实现和 nginx proxy_redirect 功能等价的 wasm 插件（Implement A wasm plugin that the functional equivalent of nginx proxy_redirect）

Why do you need it?

Is your feature request related to a problem? Please describe in details

我有如下的路由

[{
    "match": {
        "PathSpecifier": {
            "Prefix": "/web/"
        }
    },
    "Action": {
        "Route": {
            "ClusterSpecifier": {
                "Cluster": "my-web"
            },
            "prefix_rewrite": "/",
            "HostRewriteSpecifier": {
                "AutoHostRewrite": {}
            }
        }
    }
},
{
    "match": {
        "PathSpecifier": {
            "Prefix": "/web"
        }
    },
    "Action": {
        "Route": {
            "ClusterSpecifier": {
                "Cluster": "my-web"
            },
            "prefix_rewrite": "/",
            "HostRewriteSpecifier": {
                "AutoHostRewrite": {}
            }
        }
    }
}]

假设请求 {gateway-domain}/web/abc , 上游服务 my-web 返回 302 Found location: /abc/ . 此时如果 envoy 不处理该响应的话, 浏览器就会访问 {gateway-domain}/abc/ 了.

对标 Nginx http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_redirect

How could it be?

A clear and concise description of what you want to happen. You can explain more about input of the feature, and output of it.

envoy 要么内部处理该重定向, 自动请求新的地址, 将正确结果返回客户端, 要么修改 location 字段后再返回给客户端.

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alibaba / higress

实现和 nginx proxy_redirect 功能等价的 wasm 插件（Implement A wasm plugin that the functional equivalent of nginx proxy_redirect） #61

Why do you need it?

How could it be?

Other related information