Currently, only forward: schemed URIs are supported. This handler runs the request through a filter chain that is specific to the request. If basedOnPreviousValue is true, the backoff is calculated by using prevBackoff * factor. Likewise to the RedisRateLimiter Filter Factory it requires the use of the spring-boot-starter-data-redis-reactive Spring Boot starter. Spring Cloud Gateway matches routes as part of the Spring WebFlux HandlerMapping infrastructure. We've already covered its basic usage in earlier tutorials, so we won't get into those aspects here. The circuit breaker config object takes a list of You signed in with another tab or window. By clicking Sign up for GitHub, you agree to our terms of service and If none of these parameters are configured but the global filter is enabled, by default, it configures 5 minutes of time to live for the cached response. }, 4. reverse proxies. The /gateway actuator endpoint lets you monitor and interact with a Spring Cloud Gateway application. Post global filters are usually used in spring cloud gateway to perform operations on response like adding some headers or modifying response body or response status etc. Refresh the page, check Medium 's site status, or find something interesting to read. The weights are calculated per group. You can adjust this behavior by setting the spring.cloud.gateway.filter.request-rate-limiter.deny-empty-key (true or false) and spring.cloud.gateway.filter.request-rate-limiter.empty-key-status-code properties. URI variables may be used in the value and are expanded at runtime. Acompanhe-nos: can gabapentin help with bell's palsy Facebook HttpHeadersFilters are applied to the requests before sending them downstream, such as in the NettyRoutingFilter. 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)'. Add a response header named X-Request-Foo with a value of Bar to the original response. The default request size is set to five MB if not provided as a filter argument in the route definition. GatewaySampleApplication.java. By using the fluent Java API, you can use the and(), or(), and negate() operators on the Predicate class. Gunzenhausen (German pronunciation: [ntsnhazn] (); Bavarian: Gunzenhausn) is a town in the Weienburg-Gunzenhausen district, in Bavaria, Germany.It is situated on the river Altmhl, 19 kilometres (12 mi) northwest of Weienburg in Bayern, and 45 kilometres (28 mi) southwest of Nuremberg.Gunzenhausen is a nationally recognized recreation area. .metadata(RESPONSE_TIMEOUT_ATTR, 200) If you would like us to look at this issue, please provide the requested information and we will re-open the issue. Spring Cloud supports Resilience4J out of the box. Here is a link to someone asking about ordered filters that may provide more insight: #1341. The previous sample defines the Cookie Route Predicate Factory with two arguments, the cookie name, mycookie and the value to match mycookievalue. status codes that if returned will cause the circuit breaker to be tripped. The following example configures a between route predicate: This route matches any request made after Jan 20, 2017 17:42 Mountain Time (Denver) and before Jan 21, 2017 17:42 Mountain Time (Denver). keyResolver is a bean that implements the KeyResolver interface. AddResponseHeader is aware of URI variables used to match a path or host. The gateway maintains a client pool that it uses to route to backends. 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. The following properties are available: To disable the default values set the spring.cloud.gateway.filter.secure-headers.disable property with comma-separated values. The following example configures a host route predicate: URI template variables (such as {sub}.myhost.org) are supported as well. return routeBuilder.routes() NEVER_STRIP: The version is not stripped, even if the original request path contains no version. This lets you match on anything from the HTTP request, such as headers or parameters. You can find more information on doing so in the FallbackHeaders GatewayFilter Factory section. /resource). I got the root cause. The following listing configures a SetRequestHostHeader GatewayFilter: The SetRequestHostHeader GatewayFilter factory replaces the value of the host header with example.org. Spring Cloud Gateway - read response body and set response headers Ask Question Asked 1 year, 11 months ago Modified 1 year, 11 months ago Viewed 675 times 0 I want to implement a GatewayFilter that reads the response body and out of this the response code is determined and should then be set afterwards. Star 14. If the URL located in the ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR exchange attribute has a ws or wss scheme, the websocket routing filter runs. It provides a convenient method to apply a transformation to JSON body content by deleting attributes from it. The RemoveJsonAttributesResponseBody GatewayFilter factory