x400_msasync.c

This is an example program which uses the X400 MS asynchronous interface to send, list, receive and delete messages in the Message Store.

/*  Copyright (c) 2005-2009, Isode Limited, London, England.
 *  All rights reserved.
 *                                                                       
 *  Acquisition and use of this software and related materials for any      
 *  purpose requires a written licence agreement from Isode Limited,
 *  or a written licence from an organisation licenced by Isode Limited
 *  to grant such a licence.
 *
 */
 
/* 
 *
 * @VERSION@
 */
 
#include <stdio.h>
 
#ifdef _WIN32
 
int main(int argc, char **argv)
{
    fprintf(stderr, "This example is not available on Windows\n");
    exit(1);
}
 
#else
 
static void usage(void) ;
 
#include <string.h>
#include <errno.h>
 
#if defined (__hpux)
#include <sys/types.h>
#else
#include <sys/select.h>
#endif 
#include <signal.h>
#include <sys/time.h>
#include <x400_msapi.h>
#include <x400_ms_async.h>
#include "example.h"
 
/* Define IC_ATTRIBUTE
 * For gcc/g++ this becomes __attribute__ and is used for the printf type
 * format checking.
 * Defined to be empty for other compilers
 */
 
#if defined(__GNUC__) || defined (__GNUG__)
#define IC_ATTRIBUTE(x) __attribute__ (x)
#else
#define IC_ATTRIBUTE(x)
#endif
 
/* To annotate function parameters which are known not to be used
 * Not in gcc/g++ prior to v4 (I think)
 */
#if (defined(__GNUG__) && __GNUG__ >= 4) || (!defined(__GNUG__) && defined(__GNUC__) && __GNUC__ >= 3)
# define ARGNOTUSED IC_ATTRIBUTE((unused))
#else
# define ARGNOTUSED
#endif
 
static void connection_established(struct X400msSession *session,
                                   int status,
                                   int num_messages_waiting);
 
static void connection_lost(struct X400msSession *session,
                            int reason_code,
                            char *diagnostic);
 
static void submission_complete(struct X400msSession *session,
                                struct X400msMessage *message,
                                int errorcode);
 
static void fetch_complete(struct X400msSession *session,
                           struct X400msMessage *message,
                           int type,
                           int seq,
                           int errorcode);
 
static void delete_complete(struct X400msSession *session,
                            int seqnum,
                            int errorcode);
 
static void wait_complete(struct X400msSession *session,
                          int num_messages_waiting,
                          int errorcode);
 
static void list_complete(struct X400msSession *session,
                          struct X400msListResult *listres,
                          int errorcode);
 
static void register_complete(struct X400msSession *session,
                              int errorcode);
 
static void alert_event(struct X400msSession *session);
 
static void event_loop(void);
 
static int manage_callback(struct X400msSession *session,
                           int fd,
                           int eventmask);
 
static int unmanage_callback(struct X400msSession *session,
                             int fd,
                             int eventmask);
 
struct SessionTable{
    char *oraddr;
    char *psw;
    char *pa;
    int fd;
    int eventmask;
    struct X400msSession *sp;
};
 
#define MAX_SESSIONS 10
 
struct SessionTable st[MAX_SESSIONS + 1]; 
static int dosubmit = 1;
int millisecs = 10000;
int numcons = 1;
int nummsgs = 9999999;
static char *optstr = "u371m:p:w:l:sc:o:";
int contype;
 
static void usage(void) {
    printf("usage: %s\n", optstr);
    printf("\t where:\n");
    printf("\t -u : Don't prompt to override defaults \n");
    printf("\t -3 : P3 connection \n");
    printf("\t -7 : P7 connection \n");
    printf("\t -m : OR Address in P7 bind arg \n");
    printf("\t -p : Presentation Address of P7 Store \n");
    printf("\t -w : P7 password of P7 user \n");
    printf("\t -s : Don't do submission\n");
    printf("\t -l : Sleep time (milliseconds)\n");
    printf("\t -c : Num associations\n");
    printf("\t -o : Exit after retrieving n messages\n"); 
    return;
}
 
 
int main(int argc, char **argv)
{
    int i;
    int status;
    char *def_oraddr;
    char *def_pa;
    char buffer[BUFSIZ];
    char pa[BUFSIZ];
    char ora[BUFSIZ];
 
    x400_default_alternate_recipient_allowed = 1;
    x400_channel = "1";
    x400_default_originator = "1000000";
 
