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p2p/simulations: improve README language (#24051)

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@ -1,7 +1,7 @@
# devp2p Simulations # devp2p Simulations
The `p2p/simulations` package implements a simulation framework which supports The `p2p/simulations` package implements a simulation framework that supports
creating a collection of devp2p nodes, connecting them together to form a creating a collection of devp2p nodes, connecting them to form a
simulation network, performing simulation actions in that network and then simulation network, performing simulation actions in that network and then
extracting useful information. extracting useful information.
@ -65,10 +65,10 @@ localhost ports.
## Network ## Network
A simulation network is created with an ID and default service (which is used A simulation network is created with an ID and default service. The default
if a node is created without an explicit service), exposes methods for service is used if a node is created without an explicit service. The
creating, starting, stopping, connecting and disconnecting nodes, and emits network has exposed methods for creating, starting, stopping, connecting
events when certain actions occur. and disconnecting nodes. It also emits events when certain actions occur.
### Events ### Events
@ -80,7 +80,7 @@ A simulation network emits the following events:
The events have a "control" flag which when set indicates that the event is the The events have a "control" flag which when set indicates that the event is the
outcome of a controlled simulation action (e.g. creating a node or explicitly outcome of a controlled simulation action (e.g. creating a node or explicitly
connecting two nodes together). connecting two nodes).
This is in contrast to a non-control event, otherwise called a "live" event, This is in contrast to a non-control event, otherwise called a "live" event,
which is the outcome of something happening in the network as a result of a which is the outcome of something happening in the network as a result of a
@ -98,12 +98,12 @@ network and then wait for expectations to be met.
With a running simulation network, the `Simulation.Run` method can be called With a running simulation network, the `Simulation.Run` method can be called
with a `Step` which has the following fields: with a `Step` which has the following fields:
* `Action` - a function which performs some action in the network * `Action` - a function that performs some action in the network
* `Expect` - an expectation function which returns whether or not a * `Expect` - an expectation function which returns whether or not a
given node meets the expectation given node meets the expectation
* `Trigger` - a channel which receives node IDs which then trigger a check * `Trigger` - a channel that receives node IDs which then trigger a check
of the expectation function to be performed against that node of the expectation function to be performed against that node
As a concrete example, consider a simulated network of Ethereum nodes. An As a concrete example, consider a simulated network of Ethereum nodes. An
@ -116,7 +116,7 @@ the expectation and what network events were emitted during the step run.
## HTTP API ## HTTP API
The simulation framework includes a HTTP API which can be used to control the The simulation framework includes a HTTP API that can be used to control the
simulation. simulation.
The API is initialised with a particular node adapter and has the following The API is initialised with a particular node adapter and has the following