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POWhy does this code for checking proxy validity crash?
 

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  1. POWhy does this code for checking proxy validity crash?
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    <p>I have the following code in my program. When I try to check if the proxy is a valid proxy or not it crashes my program. Any ideas how to fix this? I'm using indy 10.</p> <pre><code>if checkproxy('http://www.google.com') label1.text:='Good' else label1.text:='bad'; </code></pre> <p>If I try to call another idHTTP connect after requesting checkproxy it crashes the program.</p> <p>This is the actual code.... That returns the error...</p> <p><pre><code> function TregForm.webSession(sURL : ansistring) : ansistring; var sstream : Tstringstream; httpcon : TIdHTTP; antifreeze : TIdAntiFreeze; begin result := ''; sstream := tstringstream.Create(''); try if length(SettingsForm.edtProxyServer.text) >= 7 then // 0.0.0.0 if checkproxy('<a href="http://www.google.com" rel="nofollow noreferrer">http://www.google.com</a>') then begin antifreeze := TIdAntiFreeze.Create(nil); httpcon := TIdHTTP.create; httpcon.ProxyParams.BasicAuthentication:=true; httpcon.ProxyParams.ProxyPassword:=SettingsForm.edtProxyPass.Text; httpcon.ProxyParams.ProxyPort:=strtoint(SettingsForm.edtProxyPort.Text); httpcon.ProxyParams.ProxyServer:=SettingsForm.edtProxyServer.Text; httpcon.ProxyParams.ProxyUsername:=SettingsForm.edtProxyUserName.Text; end else begin showmessage('Proxy Server Not Working.. Attempting to bypass the Proxy'); antifreeze := TIdAntiFreeze.Create(nil); httpcon := TIdHTTP.create; //httpcon.Request.ProxyConnection:=''; //httpcon.ProxyParams.BasicAuthentication:=false; //httpcon.ProxyParams.ProxyPassword:=''; //httpcon.ProxyParams.ProxyPort:=0; //httpcon.ProxyParams.ProxyServer:=''; //httpcon.ProxyParams.ProxyUsername:=''; end; httpcon.HandleRedirects := true; antifreeze.Active := true; HttpCon.Get(sURL,sstream); result := utf8towidestring(sstream.DataString); except httpcon.Disconnect; end; antifreeze.Active := false; freeandnil(httpcon); freeandnil(antifreeze); freeandnil(sstream); end;</p> <p>function TregForm.checkproxy(sURL : ansistring) : boolean; var //sstream : Tstringstream; httpcon : TIdHTTP; antifreeze : TIdAntiFreeze; begin result := true; try antifreeze := TIdAntiFreeze.Create(nil); httpcon := TIdHTTP.create; //sstream := tstringstream.Create(''); httpcon.ProxyParams.BasicAuthentication:=true; httpcon.ProxyParams.ProxyPassword:=SettingsForm.edtProxyPass.Text; httpcon.ProxyParams.ProxyPort:=strtoint(SettingsForm.edtProxyPort.Text); httpcon.ProxyParams.ProxyServer:=SettingsForm.edtProxyServer.Text; httpcon.ProxyParams.ProxyUsername:=SettingsForm.edtProxyUserName.Text;</p> <pre><code>httpcon.HandleRedirects := true; antifreeze.Active := true; HttpCon.Request.ProxyConnection:=SettingsForm.edtProxyServer.Text; HttpCon.head(sURL); httpCon.Disconnect; </code></pre> <p>except on E: EIdException do begin result:=false; end; On E:exception do begin //showmessage('External error:' + #13#10 + E.Message); showmessage('Proxy Settings Error'); result:=false; end; end; antifreeze.Active := false; freeandnil(httpcon); freeandnil(antifreeze); //freeandnil(sstream); end;</pre></code></p> <p>Error mesage: Exception AccessViolation in module key.exe at E001B844A. Access violation at address 005B844A in module 'key.exe'. Read of address 00000000.</p>
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      1. POWhy does this code for checking proxy validity crash?
      1. USJeroen Wiert Pluimers
      1. VTFavorite
    1. COWhat do you mean when you say "it crashes"?
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      1. POWhy does this code for checking proxy validity crash?
      1. USRob Kennedy
    2. COI get a run time error, and the program crashes, and wants to send the crash data to microsoft.
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      1. POWhy does this code for checking proxy validity crash?
      1. USBrad
    3. COI cut/pasted actual code... When I run the program with Debugger Off It immediately pops up with the Please tell Microsoft about this problem message. And then gives the error message as noted. When I run with the debugger on it gives me a Break notice, but does not break to a line of code causing the problem.
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      1. POWhy does this code for checking proxy validity crash?
      1. USBrad
 

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