    for (i = 0; i <= MAX_SESSIONS; i++)
        st[i].oraddr = NULL;
 
    if (get_args(argc, argv, optstr)) {
        usage();
        exit(-1);
    }
 
    def_oraddr = x400_ms_user_addr;
    def_pa = x400_ms_presentation_address;
    if (x400_logline != NULL)
        millisecs = atoi(x400_logline);
 
    dosubmit = x400_default_disclosure_of_recipients;
    numcons = atoi(x400_channel);
    nummsgs = atoi(x400_default_originator);
 
    printf("Connection type (0 = P7, 1 = P3 submit only, 2 = P3 both directions) [%d]: ", x400_contype);
    contype = ic_fgetc(x400_contype, stdin); 
    if (contype != 10)
        ic_fgetc(x400_contype, stdin);
 
    if ( contype < '0' || '2' < contype )
      contype = x400_contype;
    else 
        contype -= '0';
 
    for (i = 0; i < numcons; i++) {
        printf("ORAddress [%s] > ", def_oraddr);
        ic_fgets (ora, sizeof ora, stdin);
 
        if ( ora[strlen(ora)-1] == '\n' )
            ora[strlen(ora)-1] = '\0';
        
        if (ora[0] == '\0') 
            strcpy(ora, def_oraddr);
 
        /* Prompt for password; note: reflected. */
        printf ("Password [%s]: ", 
                contype == 0 ? x400_p7_password : x400_p3_password);
        if ( ic_fgets (buffer, sizeof buffer, stdin) == NULL )
            exit (1);
 
        if (buffer[strlen(buffer)-1] == '\n' )
            buffer[strlen(buffer)-1] = '\0';
        if (buffer[0] == '\0') 
            strcpy(buffer, contype == 0 ? x400_p7_password : x400_p3_password);
 
        printf("Presentation Address [%s] > ", def_pa);
        ic_fgets (pa, sizeof pa, stdin);
 
        if ( pa[strlen(pa)-1] == '\n' )
            pa[strlen(pa)-1] = '\0';
        
        if (pa[0] == '\0') 
            strcpy(pa, def_pa);
        
        st[i].oraddr = strdup(ora);
        st[i].psw = strdup(buffer);
        st[i].pa = strdup(pa);
    }
        
 
    if (talking_to_marben_ms)
        X400msSetConfigRequest(0);
 
    /* Open our connections */
    for (i = 0; (st[i].oraddr != NULL) && (i < numcons); i++) {
        status = X400msOpenAsync (contype, 
                                  st[i].oraddr, NULL, st[i].psw, 
                                  st[i].pa, NULL, 
                                  connection_established,
                                  connection_lost,
                                  submission_complete,
                                  fetch_complete,
                                  delete_complete,
                                  wait_complete,
                                  list_complete,
                                  register_complete,
                                  alert_event,
                                  manage_callback,
                                  unmanage_callback,
                                  &(st[i].sp));
        
        if (status != X400_E_WAIT_WRITE) {
            fprintf (stderr, "Error in Open for %s: %s\n", 
                     st[i].oraddr, X400msError (status));
        } else {
            printf ("Sent off connection request for session %p\n", 
                     st[i].sp);
            X400msSetStrDefault(st[i].sp, 
                                X400_S_LOG_CONFIGURATION_FILE, 
                                "x400api.xml", 0);
            
            if (talking_to_marben_ms)
                X400msSetIntDefault(st[i].sp, X400_N_STRICT_P7_1988, 1);
 
            st[i].fd = X400msGetHandle(st[i].sp); 
        }
    }
 
    event_loop();
 
    return 0;
}
 
 
static int unmanage_callback(struct X400msSession *session,
                             int fd ARGNOTUSED,
                             int eventmask)
{
    int i;
 
    printf("unmanage_callback, session = %p, mask = %d\n", session, eventmask);
 
    for (i = 0; st[i].oraddr != NULL; i++) {
        if (st[i].sp == session) {
            st[i].eventmask &= ~eventmask;
            return 0;
        }
    }
    return -1;
}
 
static int manage_callback(struct X400msSession *session,
                            int fd,
                            int eventmask)
{
    int i;
 
    printf("manage_callback, session = %p, fd = %d, eventmask = %d\n",
           session, fd, eventmask);
 
    for (i = 0; st[i].oraddr != NULL; i++) {
        if (st[i].sp == session) {
            st[i].eventmask |= eventmask;
            return 0;
        }
    }
    return -1;
}
 
