WebClient 指定出口 IP
2021-03-10 06:28
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 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。 WebClient 指定出口 IP 标签：+= span try delegate tee service add pre res 原文地址：https://www.cnblogs.com/kuku/p/12858458.htmlpublic 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;
}
}