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  • Assorted list of what's new in Delphi [Language, RTL, VCL]?

    - by utku_karatas
    Hi gents, As someone who's been stuck at the older versions of Delphi and upgraded to D2010 lately, I figure I still use the language, RTL and VCL features from the D5 era and refrain from using these new features as the documents on those are somewhat decentralized around the blogosphere. So I'd like to ask if there was an assorted list like what's new docs of Python's - clear and concise to the point. Btw, please no screencasts. They seem to be quite abundant lately (probably because of CodeRages) but I find them very unintuitive to learn from. Let's leave that docs in video format thing to RoR community, shall we :).

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  • Does a VCL OrgChart component with decent features exists? Is there a viable alternative?

    - by user193655
    I am using DevExpress OrgChart component that is still maintained but not developed since 2003 (fortunately bugs are fixed, but nothing more). Honestly this component, even if it starts to look too old still suffices my requirements except for 2 things: 1) it doesn't support at all the staff feature, for understanding what I mean see this image (where the items in staff are Administration, Communication, IT, Special Projects). 2) it arranges the items without optimizing the space, for example if there are 3 items at top level, and only the second item has 2 childs, the top items items are drawn more distantly, because of the 2 childs, there is no an option for "shirinking" the diagram. Of course the component misses tons of the features one would expect from an OrgChart tool, but in my case Those 2, and expecially (1) are important, the rest is lack of eye-candy. I look for VCL components, but if (as I fear, since I never found it) such component doesn't exist) I can see the following alternatives: i) using Hydra with .net winforms components ii) using ActiveX components. Between the 2 I would prefer ActiveX because of the .NET deployment hell (what I like about Delphi is that you ship the exe to the customer witn Win2k and it works). Anyway I never used an activeX control and I don't know which are the deployment issues, but I fear I will lose the opportunity of replacing an exe and upgrading the software. iii) hire a delphi component develoeper that can customize the DevEx component by adding feature (1) and maybe (2). I am stuck.

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  • Using VCL for the web (intraweb) as a trick for adding web interface to a legacy non-tiered (2 tiers

    - by user193655
    My team is maintaining a huge Client Server win32 Delphi application. It is a client/server application (Thick client) that uses DevArt (SDAC) components to connect to SQL Server. The business logic is often "trapped" in Component's event handlers, anyway with some degree of refactoring it is doable to move the business logic in common units (a big part of this work has already been done during refactoring... Maintaing legacy applications someone else wrote is very frustrating, but this is a very common job). Now there is the request of a web interface, I have several options of course, in this question i want to focus on the VCL for the web (intraweb) option. The idea is to use the common code (the same pas files) for both the client/server application and the web application. I heard of many people that moved legacy apps from delphi to intraweb, but here I am trying to keep the Thick client too. The idea is to use common code, may be with some compiler directives to write specific code: {$IFDEF CLIENTSERVER} {here goes the thick client specific code} {$ELSE} {here goes the Intraweb specific code} {$ENDIF} Then another problem is the "migration plan", let's say I have 300 features and on the first release I will have only 50 of them available in the web application. How to keep track of it? I was thinking of (ab)using Delphi interfaces to handle this. For example for the User Authentication I could move all the related code in a procedure and declare an interface like: type IUserAuthentication= interface['{0D57624C-CDDE-458B-A36C-436AE465B477}'] procedure UserAuthentication; end; In this way as I implement the IUserAuthentication interface in both the applications (Thick Client and Intraweb) I know that That feature has been "ported" to the web. Anyway I don't know if this approach makes sense. I made a prototype to simulate the whole process. It works for a "Hello world" application, but I wonder if it makes sense on a large application or this Interface idea is only counter-productive and can backfire. My question is: does this approach make sense? (the Interface idea is just an extra idea, it is not so important as the common code part described above) Is it a viable option? I understand it depends a lot of the kind of application, anyway to be generic my one is in the CRM/Accounting domain, and the number of concurrent users on a single installation is typically less than 20 with peaks of 50. EXTRA COMMENT (UPDATE): I ask this question because since I don't have a n-tier application I see Intraweb as the unique option for having a web application that has common code with the thick client. Developing webservices from the Delphi code makes no sense in my specific case, so the alternative I have is to write the web interface using ASP.NET (duplicating the business logic), but in this case I cannot take advantage of the common code in an easy way. Yes I could use dlls maybe, but my code is not suitable for that.

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  • Capturing USB Plug/Unplug events in Firemonkey

    - by radsdau
    [RAD Studio XE3 / C++] I have a FMX project running in Windows only at this stage, but I need to detect events when USB devices are connected and disconnected. I have a similar VCL app that can do this fine, but the Application-HookMainWindow is not exposed in FMX (only VCL). Is there an elegant way to handle this? Or do I have to hack some VCL stuff into my FMX app to make that work? I'd imagine I have to abstract it so I can support other platforms down the track. For the meantime though I need to get the Windows solution working. If the 'VCL hack' thing is required, how would I reference the vcl::Forms::Application from within my Fmx app? Cheers.

