Domain Settings

FastGateway supports gateway-level domain settings for connection management and protocol configuration.

TCP Keepalive

Configure TCP keepalive to detect dead connections:

domainSettings:
  tcpKeepalive:
    probes: 3
    idleTime: "60s"
    interval: "10s"

Setting	Description
probes	Number of keepalive probes before closing
idleTime	Time before sending first keepalive probe
interval	Interval between keepalive probes

Connection Limits

Limit concurrent connections:

domainSettings:
  connection:
    connectionLimit: 10000
    bufferLimit: "32Ki"

Timeouts

Configure request and idle timeouts:

domainSettings:
  timeout:
    requestReceivedTimeout: "30s"
    idleTimeout: "300s"

Setting	Description
requestReceivedTimeout	Time to receive complete request headers
idleTimeout	Idle connection timeout

HTTP/3 Support

Enable HTTP/3 (QUIC):

domainSettings:
  http3:
    enabled: true

TLS Settings

Configure TLS options:

domainSettings:
  tls:
    minVersion: "TLSv1.2"
    maxVersion: "TLSv1.3"
    ciphers:
      - "ECDHE-ECDSA-AES256-GCM-SHA384"
      - "ECDHE-RSA-AES256-GCM-SHA384"
    alpnProtocols:
      - "h2"
      - "http/1.1"

Complete Example

domainSettings:
  tcpKeepalive:
    probes: 3
    idleTime: "60s"
    interval: "10s"
  connection:
    connectionLimit: 10000
  timeout:
    requestReceivedTimeout: "30s"
    idleTimeout: "300s"
  http3:
    enabled: true
  tls:
    minVersion: "TLSv1.2"

Notes

• Domain settings apply at the gateway/listener level
• TCP keepalive helps with load balancer health checks
• Connection limits prevent resource exhaustion
• HTTP/3 requires TLS to be configured