45 lines
1.5 KiB
Plaintext
45 lines
1.5 KiB
Plaintext
_section: Providers
|
|
|
|
A **Provider** is an abstraction of a connection to the
|
|
Ethereum network, providing a concise, consistent interface
|
|
to standard Ethereum node functionality.
|
|
|
|
The ethers.js library provides several options which should
|
|
cover the vast majority of use-cases, but also includes the
|
|
necessary functions and classes for sub-classing if a more
|
|
custom configuration is necessary.
|
|
|
|
Most users should be able to simply use the [[get-default-provider]].
|
|
|
|
|
|
_subsection: Default Provider @<get-default-provider>
|
|
|
|
The default provider is the safest, easiest way to begin
|
|
developing on //Ethereum//, and it is also robust enough
|
|
for use in production.
|
|
|
|
It creates a [[provider-fallback]] connected to as many backend
|
|
services as possible. When a request is made, it is sent to
|
|
multiple backends simulatenously. As responses from each backend
|
|
are returned, they are checked that they agree. Once a quorum
|
|
has been reached (i.e. enough of the backends agree), the response
|
|
is provided to your application.
|
|
|
|
This ensures that if a backend has become out-of-sync, or if it
|
|
has been compromised that its responses are dropped in favor of
|
|
responses that match the majority.
|
|
|
|
_property: ethers.getDefaultProvider([ network ]) => [[provider]]
|
|
Returns a new Provider, backed by multiple services, connected
|
|
to //network//. Is no //network// is provided, **homestead**
|
|
(i.e. mainnet) is used.
|
|
|
|
_subsection: Provider Documentation
|
|
|
|
_toc:
|
|
provider
|
|
jsonrpc-provider
|
|
api-providers
|
|
other
|
|
types
|