* Make Node Explorer release its RPC connection on shutdown.
* Declare Explorer's login() function as tail-recursive.
* Replace lateinit rpcConnection with oridinary var.
* Notify the node when closing an RPC connection gracefully.
* Specify notary in CashIssueAndPaymentFlow
* Specify notary in PaymentRequest
* Address comments
* Default to the first notary in the `CashPaymentFlow`
This requires the class carpenter to be able to run in a "lenient" mode where it permits synthesised classes to implement interfaces with unimplemented methods.
The list of CorDapps jars is no longer passed in via the cmd line but is now expected to be placed in the bootstrapped directory.
Ended up being a bit of a refactor to cater for unit testing, and also tidied up the bootstrapper docs.
* Introduce new h2Settings config block which overrides h2Port
* H2 server listens on localhost by default
* Change is backward compatible and old h2Port option can still be used but that always listens on localhost now
* Update changelog and docs with H2 changes
As reported in [CORDA-1609](https://r3-cev.atlassian.net/browse/CORDA-1609),
`CordaRPCClientConfiguration.default` is not accessible from Java since
`default` is a reserved keyword.
As part of the refactor made in #2831, `CordaRPCClientConfiguration` went
from being a data class to an interface with a backing implementation of
type `CordaRPCClientConfigurationImpl`.
This resulted in Java users having to rewrite code that was on the form:
```java
final CordaRPCClient client = new CordaRPCClient(
nodeAddress, CordaRPCClientConfiguration.DEFAULT
);
```
to something like this:
```java
final CordaRPCClient client = new CordaRPCClient(
nodeAddress, CordaRPCClientConfiguration.Companion.default()
);
```
However, this does not work. The user would get a compilation error because
`default` is a reserved keyword in Java.
Since `CordaRPCClientConfiguration` has been made an interface, there is no
easy way of introducing a static final field on the interface from Kotlin.
Consequently, I've changed this back to using a `class` with a static field
named `DEFAULT` instead of the static method `default()`.
It should be noted that `default()` / `DEFAULT` is currently only used
internally to pass in default values in `CordaRPCClient.kt` and
`CordaRPCClientUtils.kt`. That said, it is exposed as part of our API
surface and consequently shouldn't be broken.
The latter means that in the above example, the user would actually not
have to provide the parameter at all:
```java
final CordaRPCClient client = new CordaRPCClient(nodeAddress);
```
As can be seen from the definition of `CordaRPCClient`:
```kotlin
class CordaRPCClient private constructor(...) {
@JvmOverloads
constructor(
hostAndPort: NetworkHostAndPort,
configuration: CordaRPCClientConfiguration = CordaRPCClientConfiguration.DEFAULT
) : this(hostAndPort, configuration, null)
```
The mentioned [refactor](7a077e76f0 (diff-0948c125db93a22263eb81eaf3161c17R65))
did not make it into the 3.1 release, so from an API-stability perspective,
this change can be applied without affecting our commitment to a
backwards compatible API..
