atest/configuration/http/http_conn_man/headers#x-request-id>标头</a>，
则 Istio 网关或 Sidecar 代理 (Envoy) 会生成初始<a href=https://www.envoyproxy.io/docs/envoy/latest/configuration/http/http_conn_man/headers#x-request-id>标头</a>。</p></div></div><div class="faq-block faq-block--collapsed" id=istio-copy-headers><div class=faq-block-question><span class=faq-block-question__text>为什么 Istio 不能代替应用程序传播标头？</span><div class=faq-block-question__icon><svg class="ic