使用WebProxy时HttpWebRequest的奇怪行为

Question

我有一个带有StreamReader的HttpWebRequest,它可以在不使用WebProxy的情况下工作得很好.当我使用WebProxy时,StreamReader会读取奇怪的字符而不是实际的html.这是代码.

HttpWebRequest req = (HttpWebRequest)WebRequest.Create("https://URL");
req.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.224 Safari/534.10";
req.Accept = "application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
req.Headers.Add("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.3");
req.Headers.Add("Accept-Encoding", "gzip,deflate,sdch");
req.Headers.Add("Accept-Language", "en-US,en;q=0.8");
req.Method = "GET";
req.CookieContainer = new CookieContainer();

WebProxy proxy = new WebProxy("proxyIP:proxyPort");
proxy.Credentials = new NetworkCredential("proxyUser", "proxyPass");
req.Proxy = this.proxy;
HttpWebResponse res = (HttpWebResponse)req.GetResponse();
StreamReader reader = new StreamReader(res.GetResponseStream());
string html = reader.ReadToEnd();

不使用WebProxy,变量html保存URL中的预期html字符串.但是,使用a WebProxy,html保持这样的值:

"\b\0\0\0\0\0 \0 ]r s Y \0\tP \"] ki - X \0 \f /! HU >Cr P$% nR z g 3 t ~q3 اٴٴ(M 14&？\r d: ex j p . Y o | ӎu OO. \v]？} 〜 E: BLןԘ6+ 1岳Yy'ͧ〜#5ϩit25%毛皮及X0: - 2IC $ M_6zUtJ> C-GYkOR $ PT8 +*] HY \" $ ??-?r?? H3\f8Jd Q(: G E r Rܔ ܔ W <] $ i> 8 \b p \= 4 \f > & $ \ v C C vC x p | \"b9 ʤ\r%i w@ \t r M ! G jP 8.D k X't J /\v! r y\ f7 < \",\a/IK rҿ5;} H + QIO] 8cnAGڟU2>

Answer 1

既然你过世了

req.Headers.Add("Accept-Encoding", "gzip,deflate,sdch"); 

我会说你的代理压缩流然后再发回给你.

检查Response的标头以检查编码.