 
static void send_messages(void)
{
    int status;
    int i;
    struct X400msMessage *mp;
    struct X400Recipient *rp;
    char buf[1024];
    char contid[1024];
    static int num = 0;
    char *s;
 
    for (i = 0; st[i].oraddr != NULL; i++) {
        if (st[i].fd != -1) {
 
            status = X400msMsgNew (st[i].sp, 
                                   X400_MSG_MESSAGE, &mp);
            if ( status != X400_E_NOERROR ) {
                fprintf (stderr, "x400msMsgNew returned error: %s\n", 
                         X400msError (status));
                exit (status);
            }
 
            status = X400msRecipNew (mp, X400_RECIP_STANDARD, &rp);
            if ( status != X400_E_NOERROR ) {
                fprintf (stderr, "x400msRecipNew returned error: %s\n", 
                         X400msError (status));
                exit (status);
            }
 
            status = X400msRecipAddStrParam (rp, X400_S_OR_ADDRESS, 
                                             st[i].oraddr, -1);
            if ( status != X400_E_NOERROR ) {
                fprintf (stderr, "x400msRecipAddStrParam returned error: %s\n", 
                         X400msError (status));
                exit (status);
            }
 
            sprintf(buf, "Subject for session %p", st[i].sp);
            status = X400msMsgAddStrParam (mp, X400_S_SUBJECT,
                                           buf, -1);
            if ( status != X400_E_NOERROR ) {
                fprintf (stderr, "x400msMsgAddStrParam returned error: %s\n", 
                         X400msError (status));
                exit (status);
            }
 
            status = X400msMsgAddStrParam (mp, X400_T_IA5TEXT, "body text", -1);
            if ( status != X400_E_NOERROR ) {
                fprintf (stderr, "x400ms returned error: %s\n", 
                         X400msError (status));
                exit (status);
            }
#define BINSIZE 6000000
            s = (char*)malloc(BINSIZE);
            memset(s,0,BINSIZE);
            X400msMsgAddAttachment(mp, X400_T_BINARY, s, BINSIZE);
            free(s);
            
            sprintf(contid, "CONTID%d", num);
            num++;
 
            /* Content identifier so we can correlate with submission result */
            status = X400msMsgAddStrParam(mp, X400_S_CONTENT_IDENTIFIER, contid, -1);
            if ( status != X400_E_NOERROR ) {
                fprintf (stderr, "X400msMsgAddIntParam %d returned error: %s\n", 
                         X400_S_CONTENT_IDENTIFIER, X400msError (status));
                exit (status);
            }
 
            printf("Sending message from & to %s\n", st[i].oraddr);
            status = X400msMsgSend(mp);
 
            if ((status != X400_E_WAIT_READ) && 
                (status != X400_E_WAIT_READ_WRITE)) {
                fprintf (stderr, "Error sending message: %d\n", status);
            }
 
            X400msMsgDelete(mp, 0);
        }
    }
}
 
 
static void connection_established(struct X400msSession *session,
                                   int status,
                                   int alert)
{
    int retval;
    int count; 
 
    if (status == X400_E_NOERROR) {
        printf("Connection established for session %p, alert = %d\n", 
               session, alert);
 
        if (contype == 0) {
#ifdef notdef
            printf("Sending Register request\n");
            retval = X400msRegisterAutoAction (session, X400_AUTO_ALERT, 
                                               9, NULL);
            if ((retval != X400_E_WAIT_READ) &&
                (retval != X400_E_WAIT_READ_WRITE))
                fprintf(stderr, 
                        "Failed to issue Register for session %p, err = %d\n", 
                        session, retval);
            printf("Registered AutoAlert autoaction (id = 9) OK\n");
            
            printf("Sending Deregister request\n");
            retval = X400msDeregisterAutoAction (session, 
                                                 X400_AUTO_ALERT, 5);
            if ((retval != X400_E_WAIT_READ) &&
                (retval != X400_E_WAIT_READ_WRITE))
                fprintf(stderr, 
                "Failed to issue Deregister for session %p, err = %d\n", 
                        session, retval);
            printf("Deegistered AutoAlert autoaction (id = 5) OK\n");
#endif      
            printf("Sending List request\n");
            retval = X400msList(session, NULL, NULL);
            if ((retval != X400_E_WAIT_READ) &&
                (retval != X400_E_WAIT_READ_WRITE))
                fprintf(stderr, 
                        "Failed to issue List for session %p, err = %d\n", 
                        session, retval);
        } else {
            /* If P3 connection, we just need to wait until we get invoked */
            retval = X400msWait(session, 0, &count);
        