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  • WPF custom user widgets. Will UI components be standardized?

    - by Andrew Florko
    There are lots of articles and video lessons that describe how to create your unique user widget (graphical control) with WPF. There are tons of technical details what is behind the scene and I feel people enthusiasm with ability to customize widgets as never before. I remember those days when VCL library (Delphi) appeared and there was the same enthusiasm in VCL widgets area. Ability to create VCL controls was nearly the must when you was applying for a job as Delphi developer. This situation continued for several years till professional sophisticated 3'd party UI libraries appeared. Hardly you'll have to create your own VCL widget nowadays. Will WPF widgets enthusiasm die as VCL one?

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  • RichEdit VCL and URLs. Workarounds for OnPaint Issues.

    - by HX_unbanned
    So, issue is with the thing Delphi progies scare to death - Rich Edit in Windows ( XP and pre-XP versions ). Situation: I have added EM_AUTOURLDETECTION in OnCreate of form. Target - RichEdit1. Then, I have form, that is "collapsed" after showing form. RichEdit Control is sattic, visible and enabled, but it is "hidden" because form window is collapsed. I can expand and collapse form, using Button1 and changing forms Constraints and Size properties. After first time I expand form, the URL inside RichEdit1 control is highlighted. BUT - After second, third, fourth, etc... time I Collapse and Expand form, the RichEdit1 Control does not highlight URL anymore. I have tried EM_SETTEXTMODE messages, also WM_UPDATEUISTATE, also basic WM_TEXT message - no luck. It sems like this merssage really works ( enables detection ) while sending keyboard strokes ( virtual keycodes ), but not when text has been modified. Also - I am thinking to rewrite code to make RichEdit Control dynamic. Would this fix the problem? Maybe solution is to override OnPaint / OnDraw method to avoid highlight ( formatting ) losing when collapsing or expanding form? Weird is that my Embarcadero Documentation says this function must work in any moment text has been modified. Why it does not work? Any help appreciated. I am making this Community Wiki because this is common problem and togewther we cam find solution, right? :) Also - follow-ups and related Question: http://stackoverflow.com/questions/738694/override-onpaint http://stackoverflow.com/questions/478071/how-to-autodetect-urls-in-richedit-2-0 http://www.vbforums.com/archive/index.php/t-59959.html

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  • Which bug in the Delphi IDE / VCL do you despise the most?

    - by Ben Daniel
    I've been working in Delphi 7 for the last 6 years now and have learnt to merely submit to the instablity of the IDE. For example, there are particular projects I've inherited which, when working on, I cannot use the CTRL+SPACE dropdown symbol list in the Delphi editor without getting an Access Violation error, this would easily top my list but there are many more. I'd like to know which bugs frustrate you the most.

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  • Varnish "FetchError no backend connection" error

