插件内调用proxywasm的添加、删除header方法，导致AI路由404 || calls the add and delete header method of proxywasm in the plug-in, resulting in AI routing 404.

[E0011012]

我的自定义插件只要在onHttpRequestHeaders阶段调用proxywasm的添加头或者删除头方法，就会导致路由匹配不到404，不调用proxywasm的上述方法，路由就能匹配成功，这是为什么

---

As long as my custom plug-in calls the add header or delete header method of proxywasm in the onHttpRequestHeaders stage, the route will not match 404. If the above method of proxywasm is not called, the route will be matched successfully. This is why

[E0011012]

AI路由设置了前缀、model精准匹配

---

AI routing sets prefix and model accurate matching

[CH3CHO]

如果你的路由需要特定header才能匹配，那么需要先disableReroute

…

---- 回复的原邮件 ---- | 发件人 | ***@***.***> | | 发送日期 | 2026年04月15日 21:21 | | 收件人 | alibaba/higress ***@***.***> | | 抄送人 | Subscribed ***@***.***> | | 主题 | Re: [alibaba/higress] 插件内调用AddHttpRequestHeader，导致AI路由404 (Discussion #3723) | AI路由设置了前缀、model精准匹配 — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[E0011012]

如果你的路由需要特定header才能匹配，那么需要先disableReroute
…
---- 回复的原邮件 ---- | 发件人 | @.> | | 发送日期 | 2026年04月15日 21:21 | | 收件人 | alibaba/higress @.> | | 抄送人 | Subscribed @.> | | 主题 | Re: [alibaba/higress] 插件内调用AddHttpRequestHeader，导致AI路由404 (Discussion #3723) | AI路由设置了前缀、model精准匹配 — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: @.>

问题解决了，但是为什么重新路由就会404呢，AI路由只匹配前缀+model+消费者认证，我的操作也没有改变路由匹配的规则呀

[CH3CHO]

那请详细描述你的场景

…

---- 回复的原邮件 ---- | 发件人 | ***@***.***> | | 发送日期 | 2026年04月16日 08:45 | | 收件人 | alibaba/higress ***@***.***> | | 抄送人 | Kent ***@***.***>, Comment ***@***.***> | | 主题 | Re: [alibaba/higress] 插件内调用proxywasm的添加、删除header方法，导致AI路由404 || calls the add and delete header method of proxywasm in the plug-in, resulting in AI routing 404. (Discussion #3723) | 如果你的路由需要特定header才能匹配，那么需要先disableReroute … ---- 回复的原邮件 ---- | 发件人 | @.> | | 发送日期 | 2026年04月15日 21:21 | | 收件人 | alibaba/higress @.> | | 抄送人 | Subscribed @.> | | 主题 | Re: [alibaba/higress] 插件内调用AddHttpRequestHeader，导致AI路由404 (Discussion #3723) | AI路由设置了前缀、model精准匹配 — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: @.> 问题解决了，但是为什么重新路由就会404呢，AI路由只匹配前缀+model+消费者认证，我的操作也没有改变路由匹配的规则呀 — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[E0011012]

创建AI提供者doubao-seed：设置服务地址为http:///api/volc/aicc/doubao-seed-2.0-pro/v1*（这个uri会走另外一个apisix网关，将uri替换为/api/v3/*）

该AI路由匹配以下规则：
路径匹配规则--前缀匹配/v1
模型匹配规则--前缀匹配doubao-seed

插件逻辑：
在onHttpRequestHeaders阶段进行header的增删操作（未使用disableReRoute）

访问http://higress-gateway域名/v1/chat/completions
body携带model：doubao-seed-2.0-pro，这时候会404

[CH3CHO]

请补充以下信息：

1. 路由配置，建议截图
2. 插件中的 header 增删操作代码

---

Please add the following information:

1. Routing configuration, screenshots are recommended
2. Header addition and deletion operation code in the plug-in

[E0011012]

路由配置：因为是内网，没办法截图，sorry

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    higress.io/comment: PLEASE DO NOT EDIT DIRECTLY. This resource is managed by Higress.
    higress.io/destination: llm-ttt.internal.dns:80
    higress.io/ignore-path-case: "true"
    higress.io/prefix-match-header-x-higress-llm-model: doubao-seed
  creationTimestamp: "2026-04-15T11:31:42Z"
  generation: 1
  labels:
    higress.io/domain_t-agi-gateway.cdtp.com: "true"
    higress.io/internal: "true"
    higress.io/resource-definer: higress
  name: ai-route-ttt.internal
  namespace: t-cxmt-test-agi-higress
  resourceVersion: "823853696"
  uid: 9ee94027-71f2-4b2f-a1b6-d6572cc5945e
spec:
  ingressClassName: higress
  rules:
  - host: t-agi-gateway.cdtp.com
    http:
      paths:
      - backend:
          resource:
            apiGroup: networking.higress.io
            kind: McpBridge
            name: default
        path: /v1
        pathType: Prefix
status:
  loadBalancer:
    ingress:
    - ip: 10.251.12.225

代码

// onHttpRequestHeaders 处理请求头
func onHttpRequestHeaders(ctx wrapper.HttpContext, myConfig MyConfig) types.Action {
	**// 当时没有加入该逻辑**
        //ctx.DisableReroute()

	// 删除原有的 Authorization 头（如果存在）
	_ = proxywasm.RemoveHttpRequestHeader("authorization")

	// 添加新的 Authorization 头（Bearer 认证）
	if myConfig.ApiKey != "" {
		_ = proxywasm.AddHttpRequestHeader("authorization", "Bearer "+myConfig.ApiKey)
	}

	// 添加加密标识头
	_ = proxywasm.AddHttpRequestHeader("X-AICC-Encryption-Enable", "true")

	// 添加云平台标识头
	_ = proxywasm.AddHttpRequestHeader("X-Cloud-ID", "volcengine")

	return types.ActionContinue
}