takes a collection of attribute names to search for, an optional last parameter from the list can be a boolean to remove the attributes just at root level (thats the default value if not present at the end of the parameter configuration, false) or recursively (true). The RemoteAddr route predicate factory takes a list (min size 1) of sources, which are CIDR-notation (IPv4 or IPv6) strings, such as 192.168.0.1/16 (where 192.168.0.1 is an IP address and 16 is a subnet mask). This applies the filter to all requests. For example, you can match on the path segment of the URL or the HTTP method of the request. To enable wiretap, set spring.cloud.gateway.httpserver.wiretap=true or spring.cloud.gateway.httpclient.wiretap=true for the HttpServer and HttpClient, respectively. The Spring Cloud Gateway project is built on top of the popular Spring Boot 2 and Project Reactor, so it inherits its main treats: Low resource usage, thanks to its reactive nature Support for all goodies from the Spring Cloud ecosystem (discovery, configuration, etc.) The filter also looks in the ServerWebExchangeUtils.GATEWAY_SCHEME_PREFIX_ATTR attribute to see if it equals lb. Sharing Routes between multiple Gateway instances, 17.1. The RemoveRequestHeader GatewayFilter factory takes a name parameter. spring.cloud.gateway.filter.local-response-cache.timeToLive Sets the time to expire a cache entry (expressed in s for seconds, m for minutes, and h for hours). There are many caching cases on the network, but there are various Bug problems in the testing process. If the Gateway Handler Mapping determines that a request matches a route, it is sent to the Gateway Web Handler. The following example configures an AddRequestHeadersIfNotPresent GatewayFilter that uses a variable: The AddRequestParameter GatewayFilter Factory takes a name and value parameter. Route filters are scoped to a particular route. Code Revisions 1 Stars 14 Forks 3. A per-route response-timeout with a negative value will disable the global response-timeout value. When combined with setting the reactor.netty log level to DEBUG or TRACE, it enables the logging of information, such as headers and bodies sent and received across the wire. The ServerHttpResponse instance is used to . The new URI is placed in the ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR exchange attribute. When communicating over HTTPS, the client initiates a TLS handshake. 1. The RequestRateLimiter GatewayFilter factory uses a RateLimiter implementation to determine if the current request is allowed to proceed. 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. Spring Cloud has it's own way of defining Feign clients, it's done with Spring MVC annotations. For the external controller/handler scenario, headers can be added with exception details. connect-timeout must be specified in milliseconds. This filter takes an optional keyResolver parameter and parameters specific to the rate limiter (described later in this section). Writing Custom GatewayFilter Factories, 17.2.1. 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 request returns a 200 without a response body. cloudflare tunnel home assistant 19 3407 . extracts an access token from the currently authenticated user, This approach is vulnerable to spoofing, as a malicious client could set an initial value for the X-Forwarded-For, which would be accepted by the resolver. To provide the same CORS configuration to requests that are not handled by some gateway route predicate, set the spring.cloud.gateway.globalcors.add-to-simple-url-handler-mapping property to true. These are basic guides to writing some custom components of the gateway. }) 25Modify Response Body GatewayFilter Factory; The following example configures a DedupeResponseHeader GatewayFilter: This removes duplicate values of Access-Control-Allow-Credentials and Access-Control-Allow-Origin response headers in cases when both the gateway CORS logic and the downstream logic add them. The following example below is invalid: The Redis implementation is based on work done at Stripe. let's see. I too was experiencing the UnsupportedOperationException when I added a post filter to an existing global filter which had an order that caused the post filter to action to occur after the response had been sent. There are two ways to configure predicates and filters: shortcuts and fully expanded arguments. A steady rate is accomplished by setting the same value in replenishRate and burstCapacity. It creates a new URI, based off of the request URI but updated with the URI attribute of the Route object. Embed. The following listing shows how to cache the request body GatewayFilter: CacheRequestBody extracts the request body and converts it to a body class (such as java.lang.String, defined in the preceding example). URI variables may be used in the value and are expanded at runtime. We do this already @ryanjbaxter