Add http server

Author: Grahame Grieve

library/http/http_router.pas

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<CONFIG>
+  <ProjectOptions>
+    <Version Value="12"/>
+    <General>
+      <Flags>
+        <MainUnitHasCreateFormStatements Value="False"/>
+        <MainUnitHasTitleStatement Value="False"/>
+        <MainUnitHasScaledStatement Value="False"/>
+      </Flags>
+      <SessionStorage Value="InProjectDir"/>
+      <Title Value="Demonstration HTTP Server"/>
+      <UseAppBundle Value="False"/>
+      <ResourceType Value="res"/>
+    </General>
+    <BuildModes>
+      <Item Name="Default" Default="True"/>
+    </BuildModes>
+    <PublishOptions>
+      <Version Value="2"/>
+      <UseFileFilters Value="True"/>
+    </PublishOptions>
+    <RunParams>
+      <FormatVersion Value="2"/>
+    </RunParams>
+    <Units>
+      <Unit>
+        <Filename Value="http_server_demo.lpr"/>
+        <IsPartOfProject Value="True"/>
+      </Unit>
+    </Units>
+  </ProjectOptions>
+  <CompilerOptions>
+    <Version Value="11"/>
+    <Target>
+      <Filename Value="http_server_demo"/>
+    </Target>
+    <SearchPaths>
+      <IncludeFiles Value="$(ProjOutDir);.."/>
+      <Libraries Value=".."/>
+      <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
+    </SearchPaths>
+    <Linking>
+      <Debugging>
+        <DebugInfoType Value="dsDwarf3"/>
+      </Debugging>
+    </Linking>
+  </CompilerOptions>
+  <Debugging>
+    <Exceptions>
+      <Item>
+        <Name Value="EAbort"/>
+      </Item>
+      <Item>
+        <Name Value="ECodetoolError"/>
+      </Item>
+      <Item>
+        <Name Value="EFOpenError"/>
+      </Item>
+    </Exceptions>
+  </Debugging>
+</CONFIG>

library/http/http_server.pas

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+program http_server_demo;
+
+{$mode objfpc}{$H+}
+
+uses
+  {$IFDEF UNIX}
+  cthreads,
+  {$ENDIF}
+  Classes, SysUtils, CustApp,
+  { you can add units after this }
+  http_server_example;
+
+type
+
+  { THTTPServerDemo }
+
+  THTTPServerDemo = class(TCustomApplication)
+  private
+    procedure RunServer(port : integer);
+  protected
+    procedure DoRun; override;
+  public
+    constructor Create(TheOwner: TComponent); override;
+    destructor Destroy; override;
+    procedure WriteHelp; virtual;
+  end;
+
+{ THTTPServerDemo }
+
+procedure THTTPServerDemo.RunServer(port: integer);
+var
+  WebServer : TMyWebServer;
+begin
+  WebServer := TMyWebServer.Create;
+  try
+    WebServer.Start(Port);
+    try
+      writeLn('Server running on port '+inttostr(port)+'. Press Enter to stop');
+      ReadLn; // Wait for user input
+    finally
+    end;
+  finally
+    WebServer.Free;
+  end;
+end;
+
+procedure THTTPServerDemo.DoRun;
+var
+  ErrorMsg: String;
+  Port : integer;
+begin
+  // quick check parameters
+  ErrorMsg := CheckOptions('h', 'help');
+  if ErrorMsg <> '' then
+  begin
+    ShowException(Exception.Create(ErrorMsg));
+    Terminate;
+    Exit;
+  end;
+
+  // parse parameters
+  if HasOption('h', 'help') then begin
+    WriteHelp;
+    Terminate;
+    Exit;
+  end;
+
+  try
+    Port := 7180;
+    if ParamCount > 0 then
+      Port := StrToIntDef(ParamStr(1), 7180);
+     RunServer(port);
+  except
+    on E: Exception do
+    begin
+      WriteLn('Error: ', E.Message);
+      ReadLn;
+    end;
+  end;
+
+  Terminate;
+end;
+
+constructor THTTPServerDemo.Create(TheOwner: TComponent);
+begin
+  inherited Create(TheOwner);
+  StopOnException:=True;
+end;
+
+destructor THTTPServerDemo.Destroy;
+begin
+  inherited Destroy;
+end;
+
+procedure THTTPServerDemo.WriteHelp;
+begin
+  writeln('Usage: ', ExeName, ' -h');
+end;
+
+var
+  Application: THTTPServerDemo;
+begin
+  Application:=THTTPServerDemo.Create(nil);
+  Application.Title:='Demonstration HTTP Server';
+  Application.Run;
+  Application.Free;
+end.
+