Struct Backend

pub struct Backend {

    pub address: Option<String>,
    pub auto_loadbalance: Option<bool>,
    pub between_bytes_timeout: Option<i32>,
    pub client_cert: Option<String>,
    pub comment: Option<String>,
    pub connect_timeout: Option<i32>,
    pub first_byte_timeout: Option<i32>,
    pub healthcheck: Option<String>,
    pub hostname: Option<String>,
    pub ipv4: Option<String>,
    pub ipv6: Option<String>,
    pub keepalive_time: Option<i32>,
    pub max_conn: Option<i32>,
    pub max_tls_version: Option<String>,
    pub min_tls_version: Option<String>,
    pub name: Option<String>,
    pub override_host: Option<String>,
    pub port: Option<i32>,
    pub request_condition: Option<String>,
    pub share_key: Option<String>,
    pub shield: Option<String>,
    pub ssl_ca_cert: Option<String>,
    pub ssl_cert_hostname: Option<String>,
    pub ssl_check_cert: Option<bool>,
    pub ssl_ciphers: Option<String>,
    pub ssl_client_cert: Option<String>,
    pub ssl_client_key: Option<String>,
    pub ssl_hostname: Option<String>,
    pub ssl_sni_hostname: Option<String>,
    pub tcp_keepalive_enable: Option<bool>,
    pub tcp_keepalive_interval: Option<i32>,
    pub tcp_keepalive_probes: Option<i32>,
    pub tcp_keepalive_time: Option<i32>,
    pub use_ssl: Option<bool>,
    pub weight: Option<i32>,
}

Fields

address: Option<String>

A hostname, IPv4, or IPv6 address for the backend. This is the preferred way to specify the location of your backend.

auto_loadbalance: Option<bool>

Whether or not this backend should be automatically load balanced. If true, all backends with this setting that don’t have a request_condition will be selected based on their weight.

between_bytes_timeout: Option<i32>

Maximum duration in milliseconds that Fastly will wait while receiving no data on a download from a backend. If exceeded, the response received so far will be considered complete and the fetch will end. May be set at runtime using bereq.between_bytes_timeout.

client_cert: Option<String>

Unused.

comment: Option<String>

A freeform descriptive note.

connect_timeout: Option<i32>

Maximum duration in milliseconds to wait for a connection to this backend to be established. If exceeded, the connection is aborted and a synthetic 503 response will be presented instead. May be set at runtime using bereq.connect_timeout.

first_byte_timeout: Option<i32>

Maximum duration in milliseconds to wait for the server response to begin after a TCP connection is established and the request has been sent. If exceeded, the connection is aborted and a synthetic 503 response will be presented instead. May be set at runtime using bereq.first_byte_timeout.

healthcheck: Option<String>

The name of the healthcheck to use with this backend.

hostname: Option<String>

The hostname of the backend. May be used as an alternative to address to set the backend location.

ipv4: Option<String>

IPv4 address of the backend. May be used as an alternative to address to set the backend location.

ipv6: Option<String>

IPv6 address of the backend. May be used as an alternative to address to set the backend location.

keepalive_time: Option<i32>

How long in seconds to keep a persistent connection to the backend between requests.

max_conn: Option<i32>

Maximum number of concurrent connections this backend will accept.

max_tls_version: Option<String>

Maximum allowed TLS version on SSL connections to this backend. If your backend server is not able to negotiate a connection meeting this constraint, a synthetic 503 error response will be generated.

min_tls_version: Option<String>

Minimum allowed TLS version on SSL connections to this backend. If your backend server is not able to negotiate a connection meeting this constraint, a synthetic 503 error response will be generated.

name: Option<String>

The name of the backend.

override_host: Option<String>

If set, will replace the client-supplied HTTP Host header on connections to this backend. Applied after VCL has been processed, so this setting will take precedence over changing bereq.http.Host in VCL.

port: Option<i32>

Port on which the backend server is listening for connections from Fastly. Setting port to 80 or 443 will also set use_ssl automatically (to false and true respectively), unless explicitly overridden by setting use_ssl in the same request.

request_condition: Option<String>

Name of a Condition, which if satisfied, will select this backend during a request. If set, will override any auto_loadbalance setting. By default, the first backend added to a service is selected for all requests.

share_key: Option<String>

Value that when shared across backends will enable those backends to share the same health check.

shield: Option<String>

Identifier of the POP to use as a shield.

ssl_ca_cert: Option<String>

CA certificate attached to origin.

ssl_cert_hostname: Option<String>

Overrides ssl_hostname, but only for cert verification. Does not affect SNI at all.

ssl_check_cert: Option<bool>

Be strict on checking SSL certs.

ssl_ciphers: Option<String>

List of OpenSSL ciphers to support for connections to this origin. If your backend server is not able to negotiate a connection meeting this constraint, a synthetic 503 error response will be generated.

ssl_client_cert: Option<String>

Client certificate attached to origin.

ssl_client_key: Option<String>

Client key attached to origin.

ssl_hostname: Option<String>

Use ssl_cert_hostname and ssl_sni_hostname to configure certificate validation.

ssl_sni_hostname: Option<String>

Overrides ssl_hostname, but only for SNI in the handshake. Does not affect cert validation at all.

tcp_keepalive_enable: Option<bool>

Whether to enable TCP keepalives for backend connections. Varnish defaults to using keepalives if this is unspecified.

tcp_keepalive_interval: Option<i32>

Interval in seconds between subsequent keepalive probes.

tcp_keepalive_probes: Option<i32>

Number of unacknowledged probes to send before considering the connection dead.

tcp_keepalive_time: Option<i32>

Interval in seconds between the last data packet sent and the first keepalive probe.

use_ssl: Option<bool>

Whether or not to require TLS for connections to this backend.

weight: Option<i32>

Weight used to load balance this backend against others. May be any positive integer. If auto_loadbalance is true, the chance of this backend being selected is equal to its own weight over the sum of all weights for backends that have auto_loadbalance set to true.

Implementations

impl Backend

pub fn new() -> Backend

Trait Implementations

impl Clone for Backend

fn clone(&self) -> Backend

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Backend

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Backend

fn default() -> Backend

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Backend

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Backend

fn eq(&self, other: &Backend) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Backend

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Backend