Method requestRemoteAddr

internal/nodes/http_request.go:1204–1298

获取请求的客户端地址

(supportVar bool)

// 获取请求的客户端地址
func (this *HTTPRequest) requestRemoteAddr(supportVar bool) string {
	if len(this.lnRemoteAddr) > 0 {
		return this.lnRemoteAddr
	}

	if supportVar && len(this.remoteAddr) > 0 {
		return this.remoteAddr
	}

	if supportVar &&
		this.web.RemoteAddr != nil &&
		this.web.RemoteAddr.IsOn &&
		!this.web.RemoteAddr.IsEmpty() {
		if this.web.RemoteAddr.HasValues() { // multiple values
			for _, value := range this.web.RemoteAddr.Values() {
				var remoteAddr = this.Format(value)
				if len(remoteAddr) > 0 && net.ParseIP(remoteAddr) != nil {
					this.remoteAddr = remoteAddr
					return remoteAddr
				}
			}
		} else { // single value
			var remoteAddr = this.Format(this.web.RemoteAddr.Value)
			if len(remoteAddr) > 0 && net.ParseIP(remoteAddr) != nil {
				this.remoteAddr = remoteAddr
				return remoteAddr
			}
		}

		// 如果是从Header中读取，则直接返回原始IP
		if this.web.RemoteAddr.Type == serverconfigs.HTTPRemoteAddrTypeRequestHeader {
			var remoteAddr = this.RawReq.RemoteAddr
			host, _, err := net.SplitHostPort(remoteAddr)
			if err == nil {
				this.remoteAddr = host
				return host
			} else {
				return remoteAddr
			}
		}
	}

	// X-Forwarded-For
	var forwardedFor = this.RawReq.Header.Get("X-Forwarded-For")
	if len(forwardedFor) > 0 {
		commaIndex := strings.Index(forwardedFor, ",")
		if commaIndex > 0 {
			forwardedFor = forwardedFor[:commaIndex]
		}
		if net.ParseIP(forwardedFor) != nil {
			if supportVar {
				this.remoteAddr = forwardedFor
			}
			return forwardedFor
		}
	}

	// Real-IP