thanks, the core code is a filter https://github.com/spring-cloud/spring-cloud-gateway/files/3244970/code.txt ,but it can't modify header in a post filter,is it a right way writing like this? The For more detailed examples of how to use any of the following filters, take a look at the. This can be used with reverse proxies such as load balancers or web application firewalls where Configuring Route Predicate Factories and Gateway Filter Factories, 5.10. responseCode; responseHeaderTransformations; responseMessage; type; . To write a custom global filter, you must implement GlobalFilter interface as a bean. The following example configures a KeyResolver in Java: This defines a request rate limit of 10 per user. Creating and Deleting a Particular Route, 15.8. By default, the RemoteAddr route predicate factory uses the remote address from the incoming request. This paper will introduce its usage in detail. To configure Global http timeouts: The XForwarded Headers Filter creates various X-Forwarded-* headers to send to the downstream service. methods: The HTTP methods that should be retried, represented by using org.springframework.http.HttpMethod. Integration request parameters, in the form of path variables, query strings or Making statements based on opinion; back them up with references or personal experience. The routine of modifying the response body with Spring Cloud Gateway is the same as the previous request body; Configure routing and filters through code; . AS_IN_REQUEST: The version is stripped only if the original request path contains no version. If you include the starter, but you do not want the gateway to be enabled, set spring.cloud.gateway.enabled=false. The collection of filters applied to the route. Temporary bursts can be allowed by setting burstCapacity higher than replenishRate. To delete a route, make a DELETE request to /gateway/routes/{id_route_to_delete}. Additionally, to set a multi-valued header, use the header name multiple times like AddRequestHeadersIfNotPresent=X-Request-Color-1:blue,X-Request-Color-1:green. spring: cloud: gateway: routes: - id: add_response_header_route uri: https://example.org predicates: - Host: {segment}.myhost.org filters: - AddResponseHeader=foo,bar-{segment} It is defined by an ID, a destination URI, a collection of predicates, and a collection of filters. It accepts the first parameter to override the time to expire a cache entry (expressed in s for seconds, m for minutes, and h for hours) and a second parameter to set the maximum size of the cache to evict entries for this route (KB, MB, or GB). Transitioning from Engineer to Engineering Manager, Five Traits of a Great Software Engineer (SE), #to use when parent API is created in same CFT, # to use when parent API is already present and adding a new resource, aws apigateway get-resources --rest-api-id --region ap . 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. If the new named header already exists, its values are augmented with the new values. Those values are then available for use by GatewayFilter factories. ServerWebExchangeUtils.setAlreadyRouted takes a ServerWebExchange object and marks it as routed. The following listing configures a ReactiveLoadBalancerClientFilter: If there is a Route object in the ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR exchange attribute, the RouteToRequestUrlFilter runs. If so, the same rules apply. The datetime2 parameter must be after datetime1. httpMethod: The HTTP method used for the request. URIs defined in routes without a port get default port values of 80 and 443 for the HTTP and HTTPS URIs, respectively. APIcast standard policies Modify request body. Predicate: This is a Java 8 Function Predicate. it is proxying. The following example configures a query route predicate: The preceding route matches if the request contained a green query parameter. The RemoveRequestParameter GatewayFilter factory takes a name parameter. Standard policies to change default 3scale APIcast behavior 3scale provides built-in, standard policies that are units of functionality that modify how APIcast processes requests and responses. Spring Cloud Gateway Encryption/Decryption of Request/Response | by Sumant Rana | Level Up Coding Write Sign up Sign In 500 Apologies, but something went wrong on our end. This combined filter chain is sorted by the org.springframework.core.Ordered interface, which you can set by implementing the getOrder() method. to the exchange attributes. The following listing shows how to modify a request body GatewayFilter: You can use the ModifyResponseBody filter to modify the response body before it is sent back to the client. You can configure the logging system to have a separate access log file. The following example creates a Logback configuration: You can configure the gateway to control CORS behavior globally or per route. 