    - by clueless-anon
    Varnishlog: 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829925 1.0 12 SessionOpen c 79.124.74.11 3063 :80 12 SessionClose c EOF 12 StatSess c 79.124.74.11 3063 0 1 0 0 0 0 0 0 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829928 1.0 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829931 1.0 12 SessionOpen c 108.62.115.226 46211 :80 12 ReqStart c 108.62.115.226 46211 467185881 12 RxRequest c GET 12 RxURL c / 12 RxProtocol c HTTP/1.0 12 RxHeader c User-Agent: Pingdom.com_bot_version_1.4_(http://www.pingdom.com/) 12 RxHeader c Host: www.mysite.com 12 VCL_call c recv lookup 12 VCL_call c hash 12 Hash c / 12 Hash c www.mysite.com 12 VCL_return c hash 12 VCL_call c miss fetch 12 FetchError c no backend connection 12 VCL_call c error deliver 12 VCL_call c deliver deliver 12 TxProtocol c HTTP/1.1 12 TxStatus c 503 12 TxResponse c Service Unavailable 12 TxHeader c Server: Varnish 12 TxHeader c Content-Type: text/html; charset=utf-8 12 TxHeader c Retry-After: 5 12 TxHeader c Content-Length: 418 12 TxHeader c Accept-Ranges: bytes 12 TxHeader c Date: Wed, 27 Jun 2012 20:45:31 GMT 12 TxHeader c X-Varnish: 467185881 12 TxHeader c Age: 1 12 TxHeader c Via: 1.1 varnish 12 TxHeader c Connection: close 12 Length c 418 12 ReqEnd c 467185881 1340829931.192433119 1340829931.891024113 0.000051022 0.698516846 0.000074035 12 SessionClose c error 12 StatSess c 108.62.115.226 46211 1 1 1 0 0 0 256 418 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829934 1.0 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829937 1.0 netstat -tlnp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 3086/nginx tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1915/varnishd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1279/sshd tcp 0 0 127.0.0.2:25 0.0.0.0:* LISTEN 3195/sendmail: MTA: tcp 0 0 127.0.0.2:6082 0.0.0.0:* LISTEN 1914/varnishd tcp 0 0 127.0.0.2:9000 0.0.0.0:* LISTEN 1317/php-fpm.conf) tcp 0 0 127.0.0.2:3306 0.0.0.0:* LISTEN 1192/mysqld tcp 0 0 127.0.0.2:587 0.0.0.0:* LISTEN 3195/sendmail: MTA: tcp 0 0 127.0.0.2:11211 0.0.0.0:* LISTEN 3072/memcached tcp6 0 0 :::8080 :::* LISTEN 3086/nginx tcp6 0 0 :::80 :::* LISTEN 1915/varnishd tcp6 0 0 :::22 :::* LISTEN 1279/sshd /etc/nginx/site-enabled/default server { listen 8080; ## listen for ipv4; this line is default and implied listen [::]:8080 default ipv6only=on; ## listen for ipv6 root /usr/share/nginx/www; index index.html index.htm index.php; # Make site accessible from http://localhost/ server_name localhost; location / { # First attempt to serve request as file, then # as directory, then fall back to index.html try_files $uri $uri/ /index.html; } location /doc { root /usr/share; autoindex on; allow 127.0.0.2; deny all; } location /images { root /usr/share; autoindex off; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # #error_page 500 502 503 504 /50x.html; #location = /50x.html { # root /usr/share/nginx/www; #} # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # proxy_pass http://127.0.0.1; #} # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # location ~ \.php$ { fastcgi_pass 127.0.0.2:9000; fastcgi_index index.php; include fastcgi_params; } # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # #location ~ /\.ht { # deny all; #} } /etc/nginx/sites-enabled/www.mysite.com.vhost server { listen 8080; server_name www.mysite.com mysite.com.net; root /var/www/www.mysite.com/web; if ($http_host != "www.mysite.com") { rewrite ^ http://www.mysite.com$request_uri permanent; } index index.php index.html; location = /favicon.ico { log_not_found off; access_log off; } location = /robots.txt { allow all; log_not_found off; access_log off; } # Deny all attempts to access hidden files such as .htaccess, .htpasswd, .DS_Store (Mac). location ~ /\. { deny all; access_log off; log_not_found off; } location / { try_files $uri $uri/ /index.php?$args; } # Add trailing slash to */wp-admin requests. rewrite /wp-admin$ $scheme://$host$uri/ permanent; location ~* \.(jpg|jpeg|png|gif|css|js|ico)$ { expires max; log_not_found off; } location ~ \.php$ { try_files $uri =404; include /etc/nginx/fastcgi_params; fastcgi_pass 127.0.0.2:9000; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; } include /var/www/www.mysite.com/web/nginx.conf; location ~ /nginx.conf { deny all; access_log off; log_not_found off; } } /etc/varnish/default.vcl # This is a basic VCL configuration file for varnish. See the vcl(7) # man page for details on VCL syntax and semantics. # # Default backend definition. Set this to point to your content # server. # backend default { .host = "127.0.0.2"; .port = "8080"; # .connect_timeout = 600s; #.first_byte_timeout = 600s; # .between_bytes_timeout = 600s; # .max_connections = 800; Note: uncommenting the last four options at default.vcl made no difference. cat /etc/default/varnish # Configuration file for varnish # # /etc/init.d/varnish expects the variables $DAEMON_OPTS, $NFILES and $MEMLOCK # to be set from this shell script fragment. # # Should we start varnishd at boot? Set to "yes" to enable. START=yes # Maximum number of open files (for ulimit -n) NFILES=131072 # Maximum locked memory size (for ulimit -l) # Used for locking the shared memory log in memory. If you increase log size, # you need to increase this number as well MEMLOCK=82000 # Default varnish instance name is the local nodename. Can be overridden with # the -n switch, to have more instances on a single server. INSTANCE=$(uname -n) # This file contains 4 alternatives, please use only one. ## Alternative 1, Minimal configuration, no VCL # # Listen on port 6081, administration on localhost:6082, and forward to # content server on localhost:8080. Use a 1GB fixed-size cache file. # # DAEMON_OPTS="-a :6081 \ # -T localhost:6082 \ # -b localhost:8080 \ # -u varnish -g varnish \ # -S /etc/varnish/secret \ # -s file,/var/lib/varnish/$INSTANCE/varnish_storage.bin,1G" ## Alternative 2, Configuration with VCL # # Listen on port 6081, administration on localhost:6082, and forward to # one content server selected by the vcl file, based on the request. Use a 1GB # fixed-size cache file. # DAEMON_OPTS="-a :80 \ -T 127.0.0.2:6082 \ -f /etc/varnish/default.vcl \ -S /etc/varnish/secret \ -s file,/var/lib/varnish/$INSTANCE/varnish_storage.bin,1G" If you need any other info let me know. I am all out of clue as to whats the problem.

