title | author | date | CreateTime | categories |
---|---|---|---|---|
WPF 网络 request 的 read 方法不会返回 |
lindexi |
2019-06-23 11:26:26 +0800 |
2019-06-23 11:26:26 +0800 |
WPF |
我最近为宝资通写软件,这个软件需要从网上下网页。但是使用 HttpRequest 的时候发现 StreamReader 等方法可能等待很久不会返回,能否有方法设置超时解决卡住线程
使用 HttpRequest 的时候,用 Stream 的方法读取需要服务器返回,如果服务器没有返回,那么这个同步方法将会卡住不会返回
可以通过 ReadWriteTimeout 设置超时时间
request.ReadWriteTimeout = 20000;
加上超时,就让应用不会在服务器没有返回等待太久。因为有些时候服务器或网络差,不能在比较短时间返回,我们设置这个不能太小。
HttpWebRequest request = (HttpWebRequest) WebRequest.Create(url);
request.Timeout = 20000;
//网络响应
request.ReadWriteTimeout = 20000;
//request.Headers.Add(HttpRequestHeader.Accept, "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
//request.Headers["Accept"] = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
request.Method = "GET";
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
//request.CachePolicy=new HttpRequestCachePolicy()
//{
//};
request.ContentType = "application/x-www-form-urlencoded";
request.UserAgent =
"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36";
request.AllowAutoRedirect = true;
HttpWebResponse response = (HttpWebResponse) request.GetResponse();
if (response.StatusCode == HttpStatusCode.OK)
{
using (StreamReader stream = new StreamReader(response.GetResponseStream()))
{
return stream.ReadToEnd().Replace("\u0027", "'");
}
}