alibaba/Sentinel

Nginx代理后如何针对请求的Client IP进行限流

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#2,456 opened on Nov 22, 2021

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 (1 comment) (0 reactions) (0 assignees)Java (8,150 forks)batch import
area/gateway-flow-controlgood first issuekind/enhancement

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Description

因为使用了Nginx，针对请求的Client IP进行限流时有问题

image

所有请求获取到的ip地址都为同一个地址172.*.*.*，（应用部署在docker容器内）。

看了下com.alibaba.csp.sentinel.adapter.gateway.sc.ServerWebExchangeItemParser#getRemoteAddress的方法，获取ip时使用的代码是

public String getRemoteAddress(ServerWebExchange exchange) {
        InetSocketAddress remoteAddress = exchange.getRequest().getRemoteAddress();
        return remoteAddress == null ? null : remoteAddress.getAddress().getHostAddress();
    }

是否可以自定义获取请求ip地址？或者可以让sentinel得到代理后真实请求ip的方法

Contributor guide

Research direction
Implement a custom IP resolver configuration in the gateway adapter to support X Forwarded For headers.
Tech stack
java
Domain
backendapi
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
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Half day
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Active
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Clear
Prerequisites
Java
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60