, against which the protocol name is matched. The resulting response is similar to the following: The following table describes the structure of the response: The collection of route predicates. For example, you can match on the path segment of the URL or the HTTP method of the request. So a request to /hello is sent to /mypath/hello. The following describes an alternative style gateway. ServerWebExchangeUtils.isAlreadyRouted takes a ServerWebExchange object and checks if it has been routed. Currently, only forward: schemed URIs are supported. You can read more about them in the. Spring Cloud Gateway offers two RouteDefinitionRepository implementations. Each item defines the name and the arguments of a given predicate. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency. responseCode; responseHeaderTransformations; responseMessage; type; . forwards the incoming token to outgoing resource requests. Then, by default, the metrics will be available as long as the property spring.cloud.gateway.metrics.enabled is set to true. You can extend an abstract class called AbstractGatewayFilterFactory. If you include the starter, but you do not want the gateway to be enabled, set spring.cloud.gateway.enabled=false. The following listing shows how it works: This style also allows for more custom predicate assertions. If it is not provided, the value of the Host request header is used. .metadata(CONNECT_TIMEOUT_ATTR, 200); This predicate matches cookies that have the given name and whose values match the regular expression. The Reactor Netty HttpClient and HttpServer can have wiretap enabled. GitHub spring-cloud / spring-cloud-gateway Public Notifications Fork 2.9k Star 3.9k Code Issues 337 Pull requests 39 Actions Projects Security Insights New issue How to modify spring cloud gateway response headers #1092 Closed consumer can be a pure Client (like an SSO application) or a Resource Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Configure for High Availability. Displays the list of GatewayFilter factories applied to a particular route. Getting the refreshTokenMono is webclient call which is in a different service.. By the time it gives the response, main response is already about to commit and wont allow us to modify the response headers. If Spring Cloud Gateway is, for example only accessible through HAProxy, then a value of 1 should be used. The following listing configures a SetStatus GatewayFilter: In either case, the HTTP status of the response is set to 401. The following listing shows how to add local response cache GatewayFilter: The MapRequestHeader GatewayFilter factory takes fromHeader and toHeader parameters. GitHub Gist: instantly share code, notes, and snippets. returned from the route it wraps. Oracle Cloud Infrastructure SDK for TypeScript and JavaScript API Reference - 2.53.1. This strips the service ID from the path before the request is sent downstream. To write a custom global filter, you must implement GlobalFilter interface as a bean. In configuration, reference the bean by name using SpEL. The following example configures an AddRequestHeader GatewayFilter that uses a variable: The AddRequestHeadersIfNotPresent GatewayFilter factory takes a collection of name and value pairs separated by colon. Displays information about a particular route. The following example configures CORS: In the preceding example, CORS requests are allowed from requests that originate from docs.spring.io for all GET requested paths. The name and argument names are listed as code in the first sentence or two of each section. This is the full configuration of the shortcut configuration of the Cookie predicate shown above. status codes you want to trip the circuit breaker you can either use an integer with the status code and puts it in a request header for the downstream requests. You can configure additional parameters for each route by using metadata, as follows: You could acquire all metadata properties from an exchange, as follows: Http timeouts (response and connect) can be configured for all routes and overridden for each specific route. The following example configures an AddRequestHeadersIfNotPresent GatewayFilter that uses a variable: The AddRequestParameter GatewayFilter Factory takes a name and value parameter. Spring Cloud Gateway Response Modification Raw README.md Overview As of this writing, there's a somewhat limited/restrictive means of applying HTTP response transformations/modifications via Spring Cloud Gateway, probably because it needs to accommodate both the Mono and Flux (aka "reactive") models. The following examples show how to set up global pre- and post-filters, respectively: Spring Cloud Gateway provides a utility object called ProxyExchange. org.springframework.cloud.gateway.filter.factory.rewrite.ModifyResponseBodyGatewayFilterFactory body gzipchunkedHTTP Filter MonoFluxtry catch .just (xxx).doOnError () 2.2 It also allows you to pass multi-value headers in the API response to implement things like sending multiple Set-Cookie headers. When communicating over HTTPS, the client initiates a TLS handshake. For example, setting replenishRate=1, requestedTokens=60, and burstCapacity=60 results in a limit of 1 request/min. The following example configures an after route predicate: This route matches any request made after Jan 20, 2017 17:42 Mountain Time (Denver). Download ZIP. This route matches if the request has a Host header with a value of www.somehost.org or beta.somehost.org or www.anotherhost.org. If the URL has a lb scheme (such as lb://myservice), it uses the Spring Cloud ReactorLoadBalancer to resolve the name (myservice in this example) to an actual host and port and replaces the URI in the same attribute.