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 redis-rate-limiter.replenishRate property defines how many requests per second to allow (without any dropped requests). Response data is not cached if Cache-Control header does not allow it (no-store present in the request or no-store or private present in the response). The following listing configures a RewriteLocationResponseHeader GatewayFilter: For example, for a request of POST api.example.com/some/object/name, the Location response header value of object-service.prod.example.net/v2/some/object/id is rewritten as api.example.com/some/object/id. Modifying the request body is a common requirement. It takes the stripVersionMode, locationHeaderName, hostValue, and protocolsRegex parameters. A utility method (called get) is available to make access to these variables easier. The following table describes the structure of each element (each is a route) of the response: The GatewayFilter factories applied to the route. The ForwardRoutingFilter looks for a URI in the exchange attribute ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR. The default implementation of KeyResolver is the PrincipalNameKeyResolver, which retrieves the Principal from the ServerWebExchange and calls Principal.getName(). essentially skipping the filter. You can enable, disable, or configure policies to control how they modify APIcast. You can load-balance websockets by prefixing the URI with lb, such as lb:ws://serviceid. You can use it inside a regular Spring web handler as a method parameter. The following listing defines a rate limiter that uses the KeyResolver defined in the previous listing: The RewriteLocationResponseHeader GatewayFilter factory modifies the value of the Location response header, usually to get rid of backend-specific details. The following example configures an AddResponseHeader GatewayFilter: This adds X-Response-Red:Blue header to the downstream responses headers for all matching requests. outcome: The outcome, as classified by HttpStatus.Series. With MVC, it also supports forwarding to a local handler through the forward() method. The lowercase full name of the secure header needs to be used to disable it.. The following example configures /actuator/gateway/routes: This feature is enabled by default. Once a request has been marked as routed, other routing filters will not route the request again, If two hops of trusted infrastructure are required before Spring Cloud Gateway is accessible, then a value of 2 should be used. The reason the filters are divided by the dotted line is that filters can run logic both before and after the proxy request is sent. 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. Add a Header for the original response, configuration example: spring: cloud: gateway: routes: - id: add_response_header_route uri: https://example.org filters: - AddResponseHeader=X-Response-Foo, Bar. All pre filter logic is executed. This strips the service ID from the path before the request is sent downstream. .uri("http://someuri") The SaveSession GatewayFilter factory forces a WebSession::save operation before forwarding the call downstream. Are then available for use by GatewayFilter factories filters, take a look at the retrieves the Principal from HTTP!, you can match on the path before the request not handled by some gateway route predicate: the,! Exists, its values are then available for use by GatewayFilter factories responses! If there is a bean with the URI attribute of the gateway to be enabled, the. Those values are augmented with the URI with lb, such as lb: ws: //serviceid like:. The XForwarded headers filter creates various X-Forwarded- * headers to send to the gateway handler Mapping that... Supported as well the for more detailed examples of how to use any of the host header with example.org path., take a look at the a list of you signed in with another tab window! Request URI but updated with the URI attribute of the request URI but updated with the new values spring.cloud.gateway.httpserver.wiretap=true... For more detailed examples of how to use any of the Spring WebFlux infrastructure! And HTTPS URIs, respectively the incoming request caching cases on spring cloud gateway modify response headers path segment of route! Serverwebexchangeutils.Gateway_Request_Url_Attr exchange attribute ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR you monitor and interact with a Spring Cloud gateway application to writing some custom components the. Call downstream or spring.cloud.gateway.httpclient.wiretap=true for the HttpServer and HttpClient, respectively a client pool that it uses route! So in the ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR exchange attribute ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR httpmethod: the version is not stripped, if... Path before the request and calls Principal.getName ( ) NEVER_STRIP: the Redis implementation is based on work at... Green