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  • How to test using conditional defines if the application is Firemonkey one?

    - by Gad D Lord
    I use DUnit. It has an VCL GUITestRunner and a console TextTestRunner. In an unit used by both Firemonkey and VCL Forms applications I would like to achieve the following: If Firemonkey app, if target is OS X, and executing on OS X - TextTestRunner If Firemonkey app, if target is 32-bit Windows, executing on Windows - AllocConsole + TextTestRunner If VCL app - GUITestRunner {$IFDEF MACOS} TextTestRunner.RunRegisteredTests; // Case 1 {$ELSE} {$IFDEF MSWINDOWS} AllocConsole; {$ENDIF} {$IFDEF FIREMONKEY_APP} // Case 2 <--------------- HERE TextTestRunner.RunRegisteredTests; {$ELSE} // Case 3 GUITestRunner.RunRegisteredTests; {$IFEND} {$ENDIF} Which is the best way to make Case 2 work?

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  • Has anyone used RemObjects' Hydra to mix a large Delphi project with new C# additions?

    - by robsoft
    (Hopefully this is deemed suitable for Programmers, not StackOverflow - I could imagine it getting closed at SO because there's no obvious 'right' answer.) We have a large Delphi 2007 VCL project that uses things like DBXpress, Report Builder, DevExpress and TMS components (both visual and non-visual) etc. For reasons I won't bore you with, the company would like to start adding new modules to the program using .Net (via C# in particular). Rewriting from scratch isn't an option and given the heavy use of Report Builder and various other bits of Delphi-specific 3rd party code, I suspect that using something like TurnSharp to regenerate a C# project wouldn't work well either. Ideally we want to keep our Win32 VCL Delphi code but add new modules (plug-ins, sections of contained functionality like wizards etc) via C#. So we're considering RemObjects' Hydra, and in the next few weeks will probably have a go at evaluating it on a smaller-but-representative project first. I wondered if anyone had experience of doing this kind of thing with Hydra...?

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  • How to immediate send mail without prompt confirmation dialog

    - by lmengyew
    I'm using Delphi XE3 and below is my sample application: unit Unit1; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls; type TForm1 = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject); private function Send(const FromAddr, ToAddr, Subject: String; const AttachFiles: array of string; const MsgBody: String): boolean; end; var Form1: TForm1; implementation uses Winapi.Mapi; {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); begin Send('', '[email protected]', 'test', [], ''); end; function TForm1.Send(const FromAddr, ToAddr, Subject: String; const AttachFiles: array of string; const MsgBody: String): boolean; var Msg: TMapiMessage; lpSender, lpRecipient: TMapiRecipDesc; Attach: array of TMapiFileDesc; SMTP: TFNMapiSendMail; MAPIModule: HModule; i: integer; S: string; begin Result := False; FillChar(Msg, SizeOf(Msg), 0); Msg.lpszSubject := PAnsiChar(UTF8String(Subject)); Msg.lpszNoteText := PAnsiChar(UTF8String(MsgBody)); if FromAddr <> '' then begin lpSender.ulRecipClass := MAPI_ORIG; lpSender.lpszName := PAnsiChar(UTF8String(FromAddr)); lpSender.lpszAddress := PAnsiChar(UTF8String(FromAddr)); lpSender.ulReserved := 0; lpSender.ulEIDSize := 0; lpSender.lpEntryID := Nil; Msg.lpOriginator := @lpSender; end; if ToAddr <> '' then begin lpRecipient.ulRecipClass := MAPI_TO; lpRecipient.lpszName := PAnsiChar(UTF8String(ToAddr)); lpRecipient.lpszAddress := PAnsiChar(UTF8String(ToAddr)); lpRecipient.ulReserved := 0; lpRecipient.ulEIDSize := 0; lpRecipient.lpEntryID := Nil; Msg.nRecipCount := 1; Msg.lpRecips := @lpRecipient; end; SetLength(Attach, Length(AttachFiles)); FillChar(Attach[0], Length(Attach) * SizeOf(TMapiFileDesc), 0); i := 0; for S in AttachFiles do begin Attach[i].nPosition := Cardinal($FFFFFFFF); Attach[i].lpszPathName := PAnsiChar(UTF8String(S)); Inc(i); end; Msg.nFileCount := Length(AttachFiles); if Msg.nFileCount = 0 then Msg.lpFiles := nil else Msg.lpFiles := @Attach[0]; MAPIModule := LoadLibrary(PChar(MAPIDLL)); if MAPIModule <> 0 then begin try @SMTP := GetProcAddress(MAPIModule, 'MAPISendMail'); if @SMTP <> nil then Result := SMTP(0, Application.Handle, Msg, 0, 0) = SUCCESS_SUCCESS; finally FreeLibrary(MAPIModule); end; end; end; end. When i click the Button1, it will prompt the confirmation dialog as print screen. My question is how to immediate send mail without prompt the confirmation dialog? Is this possible to achieve?

