Some processing of C # HttpWebRequest HTTPS

First look at the request method

1    Public stringGet_request (2             stringstrURL,3Cookiecontainer _cookie =NULL,4             stringStrhost ="",5             stringStrrefer ="",6             stringStrorigin ="",7             BOOLBlnhttps =false,8dictionary<string,string> lstheads =NULL,9             BOOLBlnkeepalive=false,Ten             stringStrencoding ="Utf-8", One             stringStrcontenttype ="", A             stringstrcertfile="", -             stringStraccept ="text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", -             stringStruseragent ="mozilla/5.0 (Windows NT 6.1; WOW64) applewebkit/537.36 (khtml, like Gecko) chrome/45.0.2454.101 safari/537.36", the             BOOLBlnallowautoredirect =true, -             intInttimeout = +* -) -         { - HttpWebRequest request; + HttpWebResponse response; -Request =(HttpWebRequest) webrequest.create (strURL); +             if(BLNHTTPS) A             { atServicepointmanager.servercertificatevalidationcallback =NewRemotecertificatevalidationcallback (CheckValidationResult);  -Request. ProtocolVersion =Httpversion.version10; -  -Servicepointmanager.securityprotocol =securityprotocoltype.tls12; -  -             }            inRequest. KeepAlive =blnkeepalive; -Request. Accept =straccept; toRequest. Timeout =inttimeout; +Request. Method ="GET"; -Request. Credentials =CredentialCache.DefaultCredentials; theRequest. UserAgent =struseragent; *Request. AllowAutoRedirect =Blnallowautoredirect; $Request. Proxy =NULL;Panax Notoginseng             if(!string. IsNullOrEmpty (Strcontenttype)) -             { theRequest. ContentType =Strcontenttype; +             } A             if(_cookie! =NULL) the             { +Request. Cookiecontainer =_cookie; -             } $             if(!string. IsNullOrEmpty (strhost)) $             { -Request. Host =Strhost; -             } the             if(!string. IsNullOrEmpty (Strrefer)) -             {WuyiRequest. Referer =Strrefer; the             } -             if(!string. IsNullOrEmpty (strorigin)) Wu             { -Request. Headers.add ("Origin", strorigin); About             } $             if(Lstheads! =NULL&& Lstheads.count >0) -             { -                 foreach(varIteminchlstheads) -                 { A request. Headers.add (item. Key, item. Value); +                 } the             } -Response =(HttpWebResponse) request. GetResponse (); $             varSR =NewStreamReader (response. GetResponseStream (), encoding.getencoding (strencoding)); the             stringStrresult =Sr. ReadToEnd (); the Sr. Close (); the request. Abort (); the Response. Close (); -             returnstrresult; in  the         } the         Private Static BOOLCheckValidationResult (Objectsender, X509Certificate certificate, X509chain chain, sslpolicyerrors errors) About         { the             return true;//Always accept the}

The code within the IF (BLNHTTPS) is the processing done for HTTPS

It is important to note that

1, when the use of HTTPS requests need to determine which encryption protocol is, this can be found through Firefox, such as

2. Only Framework4.5 and above support 1.1 and 1.2 protocol

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Some processing of C # HttpWebRequest HTTPS