Module sp_io::offchain

Interface that provides functions to access the offchain functionality.

These functions are being made available to the runtime and are called by the runtime.

Structs

• HostFunctions
  Provides implementations for the extern host functions.

Functions

• http_request_add_header
  Append header to the request.
• http_request_start
  Initiates a http request given HTTP verb and the URL.
• http_request_write_body
  Write a chunk of request body.
• http_response_headers
  Read all response headers.
• http_response_read_body
  Read a chunk of body response to given buffer.
• http_response_wait
  Block and wait for the responses for given requests.
• is_validator
  Returns if the local node is a potential validator.
• local_storage_clear
  Remove a value from the local storage.
• local_storage_compare_and_set
  Sets a value in the local storage if it matches current value.
• local_storage_get
  Gets a value from the local storage.
• local_storage_set
  Sets a value in the local storage.
• network_state
  Returns information about the local node’s network state.
• random_seed
  Returns a random seed.
• set_authorized_nodes
  Set the authorized nodes and authorized_only flag.
• sleep_until
  Pause the execution until deadline is reached.
• submit_transaction
  Submit an encoded transaction to the pool.
• timestamp
  Returns current UNIX timestamp (in millis)