Example

The following Service SAF sends a file bracketed by the strings "begin" and "end."

#include <string.h>
#include "nsapi.h"

NSAPI_PUBLIC int service_net_sendfile(pblock *pb, Session *sn, Request *rq)
{
    char *path;
    SYS_FILE fd;
    struct sendfiledata sfd;
    int rv;

    path = pblock_findval("path", rq->vars);
    fd = system_fopenRO(path);
    if (!fd) {
        log_error(LOG_MISCONFIG, "service-net-sendfile", sn, rq,
                  "Error opening %s (%s)", path, system_errmsg());
        return REQ_ABORTED;
    }

    sfd.fd = fd;                     /* file to send */
    sfd.offset = 0;                  /* start sending from the beginning */
    sfd.len = 0;                     /* send the whole file */
    sfd.header = "begin";            /* header data to send before the file */
    sfd.hlen = strlen(sfd.header);   /* length of header data */
    sfd.trailer = "end";             /* trailer data to send after the file */
    sfd.tlen = strlen(sfd.trailer);  /* length of trailer data */

    /* send the headers, file, and trailers to the client */
    rv = net_sendfile(sn->csd, &sfd);

    system_fclose(fd);

    if (rv < 0) {
        log_error(LOG_INFORM, "service-net-sendfile", sn, rq,
                 "Error sending %s (%s)", path, 
                 system_errmsg());
        return REQ_ABORTED;
    }

    return REQ_PROCEED;
}