Perform the given default action on incoming requests.

This allows full control of the default action of the load balancer,
including Action chaining, fixed responses and redirect responses. See
the `ListenerAction` class for all options.

It's possible to add routing conditions to the Action added in this way.
At least one Action must be added without conditions (which becomes the
default Action).

addAction

Add one or more certificates to this listener.

After the first certificate, this creates ApplicationListenerCertificates
resources since cloudformation requires the certificates array on the
listener resource to have a length of 1.

addCertificates

Load balance incoming requests to the given target groups.

All target groups will be load balanced to with equal weight and without
stickiness. For a more complex configuration than that, use `addAction()`.

It's possible to add routing conditions to the TargetGroups added in this
way. At least one TargetGroup must be added without conditions (which will
become the default Action for this listener).

addTargetGroups

Load balance incoming requests to the given load balancing targets.

This method implicitly creates an ApplicationTargetGroup for the targets
involved, and a 'forward' action to route traffic to the given TargetGroup.

If you want more control over the precise setup, create the TargetGroup
and use `addAction` yourself.

It's possible to add conditions to the targets added in this way. At least
one set of targets must be added without conditions.

addTargets

Register that a connectable that has been added to this load balancer.

Don't call this directly. It is called by ApplicationTargetGroup.

registerConnectable

ApplicationListener

The load balancer to attach this listener to.

loadBalancer

Certificate list of ACM cert ARNs.

You must provide exactly one certificate if the listener protocol is HTTPS or TLS.

certificates

Default action to take for requests to this listener.

This allows full control of the default action of the load balancer,
including Action chaining, fixed responses and redirect responses.

See the `ListenerAction` class for all options.

Cannot be specified together with `defaultTargetGroups`.

defaultAction

Default target groups to load balance to.

All target groups will be load balanced to with equal weight and without
stickiness. For a more complex configuration than that, use
either `defaultAction` or `addAction()`.

Cannot be specified together with `defaultAction`.

defaultTargetGroups

The mutual authentication configuration information.

mutualAuthentication

Allow anyone to connect to the load balancer on the listener port.

If this is specified, the load balancer will be opened up to anyone who can reach it.
For internal load balancers this is anyone in the same VPC. For public load
balancers, this is anyone on the internet.

If you want to be more selective about who can access this load
balancer, set this to `false` and use the listener's `connections`
object to selectively grant access to the load balancer on the listener port.

open

The port on which the listener listens for requests.

port

protocol

The security policy that defines which ciphers and protocols are supported.

sslPolicy

ApplicationListenerCertificate

listener

Certificates to attach.

Duplicates are not allowed.

Add a non-standard condition to this rule.

addCondition

Configure the action to perform for this rule.

configureAction

ApplicationListenerRule

Priority of the rule.

The rule with the lowest priority will be used for every request.

Priorities must be unique.

priority

Action to perform when requests are received.

Only one of `action`, `fixedResponse`, `redirectResponse` or `targetGroups` can be specified.

action

conditions

Target groups to forward requests to.

Only one of `action`, `fixedResponse`, `redirectResponse` or `targetGroups` can be specified.

Implies a `forward` action.

targetGroups

Add a new listener to this load balancer.

addListener

Add a redirection listener to this load balancer.

addRedirect

Add a security group to this load balancer.

addSecurityGroup

Enable access logging for this load balancer.

A region must be specified on the stack containing the load balancer; you cannot enable logging on
environment-agnostic stacks. See https://docs.aws.amazon.com/cdk/latest/guide/environments.html

logAccessLogs

Enable connection logging for this load balancer.

A region must be specified on the stack containing the load balancer; you cannot enable logging on
environment-agnostic stacks.

logConnectionLogs

Return the given named metric for this Application Load Balancer.

metric

The total number of concurrent TCP connections active from clients to the load balancer and from the load balancer to targets.

metricActiveConnectionCount

The number of TLS connections initiated by the client that did not establish a session with the load balancer.

Possible causes include a
mismatch of ciphers or protocols.

metricClientTlsNegotiationErrorCount

The number of load balancer capacity units (LCU) used by your load balancer.

metricConsumedLCUs

The number of user authentications that could not be completed.

Because an authenticate action was misconfigured, the load balancer
couldn't establish a connection with the IdP, or the load balancer
couldn't complete the authentication flow due to an internal error.

metricElbAuthError

The number of user authentications that could not be completed because the IdP denied access to the user or an authorization code was used more than once.

metricElbAuthFailure

The time elapsed, in milliseconds, to query the IdP for the ID token and user info.

If one or more of these operations fail, this is the time to failure.

metricElbAuthLatency

The number of authenticate actions that were successful.

This metric is incremented at the end of the authentication workflow,
after the load balancer has retrieved the user claims from the IdP.

metricElbAuthSuccess

The number of HTTP 3xx/4xx/5xx codes that originate from the load balancer.

