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socket_server

Available in: Self-Managed

Creates a server that receives a stream of messages over a TCP, UDP or Unix socket.

inputs:
  label: ""
  socket_server:
    network: "" # No default (required)
    address: "" # No default (required)
    address_cache: "" # No default (optional)
    tls:
      cert_file: "" # No default (optional)
      key_file: "" # No default (optional)
      self_signed: false
      client_auth: no
    auto_replay_nacks: true
    scanner:
      lines: {}

Fields

address

The address to listen from.

Type: string

# Examples:
address: /tmp/benthos.sock

# ---

address: 0.0.0.0:6000

address_cache

An optional cache within which this input should write it’s bound address once known. The key of the cache item containing the address will be the label of the component suffixed with _address (e.g. foo_address), or socket_server_address when a label has not been provided. This is useful in situations where the address is dynamically allocated by the server (127.0.0.1:0) and you want to store the allocated address somewhere for reference by other systems and components.

Requires version 4.25.0 or later.

Type: string

auto_replay_nacks

Whether messages that are rejected (nacked) at the output level should be automatically replayed indefinitely, eventually resulting in back pressure if the cause of the rejections is persistent. If set to false these messages will instead be deleted. Disabling auto replays can greatly improve memory efficiency of high throughput streams as the original shape of the data can be discarded immediately upon consumption and mutation.

Type: bool

Default: true

network

A network type to accept.

Type: string

Options: unix, tcp, udp, tls, unixgram

scanner

The scanner by which the stream of bytes consumed will be broken out into individual messages. Scanners are useful for processing large sources of data without holding the entirety of it within memory. For example, the csv scanner allows you to process individual CSV rows without loading the entire CSV file in memory at once.

Requires version 4.25.0 or later.

Type: scanner

Default:

lines: {}

tcp

TCP listener socket configuration.

Type: object

tcp.reuse_addr

Enable SO_REUSEADDR, allowing binding to ports in TIME_WAIT state. Useful for graceful restarts and config reloads where the server needs to rebind to the same port immediately after shutdown.

Type: bool

Default: false

tcp.reuse_port

Enable SO_REUSEPORT, allowing multiple sockets to bind to the same port for load balancing across multiple processes/threads.

Type: bool

Default: false

tls

TLS specific configuration, valid when the network is set to tls.

Type: object

tls.cert_file

PEM encoded certificate for use with TLS.

Type: string

tls.client_auth

Specifies how client authentication is handled when using TLS.

Requires version 4.44.1 or later.

Type: string

Default: no

Option Summary

no

client certificate is not requested nor required.

request

will request client certificate, not require it.

require_any

will accept any client certificate, even if not valid.

require_valid

requires a valid client certificate.

verify_if_given

will verify a certificate, if one is sent by the client.

tls.key_file

PEM encoded private key for use with TLS.

Type: string

tls.self_signed

Whether to generate self signed certificates.

Type: bool

Default: false