标签:+= span try delegate tee service add pre res
当一个服务器有多个 IP 时, 在使用 webclient 对象需要指定出口 IP
public class MyWebClient : WebClient { private IPAddress ipAddress; public MyWebClient(IPAddress ipAddress) { this.ipAddress = ipAddress; } protected override WebRequest GetWebRequest(Uri address) { var request = (HttpWebRequest)base.GetWebRequest(address); // 把 KeepAlive 设置为 false 表示连接用完就关 request.KeepAlive = false; request.ServicePoint.ConnectionLeaseTimeout = 0; request.ServicePoint.BindIPEndPointDelegate += (servicePoint, remoteEndPoint, retryCount) => { return new IPEndPoint(ipAddress, 0); }; return request; } }
KeepAlive 和 ConnectionLeaseTimeout 这两个属性非常重要, 不然 ServicePoint 会有缓存, 导致出口 IP 错乱。
标签:+= span try delegate tee service add pre res
原文地址:https://www.cnblogs.com/kuku/p/12858458.html