/*************************************************************************************************************************/
// GET CONTENT
/// <summary>
/// download https page and parse title from it </summary>
public static string GetWebPageTitle(
string url,
string proxy_uri = "",
string proxy_password = "",
string proxy_username = "",
int level = 0
)
{
string page = Network.GetWebPage(
url,
proxy_uri,
proxy_password,
proxy_username,
level = 0,
null,
false
);
string title = "";
try {
title = Patterns.MatchWebPageTitle(page);
}
catch (Exception ex)
{
Program.log.Write("get link name error: " + ex.Message);
}
return((title.Trim() == "")? url : title.Trim());
}
/// <summary>
/// download https page and parse title from it </summary>
public static string GetWebPage(
string url,
string proxy_uri = "",
string proxy_password = "",
string proxy_username = "",
int level = 0,
CookieContainer cookieContainer = null,
bool skiphttps = false
)
{
Program.log.Write("get title from: " + url);
if (skiphttps)
{
url = url.Replace("https:", "http:");
}
string page = "";
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.AllowAutoRedirect = false;
request.UseDefaultCredentials = true;
request.Timeout = 2000;
if (proxy_uri != "" ||
proxy_password != "" ||
proxy_username != ""
)
{
// set proxy credentials
WebProxy myProxy = new WebProxy();
if (proxy_uri != "")
{
Uri newUri = new Uri(proxy_uri);
myProxy.Address = newUri;
}
if (proxy_password != "" ||
proxy_username != ""
)
{
myProxy.Credentials = new NetworkCredential(
proxy_username,
proxy_password
);
}
request.Proxy = myProxy;
}
else
{
request.Proxy = WebRequest.GetSystemWebProxy();
}
if (cookieContainer == null)
{
cookieContainer = new CookieContainer();
}
if (cookieContainer != null)
{
request.CookieContainer = cookieContainer;
}
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if ((int)response.StatusCode >= 300 && (int)response.StatusCode <= 399)
{
string uriString = response.Headers["Location"];
if (level < 10)
{
return(Network.GetWebPage(
uriString,
proxy_uri,
proxy_password,
proxy_username,
level + 1,
cookieContainer,
skiphttps
));
}
}
Stream resStream = response.GetResponseStream();
MemoryStream memoryStream = new MemoryStream();
resStream.CopyTo(memoryStream);
// read stream with utf8
memoryStream.Seek(0, SeekOrigin.Begin);
using (StreamReader reader = new StreamReader(memoryStream)) {
page = reader.ReadToEnd();
}
string encoding = Patterns.MatchWebPageEncoding(page);
// try redirect
if (level < 10)
{
string redirect = Patterns.MatchWebPageRedirectUrl(page);
if (redirect.Trim() != "")
{
Uri.TryCreate(new Uri(url), redirect, out Uri result);
return(Network.GetWebPage(
result.ToString(),
proxy_uri,
proxy_password,
proxy_username,
level + 1,
cookieContainer,
skiphttps
));
}
}
// use different encoding
if (encoding.Trim() != "" && encoding.ToLower() != "utf-8")
{
memoryStream.Seek(0, SeekOrigin.Begin);
using (StreamReader reader2 = new StreamReader(memoryStream, System.Text.Encoding.GetEncoding(encoding)))
{
page = reader2.ReadToEnd();
}
}
}
catch (Exception ex)
{
Program.log.Write("get link name error: " + ex.Message);
}
return(page);
}
