TCP/IP(四）
(*@\000000501*)
(*@/// destructor t_fingerd.Destroy; *)
destructor t_fingerd.Destroy;
begin
f_answer.Free;
inherited destroy;
end;
(*@\000000301*)
(*@/// procedure t_fingerd.do_action; *)
procedure t_fingerd.do_action;
var
i: integer;
temp_socket: TSocket;
finger_info:TFingerInfo;
sockinfo: TSockAddr;
s: string;
begin
temp_socket:=f_socket;
self.f_socket:=accept_socket_in(f_socket,sockinfo);
f_eof:=false;
finger_info.address:=longint(sockinfo.Sin_addr);
s:=self.read_line(f_socket);
finger_info.request:=s;
finger_info.hostname:=; (* NYI !!! *)
if assigned(f_fingerrequest) then
f_fingerrequest(self,finger_info);
for i:=0 to f_answer.count-1 do begin
self.write_s(f_socket,f_answer.strings[i]+#13#10);
end;
close_socket_linger(f_socket);
f_socket:=temp_socket;
end;
(*@\00000131B*)
(*@/// procedure t_fingerd.SetAnswer(Value: TStringList); *)
procedure t_fingerd.SetAnswer(Value: TStringList);
begin
if value=NIL then
f_answer.clear
else
f_answer.assign(value);
end;
(*@\000000603*)
(*@/// procedure t_fingerd.WndProc(var Msg : TMessage); *)
procedure t_fingerd.WndProc(var Msg : TMessage);
begin
if msg.msg<>uwm_socketevent then
inherited wndproc(msg)
else begin
if msg.lparamhi=socket_error then
else begin
case msg.lparamlo of
fd_accept: begin
do_action;
end;
end;
end;
end;
end;
(*@\000000E09*)
(*@/// procedure t_fingerd.action; *)
procedure t_fingerd.action;
begin
open_socket_in(f_socket,f_Socket_number,my_ip_address);
if f_socket=INVALID_SOCKET then
raise ESocketError.Create(WSAGetLastError);
winsock.WSAAsyncSelect(f_socket,f_handle,uwm_socketevent,fd_accept);
end;
(*@\00000010B*)
(*@\00000051C*){ HTTP and FTP - the file transfer protocols }
(*@/// class t_http(t_tcpip) *)
(*@/// constructor t_http.Create(Aowner:TComponent); *)
constructor t_http.Create(Aowner:TComponent);
begin
inherited create(AOwner);
f_content_post:=application/x-www-form-urlencoded;
f_do_author:=TStringlist.Create;
end;
(*@\000000503*)
(*@/// destructor t_http.Destroy; *)
destructor t_http.Destroy;
begin
f_do_author.free;
inherited destroy;
end;
(*@\*)(*@/// procedure t_http.sendrequest(const method,version: string); *)
procedure t_http.sendrequest(const method,version: string);
begin
SendCommand(method+ +f_path+ HTTP/+version);
if f_sender<> then
SendCommand(From: +f_sender);
if f_reference<> then
SendCommand(Referer: +f_reference);
if f_agent<> then
SendCommand(User-Agent: +f_agent);
if f_nocache then
SendCommand(Pragma: no-cache);
if method=POST then begin
SendCommand(Content-Length: +inttostr(stream.size));
if f_content_post<> then
SendCommand(Content-Type: +f_content_post);
end;
if f_author<> then begin
self.write_s(f_socket,Authorization: +f_author+#13#10);
if assigned(f_tracer) then
f_tracer(Authorization: *****,tt_proto_sent);
end;
self.write_s(f_socket,#13#10); (* finalize the request *)
end;
(*@\000000301*)
(*@/// procedure t_http.getanswer; *)
procedure t_http.getanswer;
var
s: string;
proto,user,pass,port: string;
field,data: string;
begin
f_do_author.clear;
f_type:=;
f_size:=0;
repeat
s:=self.read_line(f_socket);
if s<> then
if assigned(f_tracer) then
f_tracer(s,tt_proto_get);
if false then
(*@/// else if left(s,8)=HTTP/1.0 then http-status-reply *)
else if copy(s,1,8)=HTTP/1.0 then begin
f_status_nr:=strtoint(copy(s,10,3));
f_status_txt:=copy(s,14,length(s));
if f_status_nr>=400 then EXIT; (* HTTP error returned *)
end
(*@\*)
(*@/// else if pos(:,s)>0 then parse the response string *)
else if pos(:,s)>0 then begin
field:=lowercase(copy(s,1,pos(:,s)-1));
data:=copy(s,pos(:,s)+2,length(s));
if false then
{ else if field=date then }
{ else if field=mime-version then }
{ else if field=pragma then }
{ else if field=allow then }
(*@/// else if field=location then change the uri !!! *)
else if field=location then begin
if proxy<> then
f_path:=data (* it goes via a proxy, so just change the uri *)
else begin
parse_url(data,proto,user,pass,f_hostname,port,f_path);
if port<> then f_Socket_number:=strtoint(port);
end;
end
(*@\000000601*)
{ else if field=server then }
{ else if field=content-encoding then }
(*@/// else if field=content-length then *)
else if field=content-length then
f_size:=strtoint(data)
(*@\*)
(*@/// else if field=content-type then *)
else if field=content-type then
f_type:=data
(*@\*)
(*@/// else if field=www-authenticate then *)
else if field=www-authenticate then
f_do_author.add(data)
(*@\00000020E*)
{ else if field=expires then }
{ else if field=last-modified then }
end
(*@\000000901*)
(*@/// else some very strange response, ignore it *)
else;
(*@\*)
until s=;
if f_status_nr>=400 then
raise EProtocolError.Create(HTTP,f_status_txt,f_status_nr);
end;
(*@\000001101*)(*@/// procedure t_http.action; *)
procedure t_http.action;
var
proto,user,pass,host,port,path: string;
begin
(*@/// parse url and proxy to f_hostname, f_path and f_socket_number *)
if f_proxy<> then begin
parse_url(f_url,proto,user,pass,host,port,path);
f_path:=f_url;
if proto= then
f_path:=http://+f_path;
parse_url(f_proxy,proto,u
补充：软件开发 , Delphi ,
