From: arne@vajhoej.dk   
      
   On 9/13/2025 6:43 PM, Arne Vajhøj wrote:   
   > On 9/13/2025 5:58 PM, Lawrence D’Oliveiro wrote:   
   >> On Sat, 13 Sep 2025 10:07:28 -0400, Arne Vajhøj wrote:   
   >>>      ctx := zmq_ctx_new;   
   >>>      s := zmq_socket(ctx, ZMQ_REQ);   
   >>>      zmq_connect(s, 'tcp://localhost:10000');   
   >>   
   >> Are errors automatically signalled?   
   >   
   > No.   
   >   
   > It returns an integer with status.   
   >   
   > I just didn't test on it.   
      
   Note that the detailed error is not in the return value   
   but in errno.   
      
   So I had to add support for that (and had a few issues   
   along the way, because I messed up a free call).   
      
   Instead of:   
      
       retval := zmq_connect(s, addr);   
       if retval <> 0 then begin   
          writeln('error');   
       end;   
      
   it is now possible to do:   
      
       retval := zmq_connect(s, addr);   
       if retval <> 0 then begin   
          e := errno;   
          writeln(strerror(e));   
       end;   
      
   or even:   
      
       retval := zmq_connect(s, addr);   
       if retval <> 0 then begin   
          e := errno;   
          if e <> EVMSERR then begin   
             writeln(strerror(e));   
          end else begin   
             e := vmserrno;   
             writeln(strvmserror(e));   
          end;   
       end;   
      
   Arne   
      
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