SYS_SEMTIMEDOP             = 192
	SYS_SEMOP                  = 193
	SYS_SHMGET                 = 194
	SYS_SHMCTL                 = 195
	SYS_SHMAT                  = 196
	SYS_SHMDT                  = 197
	SYS_SOCKET                 = 198
	SYS_SOCKETPAIR             = 199
	SYS_BIND                   = 200
	SYS_LISTEN                 = 201
	SYS_ACCEPT                 = 202
	SYS_CONNECT                = 203

	SYS_SEMTIMEDOP             = 192
	SYS_SEMOP                  = 193
	SYS_SHMGET                 = 194
	SYS_SHMCTL                 = 195
	SYS_SHMAT                  = 196
	SYS_SHMDT                  = 197
	SYS_SOCKET                 = 198
	SYS_SOCKETPAIR             = 199
	SYS_BIND                   = 200
	SYS_LISTEN                 = 201
	SYS_ACCEPT                 = 202
	SYS_CONNECT                = 203

	return mptcpAvailable
}

// Check that MPTCP is supported by attempting to create an MPTCP socket and by
// looking at the returned error if any.
func initMPTCPavailable() {
	s, err := sysSocket(syscall.AF_INET, syscall.SOCK_STREAM, _IPPROTO_MPTCP)
	switch {
	case errors.Is(err, syscall.EPROTONOSUPPORT): // Not supported: >= v5.6
	case errors.Is(err, syscall.EINVAL): // Not supported: < v5.6

  }

  override fun matchesSocket(sslSocket: SSLSocket): Boolean = socketAdapterFactory.matchesSocket(sslSocket)

  override fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,
    protocols: List<Protocol>,
  ) {
    getDelegate(sslSocket)?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? {

  override fun matchesSocket(sslSocket: SSLSocket): Boolean = sslSocketClass.isInstance(sslSocket)

  override fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,
    protocols: List<Protocol>,
  ) {
    // No TLS extensions if the socket class is custom.
    if (matchesSocket(sslSocket)) {
      try {
        // Enable session tickets.

 */
class ConscryptSocketAdapter : SocketAdapter {
  override fun matchesSocket(sslSocket: SSLSocket): Boolean = Conscrypt.isConscrypt(sslSocket)

  override fun isSupported(): Boolean = ConscryptPlatform.isSupported

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    when {
      matchesSocket(sslSocket) -> Conscrypt.getApplicationProtocol(sslSocket)
      else -> null // No TLS extensions if the socket class is custom.
    }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? {
    val s = sslSocket as BCSSLSocket

    return when (val protocol = s.applicationProtocol) {
      null, "" -> null
      else -> protocol
    }
  }

  override fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,
    protocols: List<Protocol>,
  ) {

        sslSocket.sslParameters = sslParameters
      }
    } else {
      super.configureTlsExtensions(sslSocket, hostname, protocols)
    }
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    if (sslSocket is org.openjsse.javax.net.ssl.SSLSocket) {
      when (val protocol = sslSocket.applicationProtocol) {

// This file implements sysSocket for platforms that provide a fast path for
// setting SetNonblock and CloseOnExec.

//go:build dragonfly || freebsd || linux || netbsd || openbsd

package net

import (
	"os"
	"syscall"
)

// Wrapper around the socket system call that marks the returned file
// descriptor as nonblocking and close-on-exec.
func sysSocket(family, sotype, proto int) (int, error) {

@SuppressSignatureCheck
class Android10SocketAdapter : SocketAdapter {
  override fun matchesSocket(sslSocket: SSLSocket): Boolean = SSLSockets.isSupportedSocket(sslSocket)

  override fun isSupported(): Boolean = Companion.isSupported()

  @SuppressLint("NewApi")
  override fun getSelectedProtocol(sslSocket: SSLSocket): String? {
    return try {
      // SSLSocket.getApplicationProtocol returns "" if application protocols values will not