XffHeaderProcessingMode Enum
Processing mode of the X-Forwarded-For header in the HTTP request before the Application Load Balancer sends the request to the target.
Example
ts
declare const vpc: ec2.Vpc;
const lb = new elbv2.ApplicationLoadBalancer(this, 'LB', {
vpc,
internetFacing: true,
// Whether HTTP/2 is enabled
http2Enabled: false,
// The idle timeout value, in seconds
idleTimeout: Duration.seconds(1000),
// Whether HTTP headers with header fields that are not valid
// are removed by the load balancer (true), or routed to targets
dropInvalidHeaderFields: true,
// How the load balancer handles requests that might
// pose a security risk to your application
desyncMitigationMode: elbv2.DesyncMitigationMode.DEFENSIVE,
// The type of IP addresses to use.
ipAddressType: elbv2.IpAddressType.IPV4,
// The duration of client keep-alive connections
clientKeepAlive: Duration.seconds(500),
// Whether cross-zone load balancing is enabled.
crossZoneEnabled: true,
// Whether the load balancer blocks traffic through the Internet Gateway (IGW).
denyAllIgwTraffic: false,
// Whether to preserve host header in the request to the target
preserveHostHeader: true,
// Whether to add the TLS information header to the request
xAmznTlsVersionAndCipherSuiteHeaders: true,
// Whether the X-Forwarded-For header should preserve the source port
preserveXffClientPort: true,
// The processing mode for X-Forwarded-For headers
xffHeaderProcessingMode: elbv2.XffHeaderProcessingMode.APPEND,
// Whether to allow a load balancer to route requests to targets if it is unable to forward the request to AWS WAF.
wafFailOpen: true,
});
Members
| Member | Description |
|---|---|
APPEND | Application Load Balancer adds the client IP address (of the last hop) to the X-Forwarded-For header in the HTTP request before it sends it to targets. |
PRESERVE | Application Load Balancer preserves the X-Forwarded-For header in the HTTP request, and sends it to targets without any change. |
REMOVE | Application Load Balancer removes the X-Forwarded-For header in the HTTP request before it sends it to targets. |
Referenced by
ApplicationLoadBalancerProps.xffHeaderProcessingModexff_header_processing_modexffHeaderProcessingModeXffHeaderProcessingModeXffHeaderProcessingMode