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Sockets: Difference between revisions
→{{header|Pascal}}
m (Somehow a copy of the Neko socket example was placed inside the one for Smalltalk) |
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=={{header|Pascal}}==
Tested using <code>nc -l 256</code>, on both macOS Sierra and Windows 7, compiled using Free Pascal in the default FPC mode.
Very similar to the [https://rosettacode.org/wiki/Sockets#C example in C].
<lang pascal>Program Sockets_Example;▼
See also [https://rosettacode.org/wiki/Sockets#Delphi Delphi].
Uses
Line 824 ⟶ 827:
TCP_Sock: integer;
Remote_Addr: TSockAddr;
Message: string;
PMessage: Pchar;
Message_Len: integer;
Line 833 ⟶ 839:
Sin_family := AF_INET;
Sin_addr := StrToNetAddr('127.0.0.1');
Sin_port := HtoNs(256);
end;
Line 839 ⟶ 845:
TCP_Sock := fpSocket(AF_INET, SOCK_STREAM, IPPROTO_IP);
{
If TCP_Sock = -1 then
begin
Line 855 ⟶ 861:
{ Finally, send the message to the server and disconnect }
Message := 'Hello socket world';
PMessage := @Message;
fpSend(TCP_Sock, @Message, SizeOf(Message), 0);▼
Message_Len := StrLen(PMessage);
If fpSend(TCP_Sock, PMessage, Message_Len, 0) <> Message_Len then
begin
WriteLn('An error occurred while sending data to the server');
Halt(1);
end;
CloseSocket(TCP_Sock);
End.
</lang>
Variant without superfluous additions:
<lang pascal>Program Sockets_ExampleB;
Uses
sockets;
Var
TCP_Sock: integer;
Remote_Addr: TSockAddr;
Message: string;
PMessage: Pchar;
Message_Len: integer;
Begin
Remote_Addr.Sin_family := AF_INET;
Remote_Addr.Sin_addr := StrToNetAddr('127.0.0.1');
Remote_Addr.Sin_port := HtoNs(256);
TCP_Sock := fpSocket(AF_INET, SOCK_STREAM, IPPROTO_IP);
fpConnect(TCP_Sock, @Remote_Addr, SizeOf(Remote_Addr));
Message := 'Hello socket world';
PMessage := @Message;
Message_Len := StrLen(PMessage);
End.
</lang>
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