# If "TPROXY", use iptables TPROXY to redirect to Envoy.
  # The "TPROXY" mode preserves both the source and destination IP
  # addresses and ports, so that they can be used for advanced filtering
  # and manipulation.
  # The "TPROXY" mode also configures the sidecar to run with the
  # CAP_NET_ADMIN capability, which is required to use TPROXY.
  #interceptionMode: REDIRECT
  #

Harshavardhana <******@****.***> 1703206615 -0800

# Values set by 'go env -w' and written to the user's go/env file override these.
# The environment overrides everything else.

# Use the Go module mirror and checksum database by default.
# See https://proxy.golang.org for details.
GOPROXY=https://proxy.golang.org,direct
GOSUMDB=sum.golang.org

# Automatically download newer toolchains as directed by go.mod files.
# See https://go.dev/doc/toolchain for details.

			"-p", iptablesconstants.TCP,
			"-i", "lo",
			"-j", "ACCEPT")
		// CLI: -A ISTIO_PRERT -p tcp -m tcp --dport <INPORT> -m mark ! --mark 0x539/0xfff -j TPROXY --on-port <INPORT> --on-ip 127.0.0.1 --tproxy-mark 0x111/0xfff
		//
		// DESC: Anything heading to <INPORT> that does not have the mark, TPROXY to ztunnel inbound port <INPORT>
		iptablesBuilder.AppendRule(
			iptableslog.UndefinedCommand, ChainInpodPrerouting, iptablesconstants.MANGLE,

    }

    private static Proxy toProxy(org.apache.maven.repository.Proxy proxy) {
        Proxy result = null;
        if (proxy != null) {
            AuthenticationBuilder authBuilder = new AuthenticationBuilder();
            authBuilder.addUsername(proxy.getUserName()).addPassword(proxy.getPassword());
            result = new Proxy(proxy.getProtocol(), proxy.getHost(), proxy.getPort(), authBuilder.build());
        }

		},
		{
			name: "tproxy",
			annotations: map[string]string{
				annotation.SidecarStatus.Name:           "true",
				annotation.SidecarInterceptionMode.Name: redirectModeTPROXY,
			},
			proxyEnv: []corev1.EnvVar{},
			golden:   filepath.Join(env.IstioSrc, "cni/pkg/plugin/testdata/tproxy.txt.golden"),
		},
		{
			name:        "DNS",

    * Otherwise, you might have to stop the TLS Termination Proxy momentarily, start the renewal program to acquire the certificates, then configure them with the TLS Termination Proxy, and then restart the TLS Termination Proxy. This is not ideal, as your app(s) will not be available during the time that the TLS Termination Proxy is off.

    val method = userResponse.request.method
    when (responseCode) {
      HTTP_PROXY_AUTH -> {
        val selectedProxy = route!!.proxy
        if (selectedProxy.type() != Proxy.Type.HTTP) {
          throw ProtocolException("Received HTTP_PROXY_AUTH (407) code while not using proxy")
        }
        return client.proxyAuthenticator.authenticate(route, userResponse)
      }

    * これは、同じTLS Termination Proxyが証明書の更新処理も行う場合に非常に便利な理由の1つです。
    * そうでなければ、TLS Termination Proxyを一時的に停止し、証明書を取得するために更新プログラムを起動し、TLS Termination Proxyで証明書を設定し、TLS Termination Proxyを再起動しなければならないかもしれません。TLS Termination Proxyが停止している間はアプリが利用できなくなるため、これは理想的ではありません。


アプリを提供しながらこのような更新処理を行うことは、アプリケーション・サーバー（Uvicornなど）でTLS証明書を直接使用するのではなく、TLS Termination Proxyを使用して**HTTPSを処理する別のシステム**を用意したくなる主な理由の1つです。

## まとめ

        GOINSECURE=""
        GOMODCACHE="/Users/gopher/go/pkg/mod"
        GONOPROXY=""
        GONOSUMDB=""
        GOOS="darwin"
        GOPATH="/Users/gopher/go"
        GOPRIVATE=""
        GOPROXY="https://proxy.golang.org,direct"
        GOROOT="/usr/local/go"
        GOSUMDB="sum.golang.org"
        GOTMPDIR=""
        GOTOOLDIR="/usr/local/go/pkg/tool/darwin_arm64"
        GOVCS=""
        GOVERSION="go1.20.7"