var manifest v1.ImageIndex = empty.Index
		manifest = mutate.IndexMediaType(manifest, types.DockerManifestList)
		for idx, i := range images {
			img := i
			mt, err := img.MediaType()
			if err != nil {
				return fmt.Errorf("failed to get mediatype: %w", err)
			}

			h, err := img.Digest()
			if err != nil {
				return fmt.Errorf("failed to compute digest: %w", err)
			}

			size, err := img.Size()

 * limitations under the License.
 */
package okhttp3.recipes.kt

import java.io.IOException
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.RequestBody
import okio.BufferedSink

class PostStreaming {
  private val client = OkHttpClient()

  fun run() {

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.recipes.kt

import java.io.File
import java.io.IOException
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.MultipartBody
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.RequestBody.Companion.asRequestBody

class PostMultipart {
  private val client = OkHttpClient()

  fun noAttemptToReadResponseIfLoadingRequestBodyIsSourceOfFailure() {
    server.enqueue(MockResponse(body = "abc"))

    val requestBody =
      object : RequestBody() {
        override fun contentType(): MediaType? = null

        override fun writeTo(sink: BufferedSink) {
          throw IOException("boom") // Despite this exception, 'sink' is healthy.
        }
      }

    val callA =
      client.newCall(

    return response.body().string();
  }
}
```


Post to a Server
----------------

This program posts data to a service. [Full source][post_example].

```java
public static final MediaType JSON = MediaType.get("application/json");

OkHttpClient client = new OkHttpClient();

String post(String url, String json) throws IOException {
  RequestBody body = RequestBody.create(json, JSON);

import assertk.assertions.contains
import assertk.assertions.hasMessage
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import java.io.IOException
import kotlin.test.assertFailsWith
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.ResponseBody.Companion.toResponseBody
import okhttp3.brotli.internal.uncompress
import okio.ByteString

import assertk.assertions.isEqualTo
import assertk.assertions.isNull
import java.io.FileDescriptor
import java.io.FileInputStream
import java.io.IOException
import java.nio.file.Path
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.asRequestBody
import okhttp3.RequestBody.Companion.toRequestBody
import okio.Buffer
import okio.FileSystem
import okio.Path.Companion.toOkioPath

		Header:     map[string][]string(res.Header),
		Body:       res.Body,
	}

	if res.StatusCode != http.StatusOK {
		contentType := res.Header.Get("Content-Type")
		if mediaType, params, _ := mime.ParseMediaType(contentType); mediaType == "text/plain" {
			switch charset := strings.ToLower(params["charset"]); charset {
			case "us-ascii", "utf-8", "":
				// Body claims to be plain text in UTF-8 or a subset thereof.

			return nil, nil, nil, NegotiateError{ContentType: contentType, Stream: true}
		}
		info = mediaTypes[0]
	}
	if info.StreamSerializer == nil {
		return nil, nil, nil, NegotiateError{ContentType: info.MediaType, Stream: true}
	}
	return n.serializer.DecoderToVersion(info.Serializer, n.decode), info.StreamSerializer.Serializer, info.StreamSerializer.Framer, nil
}

}

type fakeSerializer struct {
	serializer runtime.Serializer
}

func (n *fakeSerializer) SupportedMediaTypes() []runtime.SerializerInfo {
	return []runtime.SerializerInfo{
		{
			MediaType:        "application/json",
			MediaTypeType:    "application",
			MediaTypeSubType: "json",
		},
	}
}