This does not include any response codes generated by the targets.

metricHttpCodeElb

The number of HTTP 2xx/3xx/4xx/5xx response codes generated by all targets in the load balancer.

This does not include any response codes generated by the load balancer.

metricHttpCodeTarget

The number of fixed-response actions that were successful.

metricHttpFixedResponseCount

The number of redirect actions that were successful.

metricHttpRedirectCount

The number of redirect actions that couldn't be completed because the URL in the response location header is larger than 8K.

metricHttpRedirectUrlLimitExceededCount

The total number of bytes processed by the load balancer over IPv6.

metricIpv6ProcessedBytes

The number of IPv6 requests received by the load balancer.

metricIpv6RequestCount

The total number of new TCP connections established from clients to the load balancer and from the load balancer to targets.

metricNewConnectionCount

The total number of bytes processed by the load balancer over IPv4 and IPv6.

metricProcessedBytes

The number of connections that were rejected because the load balancer had reached its maximum number of connections.

metricRejectedConnectionCount

The number of requests processed over IPv4 and IPv6.

This count includes only the requests with a response generated by a target of the load balancer.

metricRequestCount

The number of rules processed by the load balancer given a request rate averaged over an hour.

metricRuleEvaluations

The number of connections that were not successfully established between the load balancer and target.

metricTargetConnectionErrorCount

The time elapsed, in seconds, after the request leaves the load balancer until a response from the target is received.

metricTargetResponseTime

The number of TLS connections initiated by the load balancer that did not establish a session with the target.

Possible causes include a mismatch of ciphers or protocols.

metricTargetTLSNegotiationErrorCount

ApplicationLoadBalancer

The client keep alive duration.

The valid range is 60 to 604800 seconds (1 minute to 7 days).

clientKeepAlive

Determines how the load balancer handles requests that might pose a security risk to your application.

desyncMitigationMode

Indicates whether HTTP headers with invalid header fields are removed by the load balancer (true) or routed to targets (false).

dropInvalidHeaderFields

http2Enabled

The load balancer idle timeout, in seconds.

idleTimeout

ipAddressType

Indicates whether the Application Load Balancer should preserve the host header in the HTTP request and send it to the target without any change.

preserveHostHeader

Indicates whether the X-Forwarded-For header should preserve the source port that the client used to connect to the load balancer.

preserveXffClientPort

Security group to associate with this load balancer.

securityGroup

Indicates whether to allow a WAF-enabled load balancer to route requests to targets if it is unable to forward the request to AWS WAF.

wafFailOpen

Indicates whether the two headers (x-amzn-tls-version and x-amzn-tls-cipher-suite), which contain information about the negotiated TLS version and cipher suite, are added to the client request before sending it to the target.

The x-amzn-tls-version header has information about the TLS protocol version negotiated with the client,
and the x-amzn-tls-cipher-suite header has information about the cipher suite negotiated with the client.

Both headers are in OpenSSL format.

xAmznTlsVersionAndCipherSuiteHeaders

Enables you to modify, preserve, or remove the X-Forwarded-For header in the HTTP request before the Application Load Balancer sends the request to the target.

xffHeaderProcessingMode

The VPC network to place the load balancer in.

Indicates whether cross-zone load balancing is enabled.

crossZoneEnabled

Indicates whether deletion protection is enabled.

deletionProtection

Indicates whether the load balancer blocks traffic through the Internet Gateway (IGW).

denyAllIgwTraffic

Whether the load balancer has an internet-routable address.

internetFacing

loadBalancerName

The minimum capacity (LCU) for a load balancer.

minimumCapacityUnit

Which subnets place the load balancer in.

vpcSubnets

Add a load balancing target to this target group.

addTarget

Enable sticky routing via a cookie to members of this target group.

Note: If the `cookieName` parameter is set, application-based stickiness will be applied,
otherwise it defaults to duration-based stickiness attributes (`lb_cookie`).

enableCookieStickiness

Return the given named metric for this Application Load Balancer Target Group.

Returns the metric for this target group from the point of view of the first
load balancer load balancing to it. If you have multiple load balancers load
sending traffic to the same target group, you will have to override the dimensions
on this metric.

The number of healthy hosts in the target group.

metricHealthyHostCount

The number of HTTP 2xx/3xx/4xx/5xx response codes generated by all targets in this target group.

This does not include any response codes generated by the load balancer.

The number of IPv6 requests received by the target group.

The average number of requests received by each target in a target group.

The only valid statistic is Sum. Note that this represents the average not the sum.

metricRequestCountPerTarget

The number of unhealthy hosts in the target group.

metricUnhealthyHostCount

Register a connectable as a member of this target group.

Don't call this directly. It will be called by load balancing targets.

Register a listener that is load balancing to this target group.

Don't call this directly. It will be called by listeners.

registerListener

ApplicationTargetGroup

Indicates whether anomaly mitigation is enabled.

