}

		if net.ParseIP(host) != nil {
			// For IP only setups there is no need for DNS lookups.
			return baseDialCtx(ctx, "tcp", addr)
		}

		ips, err := lookupHost(ctx, host)
		if err != nil {
			return nil, err
		}

		for _, ip := range ips {
			conn, err = baseDialCtx(ctx, "tcp", net.JoinHostPort(ip, port))
			if err == nil {
				break
			}
		}

		return
	}

      serviceAccountName: {{.ServiceAccount | quote}}
      containers:
      - name: istio-proxy
        ports:
        - containerPort: 15021
          name: status-port
          protocol: TCP
        - containerPort: 15090
          protocol: TCP
          name: http-envoy-prom
        {{- if contains "/" (annotation .ObjectMeta `sidecar.istio.io/proxyImage` .Values.global.proxy.image) }}

      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ matrix.go }}-${{ hashFiles('tests/go.mod') }}

    - name: Tests
      run: GITHUB_ACTION=true GORM_DIALECT=mysql GORM_DSN="gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True" ./tests/tests_all.sh

  mariadb:
    strategy:
      matrix:
        dbversion: [ 'mariadb:latest' ]
        go: ['1.21', '1.20', '1.19']

client protocol will be preserved while initiating connection to backend. type: boolean type: object tcp: description: Settings common to both HTTP and TCP upstream connections. properties: connectTimeout: description: TCP connection timeout. type: string maxConnectionDuratio: description: The maximum duration of a connection. type: string maxConnections: description: Maximum number of HTTP1 /TCP connections to a destination host. format: int32 type: integer tcpKeepalive: description: If set then...

)

var DB *gorm.DB
var (
	mysqlDSN     = "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True&loc=Local"
	postgresDSN  = "user=gorm password=gorm dbname=gorm host=localhost port=9920 sslmode=disable TimeZone=Asia/Shanghai"
	sqlserverDSN = "sqlserver://gorm:LoremIpsum86@localhost:9930?database=gorm"
	tidbDSN      = "root:@tcp(localhost:9940)/test?charset=utf8&parseTime=True&loc=Local"
)

func init() {

                    },
                    "last_updated": "2023-12-23T13:46:00.707Z"
                },
                {
                    "ecds_filter": {
                        "@type": "type.googleapis.com/envoy.config.core.v3.TypedExtensionConfig",
                        "name": "istio.io/telemetry/stats/prometheus/sidecar/Outbound/TCP"
                    },

        if (connectResult == null) {
          connectResult = awaitTcpConnect(awaitTimeoutNanos, TimeUnit.NANOSECONDS) ?: continue
        }

        if (connectResult.isSuccess) {
          // We have a connected TCP connection. Cancel and defer the racing connects that all lost.
          cancelInFlightConnects()

          // Finish connecting. We won't have to if the winner is from the connection pool.

		"Total number of failed internode calls")
	internodeDialedErrorsTotalMD = NewCounterMD(internodeDialErrorsTotal,
		"Total number of internode TCP dial timeouts and errors")
	internodeDialAvgTimeNanosMD = NewGaugeMD(internodeDialAvgTimeNanos,
		"Average dial time of internode TCP calls in nanoseconds")
	internodeSentBytesTotalMD = NewCounterMD(internodeSentBytesTotal,
		"Total number of bytes sent to other peer nodes")

次に証明書を使用して、クライアントとTLS Termination Proxy は、 **TCP通信**の残りを**どのように暗号化するかを決定**します。これで**TLSハンドシェイク**の部分が完了します。

この後、クライアントとサーバーは**暗号化されたTCP接続**を持ちます。そして、その接続を使って実際の**HTTP通信**を開始することができます。

これが**HTTPS**であり、純粋な（暗号化されていない）TCP接続ではなく、**セキュアなTLS接続**の中に**HTTP**があるだけです。

!!! tip
    通信の暗号化は、HTTPレベルではなく、**TCPレベル**で行われることに注意してください。

### HTTPS リクエスト

	"io"
	"net"
	"sync"
	"testing"
	"time"
)

// Test deadlineconn handles read timeout properly by reading two messages beyond deadline.
func TestBuffConnReadTimeout(t *testing.T) {
	l, err := net.Listen("tcp", "localhost:0")
	if err != nil {
		t.Fatalf("unable to create listener. %v", err)
	}
	defer l.Close()
	serverAddr := l.Addr().String()

	tcpListener, ok := l.(*net.TCPListener)
	if !ok {