## Install from Source

You are encouraged to [write tests](https://fastapi.tiangolo.com/tutorial/testing/) for your application and update your FastAPI version frequently after ensuring that your tests are passing. This way you will benefit from the latest features, bug fixes, and **security fixes**.

You can learn more about [FastAPI versions and how to pin and upgrade them](https://fastapi.tiangolo.com/deployment/versions/) for your project in the docs.

<div class="termy">

```console
$ uv pip install "fastapi[standard]"
---> 100%
```

</div>

////

### Install from `requirements.txt` { #install-from-requirements-txt }

If you have a `requirements.txt`, you can now use it to install its packages.

//// tab | `pip`

<div class="termy">

```console
$ pip install -r requirements.txt

* fluentd-elasticsearch is unchanged from 1.10: v2.0.4 ([#58525](https://github.com/kubernetes/kubernetes/pull/58525))
* fluentd-gcp is unchanged from 1.10: v3.0.0. ([#60722](https://github.com/kubernetes/kubernetes/pull/60722))
* Ingress glbc is unchanged from 1.10: v1.0.0 ([#61302](https://github.com/kubernetes/kubernetes/pull/61302))
* OIDC authentication is unchanged from 1.10: coreos/go-oidc v2 ([#58544](https://github.com/kubernetes/kubernetes/pull/58544))

  }

  @Test fun testHostname() {
    val headers = headersOf("Host", "host-from-header.com")
    val socket =
      MockWebServerSocket(
        FakeSocket(
          localAddress =
            InetAddress.getByAddress(
              "host-from-address.com",
              byteArrayOf(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1),
            ),
          localPort = 80,

        this.setSubCommand(SmbComTransaction.TRANS2_QUERY_PATH_INFORMATION);
    }

    /**
     * Gets the file information from the response.
     *
     * @return the info
     */
    public final FileInformation getInfo() {
        return this.info;
    }

    /**
     * Gets the file information from the response cast to the specified type.
     *
     * @param <T> the type of file information to return

// The Compressor itself must be safe to invoke from multiple goroutines
// simultaneously, but each returned writer will be used only by
// one goroutine at a time.
type Compressor func(w io.Writer) (io.WriteCloser, error)

// A Decompressor returns a new decompressing reader, reading from r.
// The [io.ReadCloser]'s Close method must be used to release associated resources.

# make v1.2.3.zip builds a v1.2.3.zip file
# from the current origin/master.
# copy and edit the 'go run' command by hand to use a different branch.
v%.zip:
	git fetch origin master
	go run ../../src/cmd/go/internal/fips140/mkzip.go v$*

# normally mkzip refuses to overwrite an existing zip file.
# make v1.2.3.rm removes the zip file and and unpacked
# copy from the module cache.
v%.rm:
	rm -f v$*.zip

		// Borrow the description error from the API error code
		writeSTSErrorResponse(ctx, w, stsErr, errors.New(errorCodes[apiErrCode].Description))
		return
	}

	if err := claims.populateSessionPolicy(r.Form); err != nil {
		writeSTSErrorResponse(ctx, w, ErrSTSInvalidParameterValue, err)
		return
	}

	duration, err := openid.GetDefaultExpiration(r.Form.Get(stsDurationSeconds))
	if err != nil {

OkHttp with an HTTP request, you’re describing the request at a high-level: _“fetch me this URL with these headers.”_ For correctness and efficiency, OkHttp rewrites your request before transmitting it.

OkHttp may add headers that are absent from the original request, including `Content-Length`, `Transfer-Encoding`, `User-Agent`, `Host`, `Connection`, and `Content-Type`. It will add an `Accept-Encoding` header for transparent response compression unless the header is already present. If you’ve...