实现请求连接数等限制

internal/nodes/http_request_limit.go

@@ -0,0 +1,32 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package nodes
+
+import "net/http"
+
+func (this *HTTPRequest) doRequestLimit() (shouldStop bool) {
+	// 检查请求Body尺寸
+	// TODO 处理分片提交的内容
+	if this.web.RequestLimit.MaxBodyBytes() > 0 &&
+		this.RawReq.ContentLength > this.web.RequestLimit.MaxBodyBytes() {
+		this.writeCode(http.StatusRequestEntityTooLarge)
+		return true
+	}
+
+	// 设置连接相关参数
+	if this.web.RequestLimit.MaxConns > 0 || this.web.RequestLimit.MaxConnsPerIP > 0 {
+		requestConn := this.RawReq.Context().Value(HTTPConnContextKey)
+		if requestConn != nil {
+			clientConn, ok := requestConn.(ClientConnInterface)
+			if ok && !clientConn.IsBound() {
+				if !clientConn.Bind(this.Server.Id, this.requestRemoteAddr(true), this.web.RequestLimit.MaxConns, this.web.RequestLimit.MaxConnsPerIP) {
+					this.writeCode(http.StatusTooManyRequests)
+					this.closeConn()
+					return true
+				}
+			}
+		}
+	}
+
+	return false
+}