/**
* @brief Connects the client to the server.
* @param QString host - the host name
* @param int port - the port used by the server
* @param QString pseudo - the client's name
*/
void MainWindow::serverConnection(QString host, int port, QString pseudo)
{
strcpy(_player.name, pseudo.toStdString().c_str());
init_host(_ptr_host, (char*)host.toStdString().c_str(), &_local_addr);
assign_port(&_local_addr, port);
_player.socket = create_socket();
// Have to test if the client can be connect to the server
if(server_connection(_player.socket, _local_addr) >= 0) {
qDebug() << "[Server_connection] : Client is connected";
startListeners(); // Have to start listeners threads
// Ask to the server to add the new client into its array of players
qDebug() << "[Server_connection] : Sending information to the server" << _player.name;
frame f = make_frame(_local_addr.sin_addr, _local_addr.sin_addr, CONNECT, _player.name);
write_to_server(_player.socket, &f);
// When the client is connected, display the mainPage of the application
ui->stackedWidget->slideInIdx(1, SlidingStackedWidget::BOTTOM2TOP);
}
else {
//Connection is impossible
QMessageBox errorBox(QMessageBox::Question,tr("error"),tr("Can't establish the connection with the server."),QMessageBox::Cancel);
errorBox.exec();
}
}
const char* ts3plugin_description()
{
if( description_cache == 0 ) {
init_host( &pluginHost, &hostPluginID );
description_cache = pluginHost->desc( hostPluginID );
}
return description_cache;
}
const char* ts3plugin_name()
{
if( name_cache == 0 ) {
init_host( &pluginHost, &hostPluginID );
name_cache = pluginHost->name( hostPluginID );
}
return name_cache;
}
const char* ts3plugin_author()
{
if( author_cache == 0 ) {
init_host( &pluginHost, &hostPluginID );
author_cache = pluginHost->author( hostPluginID );
}
return author_cache;
}
const char* ts3plugin_version()
{
if( version_cache == 0 ) {
init_host( &pluginHost, &hostPluginID );
version_cache = pluginHost->version( hostPluginID );
}
return version_cache;
}
int main(void) {
/* typical in 10000 service scenario: 150..1000 concurrently scheduled async jobs. */
const int num_checks_at_once = MAX_CONCURRENT_CHECKS;
void* neb_handle;
int i;
char ok = 1;
char * test_nebargs[] = { "config=extras/shared.conf", };
struct nebstruct_process_struct data_process_events;
data_process_events.type = NEBTYPE_PROCESS_EVENTLOOPSTART;
init_externals();
init_host();
init_svc();
init_svc_check();
neb_handle = load_neb("./mod_gearman2.o", test_nebargs[0]);
neb_make_callbacks(NEBCALLBACK_PROCESS_DATA, &data_process_events);
while (ok) {
printf("Sending %i service checks.\n", num_checks_at_once);
for (i = 0; i < num_checks_at_once; i++) {
nebstruct_service_check_data* data_service_check;
char host_name[16];
char service_name[16];
sprintf(host_name, "%i", i / 10);
sprintf(service_name, "%i", i);
data_service_check = setup_service(host_name, service_name);
neb_make_callbacks(NEBCALLBACK_SERVICE_CHECK_DATA,
data_service_check);
}
ok = (reap_cr_from_neb(num_checks_at_once) >= num_checks_at_once);
}
unload_neb(neb_handle);
return 0;
}
static int apache_read_host (user_data_t *user_data) /* {{{ */
{
int i;
char *ptr;
char *saveptr;
char *lines[16];
int lines_num = 0;
char *fields[4];
int fields_num;
apache_t *st;
st = user_data->data;
assert (st->url != NULL);
/* (Assured by `config_add') */
if (st->curl == NULL)
{
int status;
status = init_host (st);
if (status != 0)
return (-1);
}
assert (st->curl != NULL);
st->apache_buffer_fill = 0;
if (curl_easy_perform (st->curl) != CURLE_OK)
{
ERROR ("apache: curl_easy_perform failed: %s",
st->apache_curl_error);
return (-1);
}
/* fallback - server_type to apache if not set at this time */
if (st->server_type == -1)
{
WARNING ("apache plugin: Unable to determine server software "
"automatically. Will assume Apache.");