            if ((retval != X400_E_WAIT_READ) && 
                (retval != X400_E_WAIT_READ_WRITE))
                fprintf(stderr, 
                        "Failed to issue Wait for session %p, err = %d\n", 
                        session, retval);
        }
    } else {    
        int i;
 
        fprintf(stderr, "Connection failed for session %p\n", session);
        for (i = 0; st[i].oraddr != NULL; i++) {
            if (st[i].sp == session) {
                st[i].fd = -1;
                break;
            }
        }
    }
}
 
static void connection_lost(struct X400msSession *session ARGNOTUSED,
                            int reason_code,
                            char *diagnostic)
{
    fprintf(stderr, "Connection lost callback, reason = %d, diag = %s\n",
            reason_code, (diagnostic == NULL) ? "NULL" : diagnostic);
}
 
static void submission_complete(struct X400msSession *session ARGNOTUSED,
                                struct X400msMessage *message,
                                int errorcode)
{
    if (errorcode == X400_E_NOERROR) {
        char buf[1024];
        size_t len;
        int status;
 
        memset(buf,0,1024);
        if (X400msMsgGetStrParam (message, X400_S_MESSAGE_IDENTIFIER,
                                  buf, 1024, &len) == X400_E_NOERROR)
            printf("Submission successful, identifier = %s\n", buf);
        else
            fprintf(stderr,"Submission successful but failed to get ID\n");
 
        status = X400msMsgGetStrParam(message, X400_S_MESSAGE_SUBMISSION_TIME, buf, 1024, &len);
        if (status != X400_E_NOERROR) {
            fprintf(stderr, "No MessageSubmissionTime present from submission result: error %d\n", status);
        } else {
            buf [len] = '\0';
            printf("MessageSubmissionTime from Submission Result = %s\n", buf);
        }
 
        status = X400msMsgGetStrParam(message, X400_S_CONTENT_IDENTIFIER, buf, 1024, &len);
        if (status != X400_E_NOERROR) {
            fprintf(stderr, "No ContentIdentifier present from submission result: error %d\n", status);
        } else {
            buf [len] = '\0';
            printf("ContentIdentifier from Submission Result = %s\n", buf);
        }
 
        X400msMsgDelete (message, 0);
    } else {
        fprintf(stderr, "Submission failed, errorcode = %d\n", errorcode);
    }
 
}
 
 
static void list_complete(struct X400msSession *session,
                          struct X400msListResult *lr,
                          int errorcode)
{
    int i = 1;
    int status = X400_E_NOERROR;
 
    printf("list_complete, errorcode = %d\n", errorcode);
 
    if (errorcode == X400_E_NOERROR) {
        /* Traverse list result, extracting information about each message */
        while (status == X400_E_NOERROR) {
            int seqnum = 0;
            char buf[1024];
            char *type;
            char *subj;
            char *sender;
            size_t len;
            int length;
            int pri;
            int entry_status;
            char *msgid;
            char *subjid;
 
            type = NULL;
            subj = NULL;
            sender = NULL;
            msgid = NULL;
            subjid = NULL;
            length = -1;
            pri = -1;
            entry_status = -1;
 
            /* Get sequence number */
            if ((status = X400msListGetIntParam(lr, X400_N_MS_SEQUENCE_NUMBER, 
                                                i, &seqnum)) == X400_E_NO_MORE_RESULTS)
                break;
            
            if (X400msListGetStrParam(lr,
                                      X400_S_OBJECTTYPE,
                                      i,
                                      buf,
                                      1024,
                                      &len) == X400_E_NOERROR)
                type = strdup(buf);
      
            if (X400msListGetStrParam(lr,
                                      X400_S_SUBJECT,
                                      i,
                                      buf,
                                      1024,
                                      &len) == X400_E_NOERROR)
                subj = strdup(buf);
                
            if (X400msListGetStrParam(lr,
                                      X400_S_OR_ADDRESS,
                                      i,
                                      buf,
                                      1024,
                                      &len) == X400_E_NOERROR) 
                sender = strdup(buf);
                
            if (X400msListGetStrParam(lr,
                                      X400_S_MESSAGE_IDENTIFIER,
                                      i,
                                      buf,
                                      1024,
                                      &len) == X400_E_NOERROR) 
                msgid = strdup(buf);
 
            if (X400msListGetStrParam(lr,
                                      X400_S_SUBJECT_IDENTIFIER,
                                      i,
                                      buf,
                                      1024,
                                      &len) == X400_E_NOERROR) 
                subjid = strdup(buf);
 
