Method processRequestHeaders

internal/nodes/http_request.go:1729–1802

处理自定义Request Header

(reqHeader http.Header)

// 处理自定义Request Header
func (this *HTTPRequest) processRequestHeaders(reqHeader http.Header) {
	this.fixRequestHeader(reqHeader)

	if this.web.RequestHeaderPolicy != nil && this.web.RequestHeaderPolicy.IsOn {
		// 删除某些Header
		for name := range reqHeader {
			if this.web.RequestHeaderPolicy.ContainsDeletedHeader(name) {
				reqHeader.Del(name)
			}
		}

		// Set
		for _, header := range this.web.RequestHeaderPolicy.SetHeaders {
			if !header.IsOn {
				continue
			}

			// 是否已删除
			if this.web.RequestHeaderPolicy.ContainsDeletedHeader(header.Name) {
				continue
			}

			// 请求方法
			if len(header.Methods) > 0 && !lists.ContainsString(header.Methods, this.RawReq.Method) {
				continue
			}

			// 域名
			if len(header.Domains) > 0 && !configutils.MatchDomains(header.Domains, this.ReqHost) {
				continue
			}

			var headerValue = header.Value
			if header.ShouldReplace {
				if len(headerValue) == 0 {
					headerValue = reqHeader.Get(header.Name) // 原有值
				} else if header.HasVariables() {
					headerValue = this.Format(header.Value)
				}

				for _, v := range header.ReplaceValues {
					headerValue = v.Replace(headerValue)
				}
			} else if header.HasVariables() {
				headerValue = this.Format(header.Value)
			}

			// 支持修改Host
			if header.Name == "Host" && len(header.Value) > 0 {
				this.RawReq.Host = headerValue
			} else {
				if header.ShouldAppend {
					reqHeader[header.Name] = append(reqHeader[header.Name], headerValue)
				} else {
					reqHeader[header.Name] = []string{headerValue}
				}
			}
		}