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  • Varnish Running VCC-compiler failed on purge

    - by FLX
    I've been following this guide which uses this default.vcl. However, when starting Varnish I get the following error: * Starting HTTP accelerator [fail] storage_malloc: max size 1024 MB. Message from VCC-compiler: Expected '(' got ';' (program line 341), at (input Line 43 Pos 22) purge; ---------------------# Running VCC-compiler failed, exit 1 VCL compilation failed Which means that there is something wrong with purge here: sub vcl_hit { if (req.request == "PURGE") { purge; error 200 "Purged."; } } I don't see anything wrong, can someone explain? Thanks!

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  • Varnish, hide port number

    - by George Reith
    My set up is as follows: OS: CentOS 6.2 running on an OpenVZ virtual machine. Web server: Nginx listening on port 8080 Reverse proxy: Varnish listening on port 80 The problem is that Varnish redirects my requests to port 8080 and this appears in the address bar like so http://mysite.com:8080/directory/, causing relative links on the site to include the port number (8080) in the request and thus bypassing Varnish. The site is powered by WordPress. How do I allow Varnish to use Nginx as the backend on port 8080 without appending the port number to the address? Edit: Varnish is set up like so: I have told the Varnish daemon to listen to port 80 by default. VARNISH_VCL_CONF=/etc/varnish/default.vcl # # # Default address and port to bind to # # Blank address means all IPv4 and IPv6 interfaces, otherwise specify # # a host name, an IPv4 dotted quad, or an IPv6 address in brackets. # VARNISH_LISTEN_ADDRESS= VARNISH_LISTEN_PORT=80 # # # Telnet admin interface listen address and port VARNISH_ADMIN_LISTEN_ADDRESS=127.0.0.1 VARNISH_ADMIN_LISTEN_PORT=6082 # # # Shared secret file for admin interface VARNISH_SECRET_FILE=/etc/varnish/secret # # # The minimum number of worker threads to start VARNISH_MIN_THREADS=1 # # # The Maximum number of worker threads to start VARNISH_MAX_THREADS=1000 # # # Idle timeout for worker threads VARNISH_THREAD_TIMEOUT=120 # # # Cache file location VARNISH_STORAGE_FILE=/var/lib/varnish/varnish_storage.bin # # # Cache file size: in bytes, optionally using k / M / G / T suffix, # # or in percentage of available disk space using the % suffix. VARNISH_STORAGE_SIZE=1G # # # Backend storage specification VARNISH_STORAGE="file,${VARNISH_STORAGE_FILE},${VARNISH_STORAGE_SIZE}" # # # Default TTL used when the backend does not specify one VARNISH_TTL=120 The VCL file that Varnish calls (through an include in default.vcl) consists of: backend playwithbits { .host = "127.0.0.1"; .port = "8080"; } acl purge { "127.0.0.1"; } sub vcl_recv { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { set req.backend = playwithbits; set req.http.Host = regsub(req.http.Host, ":[0-9]+", ""); if (req.request == "PURGE") { if (!client.ip ~ purge) { error 405 "Not allowed."; } return(lookup); } if (req.url ~ "^/$") { unset req.http.cookie; } } } sub vcl_hit { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { if (req.request == "PURGE") { set obj.ttl = 0s; error 200 "Purged."; } } } sub vcl_miss { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { if (req.request == "PURGE") { error 404 "Not in cache."; } if (!(req.url ~ "wp-(login|admin)")) { unset req.http.cookie; } if (req.url ~ "^/[^?]+.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.|)$") { unset req.http.cookie; set req.url = regsub(req.url, "\?.$", ""); } if (req.url ~ "^/$") { unset req.http.cookie; } } } sub vcl_fetch { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { if (req.url ~ "^/$") { unset beresp.http.set-cookie; } if (!(req.url ~ "wp-(login|admin)")) { unset beresp.http.set-cookie; } } }

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  • Varnish doesn't seem to be caching