            X400msListGetIntParam(lr, X400_N_PRIORITY, i, &pri);
 
            X400msListGetIntParam(lr, X400_N_CONTENT_LENGTH, i, &length);
      
            /* Entry status */
            X400msListGetIntParam(lr, X400_N_MS_ENTRY_STATUS, i, 
                                  &entry_status);
 
            printf("S=%d, P=%d, len=%d, stat=%d, type=%s, subj=%s, orig=%s, msgid=%s, subjid=%s\n",
                   seqnum, pri, length, entry_status, 
                   (type == NULL) ? "NULL" : type, 
                   (subj == NULL) ? "NULL": subj, 
                   (sender == NULL) ? "NULL" : sender,
                   (msgid == NULL) ? "NULL" : msgid,
                   (subjid == NULL) ? "NULL" : subjid);
            i++;
            if (sender != NULL)
                free(sender);
            if (subj != NULL)
                free(subj);
            if (type != NULL)
                free(type);
            if (msgid != NULL)
                free(msgid);
            if (subjid != NULL)
                free(subjid);
 
            if (seqnum != 0) {
                int retval;
 
                /* Ask for the whole message */
                printf("Session %p, issing MsgGet\n", session);
                retval = X400msMsgGet (session, seqnum, 
                                       NULL, NULL, NULL);
                if ((retval != X400_E_WAIT_READ) &&
                    (retval != X400_E_WAIT_READ_WRITE)) {
                    fprintf(stderr, "MsgGet failed !\n");
                    exit(1);
                }
            }
        }
        X400msListFree(lr);
    } else {
        fprintf(stderr,"List failed, errorcode = %d\n", errorcode);
    }
}
 
 
static void fetch_complete(struct X400msSession *session,
                           struct X400msMessage *message,
                           int type,
                           int seqno,
                           int errorcode)
{ 
    printf("Fetch complete callback, session=%p, seqno=%d, type=%d, errorcode = %d\n",
           session, seqno, type, errorcode);
 
    if (errorcode == X400_E_NOERROR) {
        char buf[1024];
        size_t len;
        int retval;
        char buffer[30000];
        int status;
        size_t length;
 
        status = X400msMsgGetStrParam (message, X400_S_CONTENT_FILENAME,
                                       buffer, sizeof buffer, &length);
        if (status == X400_E_NOERROR) 
            printf("Read raw content into file %s\n", buffer);
        else 
            fprintf(stderr,"Failed to read raw content into file, error %d\n", status);
 
        status = X400msMsgGetStrParam (message, X400_S_CONTENT_STRING,
                                       buffer, sizeof buffer , &length);
        if (status == X400_E_NOERROR) 
            printf("Read raw content into buffer, length = %ld\n", (long)length);
        else 
            fprintf(stderr,"Failed to read raw content into buffer, error %d\n", status);
 
        memset(buf,0,1024);
        if (X400msMsgGetStrParam (message, X400_S_OBJECTTYPE,
                                  buf, 1024, &len) == X400_E_NOERROR)
            printf("Object type = %s\n", buf);
 
        memset(buf,0,1024);
        if (X400msMsgGetStrParam (message, X400_S_SUBJECT,
                                  buf, 1024, &len) == X400_E_NOERROR)
            printf("Subject = %s\n", buf);
 
        if (contype != 0) {
            retval = X400msMsgGetFinish (message, X400_E_NOERROR, 0);
            if (retval != X400_E_NOERROR)
                fprintf(stderr, "MsgGetFinish failed !\n");
        }
 
        /* Now delete it */
        retval = X400msMsgDelete (message, 0);
        if ((retval != X400_E_NOERROR) && 
            (retval != X400_E_WAIT_READ) && (retval != X400_E_WAIT_READ_WRITE))
            fprintf(stderr, "MsgDelete failed !\n");
        else
            printf("Session %p, issued MsgDelete for %d\n", session, seqno );
#ifdef notdef   
        /* Ask for the next one */
        retval = X400msMsgGet (session, 0, NULL, NULL, NULL);
            fprintf(stderr, "MsgGet failed !\n");
        if ((retval != X400_E_WAIT_READ) && (retval != X400_E_WAIT_READ_WRITE))
        else
            printf("Session %p, issued MsgGet\n", session);
#endif
    } else
        fprintf(stderr, "Fetch failed, errcode = %d\n",errorcode);
        