st->server_type = APACHE;
}
ptr = st->apache_buffer;
saveptr = NULL;
while ((lines[lines_num] = strtok_r (ptr, "\n\r", &saveptr)) != NULL)
{
ptr = NULL;
lines_num++;
if (lines_num >= 16)
break;
}
for (i = 0; i < lines_num; i++)
{
fields_num = strsplit (lines[i], fields, 4);
if (fields_num == 3)
{
if ((strcmp (fields[0], "Total") == 0)
&& (strcmp (fields[1], "Accesses:") == 0))
submit_derive ("apache_requests", "",
atoll (fields[2]), st);
else if ((strcmp (fields[0], "Total") == 0)
&& (strcmp (fields[1], "kBytes:") == 0))
submit_derive ("apache_bytes", "",
1024LL * atoll (fields[2]), st);
}
else if (fields_num == 2)
{
if (strcmp (fields[0], "Scoreboard:") == 0)
submit_scoreboard (fields[1], st);
else if ((strcmp (fields[0], "BusyServers:") == 0) /* Apache 1.* */
|| (strcmp (fields[0], "BusyWorkers:") == 0) /* Apache 2.* */)
submit_gauge ("apache_connections", NULL, atol (fields[1]), st);
else if ((strcmp (fields[0], "IdleServers:") == 0) /* Apache 1.x */
|| (strcmp (fields[0], "IdleWorkers:") == 0) /* Apache 2.x */)
submit_gauge ("apache_idle_workers", NULL, atol (fields[1]), st);
}
}
st->apache_buffer_fill = 0;
return (0);
} /* }}} int apache_read_host */
xymongen_page_t *load_layout(char *pgset)
{
char pagetag[100], subpagetag[100], subparenttag[100],
vpagetag[100], vsubpagetag[100], vsubparenttag[100],
grouptag[100], summarytag[100], titletag[100], hosttag[100];
char *name, *link, *onlycols, *exceptcols;
char hostname[MAX_LINE_LEN];
xymongen_page_t *toppage, *curpage, *cursubpage, *cursubparent;
group_t *curgroup;
host_t *curhost;
char *curtitle;
int ip1, ip2, ip3, ip4;
char *p;
int fqdn = get_fqdn();
char *cfgdata, *inbol, *ineol, insavchar = '\0';
if (loadhostsfromxymond) {
if (load_hostnames("@", NULL, fqdn) != 0) {
errprintf("Cannot load host configuration from xymond\n");
return NULL;
}
}
else {
if (load_hostnames(xgetenv("HOSTSCFG"), "dispinclude", fqdn) != 0) {
errprintf("Cannot load host configuration from %s\n", xgetenv("HOSTSCFG"));
return NULL;
}
}
if (first_host() == NULL) {
errprintf("Empty configuration from %s\n", (loadhostsfromxymond ? "xymond" : xgetenv("HOSTSCFG")));
return NULL;
}
dbgprintf("load_layout(pgset=%s)\n", textornull(pgset));
/*
* load_hostnames() picks up the hostname definitions, but not the page
* layout. So we will scan the file again, this time doing the layout.
*/
if (pgset == NULL) pgset = "";
sprintf(pagetag, "%spage", pgset);
sprintf(subpagetag, "%ssubpage", pgset);
sprintf(subparenttag, "%ssubparent", pgset);
sprintf(vpagetag, "v%spage", pgset);
sprintf(vsubpagetag, "v%ssubpage", pgset);
sprintf(vsubparenttag, "v%ssubparent", pgset);
sprintf(grouptag, "%sgroup", pgset);
sprintf(summarytag, "%ssummary", pgset);
sprintf(titletag, "%stitle", pgset);
sprintf(hosttag, "%s:", pgset); for (p=hosttag; (*p); p++) *p = toupper((int)*p);
toppage = init_page("", "", 0);
addtopagelist(toppage);
curpage = NULL;
cursubpage = NULL;
curgroup = NULL;
curhost = NULL;
cursubparent = NULL;
curtitle = NULL;
inbol = cfgdata = hostscfg_content();
while (inbol && *inbol) {
inbol += strspn(inbol, " \t");
ineol = strchr(inbol, '\n');
if (ineol) {
while ((ineol > inbol) && (isspace(*ineol) || (*ineol == '\n'))) ineol--;
if (*ineol != '\n') ineol++;
insavchar = *ineol;
*ineol = '\0';
}
dbgprintf("load_layout: -- got line '%s'\n", inbol);
if ((strncmp(inbol, pagetag, strlen(pagetag)) == 0) || (strncmp(inbol, vpagetag, strlen(vpagetag)) == 0)) {
getnamelink(inbol, &name, &link);
if (curpage == NULL) {
/* First page - hook it on toppage as a subpage from there */
curpage = toppage->subpages = init_page(name, link, (strncmp(inbol, vpagetag, strlen(vpagetag)) == 0));
}
else {
curpage = curpage->next = init_page(name, link, (strncmp(inbol, vpagetag, strlen(vpagetag)) == 0));
}
curpage->parent = toppage;