    - by Charlie Somerville
    I've setup a Varnish cache mirror to sit in front of a file server, but it seems to be endlessly re-downloading data from my file server. There's about 100GB of data in total, but so far Varnish has downloaded 800GB from my file server. I'm using the default VCL file that comes with Varnish and the response headers for files served by the file server are similar to the following: HTTP/1.1 200 OK Cache-Control: max-age=290304000, public Content-Type: image/jpeg Expires: Wed, 29 Dec 2010 21:38:33 GMT Server: Microsoft-IIS/7.0 E-Tag: "8b4723296ab697530768f18b1378b269" Content-Disposition: inline; filename=image046.jpg; X-AspNet-Version: 4.0.30319 X-Powered-By: ASP.NET Date: Thu, 23 Dec 2010 05:38:33 GMT Content-Length: 100592 I'm starting varnishd with the following options: varnish/sbin/varnishd -a 0.0.0.0:80 -f varnish/etc/varnish/default.vcl -s file,varnish/var/lib/varnish/varnish_storage.bin,100G

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  • PerlRegEx vs RegularExpressionsCore Delphi Units

    - by Jan Goyvaerts
    The RegularExpressionsCore unit that is part of Delphi XE is based on the latest class-based PerlRegEx unit that I developed. Embarcadero only made a few changes to the unit. These changes are insignificant enough that code written for earlier versions of Delphi using the class-based PerlRegEx unit will work just the same with Delphi XE. The unit was renamed from PerlRegEx to RegularExpressionsCore. When migrating your code to Delphi XE, you can choose whether you want to use the new RegularExpressionsCore unit or continue using the PerlRegEx unit in your application. All you need to change is which unit you add to the uses clause in your own units. Indentation and line breaks in the code were changed to match the style used in the Delphi RTL and VCL code. This does not change the code, but makes it harder to diff the two units. Literal strings in the unit were separated into their own unit called RegularExpressionsConsts. These strings are only used for error messages that indicate bugs in your code. If your code uses TPerlRegEx correctly then the user should not see any of these strings. My code uses assertions to check for out of bounds parameters, while Embarcadero uses exceptions. Again, if you use TPerlRegEx correctly, you should never get any assertions or exceptions. The Compile method raises an exception if the regular expression is invalid in both my original TPerlRegEx component and Embarcadero’s version. If your code allows the user to provide the regular expression, you should explicitly call Compile and catch any exceptions it raises so you can tell the user there is a problem with the regular expression. Even with user-provided regular expressions, you shouldn’t get any other assertions or exceptions if your code is correct. Note that Embarcadero owns all the rights to their RegularExpressionsCore unit. Like all the other RTL and VCL units, this unit cannot be distributed by myself or anyone other than Embarcadero. I do retain the rights to my original PerlRegEx unit which I will continue to make available for those using older versions of Delphi.

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  • Tough question on WPF, Win32, MFC

    - by Mack
    Let's suppose you're an IT student with a basic knowledge of C++ and C#. Let's suppose that you want to design apps that: need to deliver some performance like archivers, cryptographic algorithms, codecs make use of some system calls have a gui and you want to learn an Api that will enable you to write apps like those described earlier and: is mainstream is future proof entitles you to find a decent job is easy enough - I mean easy like VCL, not easy like winapi So, making these assumptions, what Api will you choose? MFC, WPF, other? I really like VCL and QT, but they're not mainstream and I think few employers will want you to write apps in QT or Visual C++ Builder... Thanks for answers.

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  • Varnish + Nginx + multiple IP addresses

    - by adnan
    This is my first shot at making Varnish work on my dedicated server which hosts 2 domains with 2 separate IP-addresses. My simplified setup is as follows: Nginx conf server { listen ip-address-1:8080; } server { listen ip-address-2:8080; } Varnish vcl backend default { .host = "127.0.0.1"; .port = "80"; } And in the varnish conf I have defined VARNISH_LISTEN_PORT=80 Varnish and Nginx (and php-fpm) are running properly but when I try to go to my website it shows the welcome to nginx page. The headers don't have the x-varnish in it. It seems that for some reason varnish is not listening to port 80. I'm suspecting this has to do with the vcl file where it is listening to the 127.0.0.1 host. I'm running two wordpress sites. Where should I look for to get Varnish working properly? Cheers, Adnan EDIT: Nginx seems to be in 8080 correctly but Varnish is not listening to the right ip address. Using Jens multiple varnish ip addresses netstat -lnp yields: Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 46.105.40.241:8080 0.0.0.0:* LISTEN 21610/nginx tcp 0 0 5.135.166.39:8080 0.0.0.0:* LISTEN 21610/nginx tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 21610/nginx tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN 2544/named tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 1195/vsftpd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1184/sshd tcp 0 0 127.0.0.1:953 0.0.0.0:* LISTEN 2544/named tcp 0 0 46.105.40.241:443 0.0.0.0:* LISTEN 21610/nginx tcp 0 0 5.135.166.39:443 0.0.0.0:* LISTEN 21610/nginx tcp 0 0 127.0.0.1:6082 0.0.0.0:* LISTEN 21350/varnishd tcp 0 0 :::80 :::* LISTEN 21351/varnishd tcp 0 0 ::1:53 :::* LISTEN 2544/named tcp 0 0 :::22 :::* LISTEN 1184/sshd tcp 0 0 ::1:953 :::* LISTEN 2544/named udp 0 0 127.0.0.1:53 0.0.0.0:* 2544/named udp 0 0 ::1:53 :::* 2544/named default.vcl backend ikhebeenbril { .host = "5.135.166.39"; .port = "8080"; } backend sunculture { .host = "46.105.40.241"; .port = "8080"; } sub vcl_recv { if (server.ip == "5.135.166.39") { set req.backend = ikhebeenbril; } else { set req.backend = sunculture; } ... } sub vcl_hash { hash_data(server.ip); if (req.http.host) { hash_data(req.http.host); } hash_data(req.url); if (req.http.Accept-Encoding) { hash_data(req.http.Accept-Encoding); } return (hash); } nginx server blocks server { listen 5.135.166.39:80; listen 5.135.166.39:443 default ssl spdy; server_name www.ikhebeenbril.nl; } server { listen 46.105.40.241:80; listen 46.105.40.241:443 default ssl spdy; server_name www.thesunculture.com; }