}
 
static void delete_complete(struct X400msSession *session,
                            int seqnum,
                            int errorcode)
{
    if (errorcode == X400_E_NOERROR) {
        printf("Session %p, - delete complete callback for seqnum %d\n",
           session, seqnum);
    } else {
        fprintf(stderr, "******* SESSION %p, - DELETE FAILED %d **********\n",
           session, errorcode);
    }
}
 
static void register_complete(struct X400msSession *session,
                              int errorcode)
{
    if (errorcode == X400_E_NOERROR) {
        printf("Session %p, - register complete callback\n",
           session);
    } else {
        fprintf(stderr, "******* SESSION %p, - REGISTER FAILED %d **********\n",
           session, errorcode);
    }
}
 
static void wait_complete(struct X400msSession *session,
                                int num_messages_waiting,
                                int errorcode)
{
    printf("Wait complete callback, errorcode = %d, num = %d\n",
           errorcode, num_messages_waiting);
 
    if (num_messages_waiting > 0) {
        int retval;
 
        /* Get first available message */
        printf("Session %p, issuing MsgGet OK\n", session);
        retval = X400msMsgGet (session, 0, NULL, NULL, NULL);
        if ((retval != X400_E_WAIT_READ) && (retval != X400_E_WAIT_READ_WRITE))
            fprintf(stderr, "MsgGet failed !\n");
    }
}
 
static void alert_event(struct X400msSession *session)
{
    int retval;
 
    printf("Got an alert !\n");
 
    printf("Issuing List op for session %p\n", session);
    retval = X400msList(session, NULL, NULL);
    if ((retval != X400_E_WAIT_READ) && (retval != X400_E_WAIT_READ_WRITE))
        fprintf(stderr, "Failed to issue List op for session %p, error %d\n", 
                session, retval);
}
 
 
static void event_loop()
{
    fd_set rfds, wfds, efds;
    struct timeval timeout, *tp;
    int n;
    int i;
 
    while (1) {
        int num_fds = 0;
 
        FD_ZERO (&rfds);
        FD_ZERO (&efds);
        FD_ZERO (&wfds);
 
        for (i = 0; st[i].oraddr != NULL; i++) {
            if (st[i].fd != -1) {
                
                                printf("Expecting ");
                if (st[i].eventmask & X400_EVENT_READ) {
                                    printf("read ");
                    FD_SET(st[i].fd, &rfds);
                }
 
                if (st[i].eventmask & X400_EVENT_WRITE) {
                                    printf("write ");
                    FD_SET(st[i].fd, &wfds);
                } 
 
                if (st[i].eventmask & X400_EVENT_ERROR) {
                                    printf("error ");
                    FD_SET(st[i].fd, &efds);
                }
                                printf("on fd %d\n", st[i].fd);
            }
 
            if (st[i].fd > num_fds)
                num_fds = st[i].fd;
        }
 
        if ( millisecs >= 0 ) {
            timeout.tv_sec  = millisecs / 1000;
            timeout.tv_usec = (millisecs % 1000) *1000;
            tp = &timeout;
        } else {
            tp = 0;
        }
        //printf("num fds = %d\n", num_fds);
        n = select (num_fds + 1, &rfds, &wfds, &efds, tp);
        
        if (n < 0) {
            fprintf(stderr, "select returned %d: errno = %d\n", n, errno);
            exit(1);
        }
        else if (n == 0) {
            if (nummsgs < 0) {
                printf("Exiting now\n");
                for (i = 0; st[i].oraddr != NULL; i++)
                    if (st[i].fd != -1) 
                        X400msClose(st[i].sp);
                exit(0);
            } else
                nummsgs--;
 
            printf(">>>>> Timeout\n");
            
            if (contype == 0) {
                for (i = 0; st[i].oraddr != NULL; i++) {
                    int retval;
                    
                    if (st[i].fd != -1) {
                        printf("Issuing List for session %p\n", st[i].sp);
                        retval = X400msList(st[i].sp, NULL, NULL);
                        if ((retval != X400_E_WAIT_READ) && 
                            (retval != X400_E_WAIT_READ_WRITE))
                            fprintf(stderr, 
                                    "Failed to issue List for session %p, err = %d\n", 
                                st[i].sp, retval);
                    }
                }
            }
 
            if (dosubmit == 1)
                /* Submit some new message */
                send_messages();
 
        } else {
            X400msProcessEvent(num_fds + 1, &rfds, &wfds, &efds);
        }
    }
}
 
#endif