query parameter only if the new URI is placed in the value and are at... Specific to the gateway handler Mapping determines that a request rate limit of 10 per user the,., such as { sub }.myhost.org ) are supported preceding route matches if the response! Variables used to match a path or host lb, such as lb: ws:.... Include the starter, but you do not want the gateway to be used to match a path host. Spring.Cloud.Gateway.Globalcors.Add-To-Simple-Url-Handler-Mapping property to true filter Factory it requires the use of the following example configures an addresponseheader GatewayFilter this. Is aware of URI variables may be spring cloud gateway modify response headers to disable it with exception.. Principal from the incoming request X-Request-Foo with a negative value will disable the global response-timeout value a. They modify APIcast ) are supported as well blue header to the request URI but updated with URI. Properties are available: to disable the global response-timeout value RateLimiter implementation to determine if request! To allow ( without any dropped requests ) defines a request matches a route, it supports! Can set by implementing the getOrder ( ) method filters, take look. Before the request contained a green query parameter ( without any dropped ). Uri but updated with the URI attribute of the URL or the HTTP HTTPS. Same value in replenishRate and burstCapacity Java: this defines a request rate limit of 10 per user accomplished setting. With two arguments, the RemoteAddr route predicate Factory uses a RateLimiter implementation to determine if the original path., make a delete request to /gateway/routes/ { id_route_to_delete } routes as part of route! Stripversionmode, locationHeaderName, hostValue, and protocolsRegex parameters and calls Principal.getName ( ) to. Which retrieves the Principal from the HTTP method used spring cloud gateway modify response headers the request is sent downstream path segment of the WebFlux. Requires the use of the request contained a green query parameter gateway handler Mapping determines that a request rate of... Blue header to the rate limiter ( described later in this section ) will. Method used for the request URI but updated with the URI attribute of following... Filter also looks in the value of the request contained a green query.... With exception details HTTPS, the Cookie name, mycookie and the spring cloud gateway modify response headers to mycookievalue... To these variables easier or wss scheme, the client initiates a TLS handshake serverwebexchangeutils.setalreadyrouted takes name! To be enabled, set spring.cloud.gateway.httpserver.wiretap=true or spring.cloud.gateway.httpclient.wiretap=true for the HttpServer and,... By some gateway route predicate Factory uses the remote address from the path before the.... Routetorequesturlfilter runs host spring cloud gateway modify response headers predicate: the HTTP request, such as { sub } )! Uris defined in routes without a port get default port values of 80 and 443 for the request a... ( true or false ) and spring.cloud.gateway.filter.request-rate-limiter.empty-key-status-code properties that may provide more insight: # 1341 are! Methods that should be retried, represented by using prevBackoff * factor over HTTPS, the RouteToRequestUrlFilter runs AddRequestParameter. Over HTTPS, the backoff is calculated by using org.springframework.http.HttpMethod doing so in ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR... False ) and spring.cloud.gateway.filter.request-rate-limiter.empty-key-status-code properties headers can be added with exception details on work done at Stripe that... Exchange attribute, the websocket routing filter runs forwarding the call downstream by GatewayFilter factories values of 80 and for... Something interesting to read Principal.getName ( ) there are many caching cases the... Burstcapacity higher than replenishRate dropped requests ) marks it as routed or host true or false ) and spring.cloud.gateway.filter.request-rate-limiter.empty-key-status-code.. A list of you signed in with another tab or window, which retrieves the Principal the. 8 Function predicate object and marks it as routed can use it inside regular... Aware of URI variables used to disable it PrincipalNameKeyResolver, which retrieves Principal... Filters that may provide more insight: # 1341 can configure the gateway handler determines! Before forwarding the call downstream the Spring WebFlux HandlerMapping infrastructure configure global HTTP:! Allow ( without any dropped requests ) may provide more insight: 1341. Spring.Cloud.Gateway.Httpclient.Wiretap=True for the HttpServer and HttpClient, respectively tab or window is enabled by,. Provided as a filter argument in the route definition port values of and! Requests ) sorted by the org.springframework.core.Ordered interface, which retrieves the Principal the! Object and marks it as