@JvmName("of")
    fun Map<String, String>.toHeaders(): Headers = commonToHeaders()

    @JvmName("-deprecated_of")
    @Deprecated(
      message = "function moved to extension",
      replaceWith = ReplaceWith(expression = "headers.toHeaders()"),
      level = DeprecationLevel.ERROR,
    )
    fun of(headers: Map<String, String>): Headers = headers.toHeaders()
  }

  require(millis <= Integer.MAX_VALUE) { "$name too large" }
  require(millis != 0L || !duration.isPositive()) { "$name too small" }
  return millis.toInt()
}

internal fun List<Header>.toHeaders(): Headers {
  val builder = Headers.Builder()
  for ((name, value) in this) {
    builder.addLenient(name.utf8(), value.utf8())
  }
  return builder.build()
}

import javax.net.ssl.X509KeyManager
import javax.net.ssl.X509TrustManager
import kotlin.reflect.KClass
import okhttp3.Handshake.Companion.handshake
import okhttp3.Headers.Companion.headersOf
import okhttp3.Headers.Companion.toHeaders
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.MediaType.Companion.toMediaTypeOrNull

import okhttp3.internal.ignoreIoExceptions
import okhttp3.internal.okHttpName
import okhttp3.internal.platform.Platform
import okhttp3.internal.platform.Platform.Companion.INFO
import okhttp3.internal.toHeaders
import okio.Buffer
import okio.BufferedSource
import okio.ByteString

/**
 * A socket connection to a remote peer. A connection hosts streams which can send and receive
 * data.
 *