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  • Apache 403 after configuring varnish

    - by w0rldart
    I just don't know where else to look and what else to do. I keep getting a 403 error on all my vhosts after setting varnish 3.0 Apacher log: [error] [client 127.0.0.1] client denied by server configuration: /etc/apache2/htdocs Headers: http://domain.com/ GET / HTTP/1.1 Host: domain.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Connection: keep-alive Cookie: __utma=106762181.277908140.1348005089.1354040972.1354058508.6; __utmz=106762181.1348005089.1.1.utmcsr=OTHERDOMAIN.com|utmccn=(referral)|utmcmd=referral|utmcct=/galerias/cocinas Cache-Control: max-age=0 HTTP/1.1 403 Forbidden Vary: Accept-Encoding Content-Encoding: gzip Content-Type: text/html; charset=iso-8859-1 X-Cacheable: YES Content-Length: 223 Accept-Ranges: bytes Date: Sat, 01 Dec 2012 20:35:14 GMT X-Varnish: 1030961813 1030961811 Age: 26 Via: 1.1 varnish Connection: keep-alive X-Cache: HIT ---------------------------------------------------------- /etc/default/varnish: DAEMON_OPTS="-a ip.ip.ip.ip:80 \ -T localhost:6082 \ -f /etc/varnish/main.domain.vcl \ -S /etc/varnish/secret \ -s file,/var/lib/varnish/$INSTANCE/varnish_storage.bin,1G" #-s malloc,256m" My vcl file: http://pastebin.com/axJ57kD8 So, any ideas what I could be missing? Update Just so you know, ports: NameVirtualHost *:8000 Listen 8000 and <VirtualHost 205.13.12.12:8000>

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  • Varnish does not start properly (crashes after startup) with no error messages

    - by Matthew Savage
    I am running Varnish (2.0.4 from the Ubuntu unstable apt repository, though I have also used the standard repository) in a test environment (Virtual Machines) on Ubuntu 9.10, soon to be 10.04. When I have a working configuration and the server starts successfully it seems like everything is fine, however if, for whatever reason, I stop and then restart the varnish daemon it doesn't always startup properly, and there are no errors going into syslog or messages to indicate what might be wrong. If I run varnish in debug mode (-d) and issue start when prompted then 7 times out of time it will run, but occasionally it will just shut down 'silently'. My startup command is (the $1 allows for me to pass -d to the script this lives in): varnishd -a :80 $1 \ -T 127.0.0.1:6082 \ -s malloc,1GB \ -f /home/deploy/mysite.vcl \ -u deploy \ -g deploy \ -p obj_workspace=4096 \ -p sess_workspace=262144 \ -p listen_depth=2048 \ -p overflow_max=2000 \ -p ping_interval=2 \ -p log_hashstring=off \ -h classic,5000009 \ -p thread_pool_max=1000 \ -p lru_interval=60 \ -p esi_syntax=0x00000003 \ -p sess_timeout=10 \ -p thread_pools=1 \ -p thread_pool_min=100 \ -p shm_workspace=32768 \ -p thread_pool_add_delay=1 and the VCL looks like this: # nginx/passenger server, HTTP:81 backend default { .host = "127.0.0.1"; .port = "81"; } sub vcl_recv { # Don't cache the /useradmin or /admin path if (req.url ~ "^/(useradmin|admin|session|sessions|login|members|logout|forgot_password)") { pipe; } # If cache is 'regenerating' then allow for old cache to be served set req.grace = 2m; # Forward to cache lookup lookup; } # This should be obvious sub vcl_hit { deliver; } sub vcl_fetch { # See link #16, allow for old cache serving set obj.grace = 2m; if (req.url ~ "\.(png|gif|jpg|swf|css|js)$") { deliver; } remove obj.http.Set-Cookie; remove obj.http.Etag; set obj.http.Cache-Control = "no-cache"; set obj.ttl = 7d; deliver; } Any suggestions would be greatly appreciated, this is driving me absolutely crazy, especially because its such an inconsistent behaviour.

