X-Git-Url: http://www.lcore.org/git/lcore.git/blobdiff_plain/9b641f7a6cda5781002a12c901addc01787003e9..d0705a212a4b27b3cf9a3aaf007db8b6db443092:/lcore.pas

diff --git a/lcore.pas b/lcore.pas
index da0fd66..0f6eaef 100755
--- a/lcore.pas
+++ b/lcore.pas
@@ -26,16 +26,22 @@ interface
       {$ifdef VER1_0}
         linux,
       {$else}
-        baseunix,unix,unixutil,
+        baseunix,unix,unixutil,sockets,
       {$endif}
       fd_utils,
     {$endif}
-    classes,pgtypes,bfifo;
+    classes,pgtypes,bfifo,ltimevalstuff;
   procedure processtasks;
 
 
   const
-    packetbasesize = 1460;
+    {how this number is made up:
+    - ethernet: MTU 1500
+    - be safe for either "ethernet v1" or "PPPoE", both take 8 bytes
+    - IPv6 header: 40 bytes (IPv4 is 20)
+    - TCP/UDP header: 20 bytes
+    }
+    packetbasesize = 1432;
     receivebufsize=packetbasesize*8;
 
   var
@@ -67,8 +73,9 @@ interface
     TSendData          = procedure (Sender: TObject; BytesSent: Integer) of object;
 
     tlcomponent = class(tcomponent)
+    private
+      procedure releasetaskhandler(wparam,lparam:longint);
     public
-      released:boolean;
       procedure release; virtual;
       destructor destroy; override;
     end;
@@ -88,8 +95,6 @@ interface
       onsenddata         : tsenddata      ;
       ondatasent         : tsocketevent      ;
       //connected          : boolean         ;
-      nextasin           : tlasio            ;
-      prevasin           : tlasio            ;
 
       recvq              : tfifo;
       OnBgException      : TBgExceptionEvent ;
@@ -101,7 +106,7 @@ interface
       lasterror:integer;
       destroying:boolean;
       recvbufsize:integer;
-      function receivestr:string; virtual;
+      function receivestr:tbufferstring; virtual;
       procedure close;
       procedure abort;
       procedure internalclose(error:word); virtual;
@@ -114,8 +119,8 @@ interface
       procedure dup(invalue:longint);
 
       function sendflush : integer;
-      procedure sendstr(const str : string);virtual;
-      procedure putstringinsendbuffer(const newstring : string);
+      procedure sendstr(const str : tbufferstring);virtual;
+      procedure putstringinsendbuffer(const newstring : tbufferstring);
       function send(data:pointer;len:integer):integer;virtual;
       procedure putdatainsendbuffer(data:pointer;len:integer); virtual;
       procedure deletebuffereddata;
@@ -149,12 +154,6 @@ interface
   var
     timerwrapperinterface : ttimerwrapperinterface;
   type
-    {$ifdef win32}
-      ttimeval = record
-        tv_sec : longint;
-        tv_usec : longint;
-      end;
-    {$endif}
     tltimer=class(tlcomponent)
     protected
 
@@ -221,7 +220,6 @@ procedure messageloop;
 procedure exitmessageloop;
 
 var
-  firstasin                             : tlasio     ;
   firsttimer                            : tltimer    ;
   firsttask  , lasttask   , currenttask : tltask     ;
 
@@ -256,7 +254,6 @@ implementation
 {$ifndef win32}
   {$include unixstuff.inc}
 {$endif}
-{$include ltimevalstuff.inc}
 
 
 {!!! added sleep call -beware}
@@ -279,12 +276,15 @@ begin
   inherited destroy;
 end;
 
-
+procedure tlcomponent.releasetaskhandler(wparam,lparam:longint);
+begin
+  free;
+end;
 
 
 procedure tlcomponent.release;
 begin
-  released := true;
+  addtask(releasetaskhandler,self,0,0);
 end;
 
 procedure tlasio.release;
@@ -337,26 +337,12 @@ begin
   state := wsclosed;
   fdhandlein := -1;
   fdhandleout := -1;
-  nextasin := firstasin;
-  prevasin := nil;
-  if assigned(nextasin) then nextasin.prevasin := self;
-  firstasin := self;
-
-  released := false;
 end;
 
 destructor tlasio.destroy;
 begin
   destroying := true;
   if state <> wsclosed then close;
-  if prevasin <> nil then begin
-    prevasin.nextasin := nextasin;
-  end else begin
-    firstasin := nextasin;
-  end;
-  if nextasin <> nil then begin
-    nextasin.prevasin := prevasin;
-  end;
   recvq.free;
   sendq.free;
   inherited destroy;
@@ -399,6 +385,9 @@ end;
 procedure tlasio.internalclose(error:word);
 begin
   if (state<>wsclosed) and (state<>wsinvalidstate) then begin
+    // -2 is a special indication that we should just exist silently
+    // (used for connect failure handling when socket creation fails)
+    if (fdhandlein = -2) and (fdhandleout = -2) then exit;
     if (fdhandlein < 0) or (fdhandleout < 0) then raise exception.create('internalclose called with invalid fd handles');
     eventcore.rmasterclr(fdhandlein);//fd_clr(fdhandlein,fdsrmaster);
     eventcore.wmasterclr(fdhandleout);//fd_clr(fdhandleout,fdswmaster);
@@ -453,13 +442,13 @@ begin
   end;
 end;
 
-procedure tlasio.sendstr(const str : string);
+procedure tlasio.sendstr(const str : tbufferstring);
 begin
   putstringinsendbuffer(str);
   sendflush;
 end;
 
-procedure tlasio.putstringinsendbuffer(const newstring : string);
+procedure tlasio.putstringinsendbuffer(const newstring : tbufferstring);
 begin
   if newstring <> '' then putdatainsendbuffer(@newstring[1],length(newstring));
 end;
@@ -489,7 +478,10 @@ var
 //  fdstestr : fdset;
 //  fdstestw : fdset;
 begin
-  if state <> wsconnected then exit;
+  if state <> wsconnected then begin
+    result := -1;
+    exit;
+  end;
 
   lensent := sendq.get(data,packetbasesize*2);
   if assigned(data) then result := myfdwrite(fdhandleout,data^,lensent) else result := 0;
@@ -567,7 +559,16 @@ begin
           internalclose(0);
 
         end else begin
-          internalclose({$ifdef win32}getlasterror{$else}linuxerror{$endif});
+          {$ifdef win32}
+          if getlasterror=WSAEWOULDBLOCK then begin
+            //the asynchronous nature of windows messages means we sometimes
+            //get here with the buffer full
+            //so do nothing in that case
+          end else
+          {$endif}
+          begin
+            internalclose({$ifdef win32}getlasterror{$else}linuxerror{$endif});
+          end  
         end;
       end;
 
@@ -734,8 +735,6 @@ begin
   end;
   interval := 1000;
   enabled := true;
-  released := false;
-
 end;
 
 destructor tltimer.destroy;
@@ -886,7 +885,6 @@ end;
 
 
 begin
-  firstasin := nil;
   firsttask := nil;