This document provides an overview of the architecture and design decisions around Ztunnel, the node-proxy component in ambient mode.

## Background and motivation

Motivations to implement ztunnel generally came from two areas.

First, and most importantly, it serves as a means to implement the real goal: waypoints.
For various reasons outside the scope of this document, there is a desire to move from a sidecar based architecture to a "remote proxy" architecture.

        }

        fun assertHasAccepted(vararg accepted: Pair<String, List<String>>) {
            assertThat("Has accepted", richReport.accepted, CoreMatchers.equalTo(accepted.map { ReportMessage(it.first, it.second) }))
        }

        fun assertHasErrors(vararg errors: List<String>) {
            assertHasErrors(*errors.toList().flatten().toTypedArray())
        }

                        os to (testProject to performanceTestDuration)
                    }
            }
        }
        return pairs.groupBy({ it.first }, { it.second })
            .mapValues { entry -> entry.value.groupBy({ it.first }, { it.second }) }
    }

    private
    fun readPerformanceTestConfigurations(performanceTestsCiJson: File): List<PerformanceTestConfiguration> {

# Development - Contributing

First, you might want to see the basic ways to [help FastAPI and get help](help-fastapi.md){.internal-link target=_blank}.

## Developing

If you already cloned the <a href="https://github.com/tiangolo/fastapi" class="external-link" target="_blank">fastapi repository</a> and you want to deep dive in the code, here are some guidelines to set up your environment.

### Virtual environment with `venv`

So, about the egg and the chicken, how do you call the first `async` function?

If you are working with **FastAPI** you don't have to worry about that, because that "first" function will be your *path operation function*, and FastAPI will know how to do the right thing.

        val defaultExpressionInfo = computeDefaultExpression(defaultStatement, firDefaultStatement, firValuedReturnExpressions)

        val graphIndex = ControlFlowGraphIndex {
            getControlFlowGraph(anchor = statements.first(), firStatements = firStatements)
        }

        val jumpExpressions = buildList {
            fun add(expressions: List<FirElement>) {
                expressions.mapNotNullTo(this) { it.psi as? KtExpression }

    proxySelector.proxies.add(proxyA)
    proxySelector.proxies.add(proxyB)
    val routeSelector = newRouteSelector(address)
    proxySelector.assertRequests(address.url.toUri())

    // First try the IP addresses of the first proxy, in sequence.
    assertThat(routeSelector.hasNext()).isTrue()
    dns[PROXY_A_HOST] = dns.allocate(2)
    val selection1 = routeSelector.next()

## Version 5.0.0-alpha.13

_2024-04-16_

 *  Breaking: Tag unstable new APIs as `@ExperimentalOkHttpApi`. We intend to release OkHttp 5.0
    without stabilizing these new APIs first.

    Do not use these experimental APIs in modules that may be executed using a version of OkHttp
    different from the version that the module was compiled with. Do not use them in published

We may ask you to answer these questions directly in the GitHub issue or (for large changes) in a shared Google Doc.

If you are looking for good first issues, take a look at the list of [good first issues](https://github.com/gradle/gradle/labels/good%20first%20issue) that should be actionable and ready for a contribution.

### Security vulnerabilities

```Python
    first_name, last_name
```

sang:

```Python
    first_name: str, last_name: str
```

Chính là nó.

Những thứ đó là "type hints":

```Python hl_lines="1"
{!../../../docs_src/python_types/tutorial002.py!}
```

Đó không giống như khai báo những giá trị mặc định giống như:

```Python
    first_name="john", last_name="doe"
```