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  • The Coolest Parts of Windows API

    - by Andreas Rejbrand
    I have noticed that there are quite a few community wikis about "Tips & Tricks" or "Hidden Features" in programming languages and APIs here at Stack Overflow. But I could not find any about my own personal favourites: Win32 API and Delphi. Therefore I start my "own" CW about Win32 API. There are (at least) two kinds of Win API users: those that have been brought up using Windows API in C/C++, and those that have been brought up using some level of abstraction above the Windows API. I belong to the latter category, being brought up using Delphi's VCL. But over the last five years, I have become increasingly interested in the underlaying API of the Windows operating system, and today I work a lot with it. Depending on which category a programmer belongs to, he (or possibly she) will think that different things are "cool" in the Windows API. For instance, whereas a VCL-brought up developer might think it it very cool to var errIcon: HICON; begin errIcon := LoadIcon(0, IDI_ERROR); DrawIcon(Canvas.Handle, 10, 10, errIcon), a programmer brought up using Windows API in C will not be as impressed. But no matter how you are "brought up": what are the coolest "tricks" in Windows API? I start by listing a few of my own favourites, some of which are more "cool" than "useful", though: LoadIcon and MessageBeep can load/play system default icons and sounds. Open the CD tray: mciSendString('Set cdaudio door open wait', nil, 0, 0); Fade out the screen (Windows Vista and later) and turn of the monitor: SendMessage(Application.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, 2); GetWindowDC(GetDesktopWindow) returns the DC of the desktop.

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  • Delphi fastMM doesn't work with operator "IS"

    - by Joc02
    I work on Delphi project who interac with many other small libraries. I use FastMM4 and I would like work with complex classes passed on dll parameter. So for exemple I send my form to my dll. Into the dll I test the type of parameter with the operator "IS". But into the Dll the operator "IS" return always "false" Exemple library Dll; uses FastMM4, System.SysUtils, System.Classes, Vcl.Dialogs, Vcl.Forms; {$R *.res} procedure Complex(L : TObject);stdcall; begin if L is TForm then showmessage('Ok') else showmessage('Pas ok') ; if L is TCustomFrame then showmessage('Ok') else showmessage('Pas ok') end; exports Complex; begin end. And the call procedure TffsIsOperator.Button2Click(Sender: TObject); var MaDLL : THandle; Proc : procedure (l : TForm); begin try MaDLL := LoadLibrary(PChar('Dll.dll')); @Proc := GetProcAddress(MaDLL, 'Complex'); Proc(self); finally FreeLibrary(MaDLL); end; end;

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  • OnConnect event not firing when using TClientSocket inside a TThread on non-blocking mode

    - by mathematician1975
    I am trying to make use of Borlands TClientSocket component in non-blocking mode inside a multithreaded C++ Windows application. I am creating multiple threads (classes derived from TThread), each of which creates its own TClientSocket object. I then assign member functions of the thread class to act as event handlers for the OnConnect, OnDisconnect and OnSocketError events of the socket. The problem I am having here is that whenever I call the TClientSocket::Open() function from within the TThread::Execute() function, the OnConnect event never fires. However, When I call the Open() function from the VCL thread prior to the TThread::Execute() function getting called, all of the events fire and I can use the thread-socket combination as I would like. Now I have not read anything in documentation that says that TClientSocket should not be used in non-blocking mode when used inside a thread, but it appears to me that there is perhaps something wrong conceptually in the way I am trying to use this class. Borland documentation is quite poor on the subject and these components have now been deprecated so reliable information is hard to come by. Despite being deprecated I have to use them as there is no alternative in the Builder 6 package I have. Can anyone please advise me if there is a right/wrong way to use TThread and a non-blocking TClientSocket in combination. I have never had problems using it as part of the VCL thread and never had problems using TServerSocket before and I really cannot understand why some events are not firing.

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  • Need Varnish configuration advice

    - by Patrick
    Hello fellows, I need some advice here for default.vcl. Here's the rules: Only cache pages with urls that contains '/c/', the rest will pass Set the cache expiry to 3 hours Only cache and serve from cache if cookie 'abc' and cookie 'xyz' is empty Thank you!

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