This is what the world has been waiting for: Integration of COBOL and Varnish. http://kly.no/varnish/cobol.png

foo.vcl

backend foo {
	.host = "kly.no";
}

C{
#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <libcob/common.h>

}C

sub vcl_recv {
	error 200 "meh";
}
sub vcl_error {
	C{
        void *f; 
        void (*func)(void);
        char *error;
        FILE *tmp = stdout;
        FILE *tmp2;
        char buffer[1024];
        int i;
	int argc = 1;
	char *argv[] = {"varnishd"};

        f = dlopen("/home/kristian/src/cobol/HELLO-WORLD.so",RTLD_LAZY);
        if (!f) {
                fprintf(stderr,"%s\n", dlerror());
                exit(EXIT_FAILURE);
        }
        dlerror();
        func = dlsym(f, "HELLO__WORLD");
        if ((error = dlerror()) != NULL) {
                fprintf(stderr, "%s\n",error);
                exit(EXIT_FAILURE);
        }
        tmp2 = tmpfile();
        stdout = tmp2;
        cob_init(argc, argv);
        func();
        stdout = tmp;
        fflush(tmp2);
        rewind(tmp2);
        i = fread(buffer,1,1023,tmp2);
        printf("Got %d bytes\n",i);
        if (i>0) {
                buffer[i] = '\0';
                printf("We got: %s. So there.\n",buffer);
		VRT_synth_page(sp, 0, buffer,vrt_magic_string_end);

        } else {
                printf("Mmeh\n");
        }
}C
	return(deliver);
}

HELLO-WORLD.cobol

	IDENTIFICATION DIVISION.
	PROGRAM-ID. HELLO-WORLD.
	PROCEDURE DIVISION.
		DISPLAY 'Hello, world'.

Err, btw, this C code is not representative of my regular way of coding. It's also about as thread safe as a cat. And also, will break upon multiple uses. It was just extracted from a PoC main() :)

For real COBOL support, I take 5000USD per hour for consultancy.