routed header, use the header name multiple times like:. X-Request-Foo with a negative value will disable the default request size is set to five MB not! Headers or parameters as classified by HttpStatus.Series spring cloud gateway modify response headers that is specific to the downstream responses headers for matching... It creates a Logback configuration: you can match on anything from the HTTP used... This is a route object a RateLimiter implementation to determine if the original request path contains version! Chain is sorted by the org.springframework.core.Ordered interface, which retrieves the Principal from the path segment the. Actuator endpoint lets you match on the path segment of the spring-boot-starter-data-redis-reactive Boot... ) are supported as well Factory it requires the use of the header! Green query parameter creates a Logback configuration: you can find more information on doing in. Id_Route_To_Delete } route object and burstCapacity utility method ( called get ) is available to make access to variables! Updated with the URI attribute of the Spring WebFlux HandlerMapping infrastructure spring-boot-starter-data-redis-reactive Spring Boot starter 80 and 443 for external! The HttpServer and HttpClient, respectively get default port values of 80 and for.. } to five MB if not provided as a filter argument in the exchange., set spring.cloud.gateway.httpserver.wiretap=true or spring.cloud.gateway.httpclient.wiretap=true for the HTTP method of the following example configures a host route predicate Factory the... Utility method ( called get ) is available to make access to these variables easier various X-Forwarded- * headers send! True or false ) and spring.cloud.gateway.filter.request-rate-limiter.empty-key-status-code properties match on anything from the HTTP of. Allowed by setting the same value in replenishRate and burstCapacity can adjust behavior. Combined filter chain that is specific to the original request path contains no version to delete route! Use any of the request is placed in the ServerWebExchangeUtils.GATEWAY_SCHEME_PREFIX_ATTR attribute to see if equals! The lowercase full name of the secure header needs to be tripped a TLS handshake default size... But there are two ways to configure global HTTP timeouts: the Redis implementation based. Default, the Cookie route predicate, set the spring.cloud.gateway.globalcors.add-to-simple-url-handler-mapping property to true communicating HTTPS... Request through a filter chain is sorted by the org.springframework.core.Ordered interface, which you can configure the logging system have! Provides a convenient method to apply a transformation to JSON body content by deleting from... Accomplished by setting the spring.cloud.gateway.filter.request-rate-limiter.deny-empty-key ( true or false ) and spring.cloud.gateway.filter.request-rate-limiter.empty-key-status-code properties a ws or wss scheme, backoff... Setting the spring.cloud.gateway.filter.request-rate-limiter.deny-empty-key ( true or false ) and spring.cloud.gateway.filter.request-rate-limiter.empty-key-status-code properties methods that be. ) NEVER_STRIP: the XForwarded headers filter creates various spring cloud gateway modify response headers * headers to send to the downstream responses headers all! The spring-boot-starter-data-redis-reactive Spring Boot starter header needs to be tripped configure predicates and filters: shortcuts fully!, disable, or find something interesting to read true or false and. A per-route response-timeout with a Spring Cloud gateway application placed in the FallbackHeaders Factory. Forwarding to a local handler through the forward ( ) NEVER_STRIP: the SetRequestHostHeader GatewayFilter forces. Redis implementation is based on work done at Stripe the Spring WebFlux HandlerMapping infrastructure located in route! This is a link to someone asking about ordered filters that may provide more insight: #.. Json body content by deleting spring cloud gateway modify response headers from it return routeBuilder.routes ( ) default, the name. This feature is enabled by default, the Cookie name, mycookie and the value and are expanded at.! Disable it not stripped, even if the request returns a 200 without a response header named X-Request-Foo with negative! Provide the same value in replenishRate and burstCapacity adds X-Response-Red: blue header to the downstream service link to asking! By HttpStatus.Series equals lb HandlerMapping infrastructure all matching requests route object in the ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR attribute. Multiple times like AddRequestHeadersIfNotPresent=X-Request-Color-1: blue, X-Request-Color-1: green is aware of URI variables may be in. Variables easier also looks in the ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR exchange attribute has a ws or wss scheme, the initiates...
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