inetd test

gistfile1.txt

#include "czmq.h"

void
s_log (FILE *output, const char *format, ...)
{
    time_t curtime = time (NULL);
    struct tm *loctime = localtime (&curtime);
    char formatted [20];
    strftime (formatted, 20, "%y-%m-%d %H:%M:%S ", loctime);
    fprintf (output, "%s", formatted);

    va_list argptr;
    va_start (argptr, format);
    vfprintf (output, format, argptr);
    fprintf (output, "\n");
    va_end (argptr);
    fflush (output);
}


//  The main thread simply starts several clients, and a server, and then
//  waits for the server to finish.

int main (void)
{
    //  10-byte ZMTP/2.0 signature
    byte signature [] = { 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F };

    FILE *trace = fopen ("/tmp/trace.log", "a");

    //  Send signature to client
    s_log (trace, "Send signature to client");
    fwrite (signature, 1, sizeof (signature), stdout);

    //  Read request from client
    byte buffer [100];
    int bytes = fread (buffer, 1, sizeof (buffer), stdin);
    s_log (trace, " -- %d/%d bytes read %02x %02x %02x ... %02x ",
           bytes, sizeof (signature), buffer[0], buffer[1], buffer[2], buffer [9]);
    
    if (bytes == sizeof (signature)
    &&  memcmp (buffer, signature, sizeof (signature)) == 0) {
        s_log (trace, " -- valid signature");

        //  Send socket type and empty identity
        buffer [0] = 0x04;      //  REP socket
        buffer [1] = 0x00;      //  Final frame
        buffer [2] = 0x00;      //  Identity size zero
        fwrite (buffer, 1, 3, stdout);

        //  Read socket type and identity
        bytes = fread (buffer, 1, sizeof (buffer), stdin);
        s_log (trace, " -- %d bytes read for socket/identity", bytes);

        //  Read actual request
        bytes = fread (buffer, 1, sizeof (buffer), stdin);
        s_log (trace, " c -- %d bytes read for request", bytes);
    }
    fclose (trace);
    return 0;
}