Only available when `loadBalancingAlgorithmType` is `TargetGroupLoadBalancingAlgorithmType.WEIGHTED_RANDOM`

enableAnomalyMitigation

The load balancing algorithm to select targets for routing requests.

loadBalancingAlgorithmType

Indicates whether the target group supports multi-value headers.

If the value is true, the request and response headers exchanged between
the load balancer and the Lambda function include arrays of values or strings.

Only applicable for Lambda targets.

multiValueHeadersEnabled

The port on which the target receives traffic.

This is not applicable for Lambda targets.

The protocol used for communication with the target.

This is not applicable for Lambda targets.

protocolVersion

The time period during which the load balancer sends a newly registered target a linearly increasing share of the traffic to the target group.

The range is 30-900 seconds (15 minutes).

slowStart

The stickiness cookie expiration period.

Setting this value enables load balancer stickiness.

After this period, the cookie is considered stale. The minimum value is
1 second and the maximum value is 7 days (604800 seconds).

stickinessCookieDuration

The name of an application-based stickiness cookie.

Names that start with the following prefixes are not allowed: AWSALB, AWSALBAPP,
and AWSALBTG; they're reserved for use by the load balancer.

Note: `stickinessCookieName` parameter depends on the presence of `stickinessCookieDuration` parameter.
If `stickinessCookieDuration` is not set, `stickinessCookieName` will be omitted.

stickinessCookieName

The targets to add to this target group.

Can be `Instance`, `IPAddress`, or any self-registering load balancing
target. If you use either `Instance` or `IPAddress` as targets, all
target must be of the same type.

targets

Indicates whether cross zone load balancing is enabled.

The amount of time for Elastic Load Balancing to wait before deregistering a target.

The range is 0-3600 seconds.

deregistrationDelay

healthCheck

The type of IP addresses of the targets registered with the target group.

targetGroupHealth

The name of the target group.

This name must be unique per region per account, can have a maximum of
32 characters, must contain only alphanumeric characters or hyphens, and
must not begin or end with a hyphen.

targetGroupName

The type of targets registered to this TargetGroup, either IP or Instance.

All targets registered into the group must be of this type. If you
register targets to the TargetGroup in the CDK app, the TargetType is
determined automatically.

targetType

The virtual private cloud (VPC).

only if `TargetType` is `Ip` or `InstanceId`

Perform the given Action on incoming requests.

This allows full control of the default Action of the load balancer,
including weighted forwarding. See the `NetworkListenerAction` class for
all options.

Add one or more certificates to this listener.

After the first certificate, this creates NetworkListenerCertificates
resources since cloudformation requires the certificates array on the
listener resource to have a length of 1.

Load balance incoming requests to the given target groups.

All target groups will be load balanced to with equal weight and without
stickiness. For a more complex configuration than that, use `addAction()`.

Load balance incoming requests to the given load balancing targets.

This method implicitly creates a NetworkTargetGroup for the targets
involved, and a 'forward' action to route traffic to the given TargetGroup.

If you want more control over the precise setup, create the TargetGroup
and use `addAction` yourself.

It's possible to add conditions to the targets added in this way. At least
one set of targets must be added without conditions.

NetworkListener

Application-Layer Protocol Negotiation (ALPN) is a TLS extension that is sent on the initial TLS handshake hello messages.

ALPN enables the application layer to negotiate which protocols should be used over a secure connection, such as HTTP/1 and HTTP/2.

Can only be specified together with Protocol TLS.

alpnPolicy

Default action to take for requests to this listener.

This allows full control of the default Action of the load balancer,
including weighted forwarding. See the `NetworkListenerAction` class for
all options.

Cannot be specified together with `defaultTargetGroups`.

Protocol for listener, expects TCP, TLS, UDP, or TCP_UDP.

tcpIdleTimeout

Return the given named metric for this Network Load Balancer.

The total number of concurrent TCP flows (or connections) from clients to targets.

This metric includes connections in the SYN_SENT and ESTABLISHED states.
TCP connections are not terminated at the load balancer, so a client
opening a TCP connection to a target counts as a single flow.

metricActiveFlowCount

The total number of new TCP flows (or connections) established from clients to targets in the time period.

metricNewFlowCount

The total number of bytes processed by the load balancer, including TCP/IP headers.

The total number of reset (RST) packets sent from a client to a target.

These resets are generated by the client and forwarded by the load balancer.

metricTcpClientResetCount

The total number of reset (RST) packets generated by the load balancer.

Elastic Load Balancing V2

L2 Constructs10

ApplicationListener

ApplicationListenerCertificate

ApplicationListenerRule

ApplicationLoadBalancer

ApplicationTargetGroup

NetworkListener

NetworkLoadBalancer

NetworkTargetGroup

TrustStore

TrustStoreRevocation

L1 Constructs7

CfnListener

CfnListenerCertificate

CfnListenerRule

CfnLoadBalancer

CfnTargetGroup

CfnTrustStore

CfnTrustStoreRevocation

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