if (curtitle) {
curpage->pretitle = curtitle;
curtitle = NULL;
}
cursubpage = NULL;
cursubparent = NULL;
curgroup = NULL;
curhost = NULL;
addtopagelist(curpage);
}
else if ( (strncmp(inbol, subpagetag, strlen(subpagetag)) == 0) || (strncmp(inbol, vsubpagetag, strlen(vsubpagetag)) == 0) ) {
if (curpage == NULL) {
errprintf("'subpage' ignored, no preceding 'page' tag : %s\n", inbol);
goto nextline;
}
getnamelink(inbol, &name, &link);
if (cursubpage == NULL) {
cursubpage = curpage->subpages = init_page(name, link, (strncmp(inbol, vsubpagetag, strlen(vsubpagetag)) == 0));
}
else {
cursubpage = cursubpage->next = init_page(name, link, (strncmp(inbol, vsubpagetag, strlen(vsubpagetag)) == 0));
}
cursubpage->parent = curpage;
if (curtitle) {
cursubpage->pretitle = curtitle;
curtitle = NULL;
}
cursubparent = NULL;
curgroup = NULL;
curhost = NULL;
addtopagelist(cursubpage);
}
else if ( (strncmp(inbol, subparenttag, strlen(subparenttag)) == 0) || (strncmp(inbol, vsubparenttag, strlen(vsubparenttag)) == 0) ) {
xymongen_page_t *parentpage, *walk;
getparentnamelink(inbol, toppage, &parentpage, &name, &link);
if (parentpage == NULL) {
errprintf("'subparent' ignored, unknown parent page: %s\n", inbol);
goto nextline;
}
cursubparent = init_page(name, link, (strncmp(inbol, vsubparenttag, strlen(vsubparenttag)) == 0));
if (parentpage->subpages == NULL) {
parentpage->subpages = cursubparent;
}
else {
for (walk = parentpage->subpages; (walk->next); (walk = walk->next)) ;
walk->next = cursubparent;
}
if (curtitle) {
cursubparent->pretitle = curtitle;
curtitle = NULL;
}
cursubparent->parent = parentpage;
curgroup = NULL;
curhost = NULL;
addtopagelist(cursubparent);
}
else if (strncmp(inbol, grouptag, strlen(grouptag)) == 0) {
int sorthosts = (strstr(inbol, "group-sorted") != NULL);
getgrouptitle(inbol, pgset, &link, &onlycols, &exceptcols);
if (curgroup == NULL) {
curgroup = init_group(link, onlycols, exceptcols, sorthosts);
if (cursubparent != NULL) {
cursubparent->groups = curgroup;
}
else if (cursubpage != NULL) {
/* We're in a subpage */
cursubpage->groups = curgroup;
}
else if (curpage != NULL) {
/* We're on a main page */
curpage->groups = curgroup;
}
else {
/* We're on the top page */
toppage->groups = curgroup;
}
}
else {
curgroup->next = init_group(link, onlycols, exceptcols, sorthosts);
curgroup = curgroup->next;
}
if (curtitle) { curgroup->pretitle = curtitle; curtitle = NULL; }
curhost = NULL;
}
else if (sscanf(inbol, "%3d.%3d.%3d.%3d %s", &ip1, &ip2, &ip3, &ip4, hostname) == 5) {
void *xymonhost = NULL;
int dialup, nonongreen, crittime = 1;
double warnpct = reportwarnlevel;
int warnstops = reportwarnstops;
char *displayname, *clientalias, *comment, *description;
char *alertlist, *onwaplist, *reporttime;
char *nopropyellowlist, *nopropredlist, *noproppurplelist, *nopropacklist;
char *targetpagelist[MAX_TARGETPAGES_PER_HOST];
int targetpagecount;
char *hval;
/* Check for ".default." hosts - they are ignored. */
if (*hostname == '.') goto nextline;
if (!fqdn) {
/* Strip any domain from the hostname */
char *p = strchr(hostname, '.');
if (p) *p = '\0';
}
/* Get the info */
xymonhost = hostinfo(hostname);
if (xymonhost == NULL) {
errprintf("Confused - hostname '%s' cannot be found. Ignored\n", hostname);
goto nextline;
}
/* Check for no-display hosts - they are ignored. */
/* But only when we're building the default pageset */
if ((strlen(pgset) == 0) && (xmh_item(xymonhost, XMH_FLAG_NODISP) != NULL)) goto nextline;
for (targetpagecount=0; (targetpagecount < MAX_TARGETPAGES_PER_HOST); targetpagecount++)
targetpagelist[targetpagecount] = NULL;
targetpagecount = 0;
dialup = (xmh_item(xymonhost, XMH_FLAG_DIALUP) != NULL);
nonongreen = (xmh_item(xymonhost, XMH_FLAG_NONONGREEN) != NULL);
alertlist = xmh_item(xymonhost, XMH_NK);
hval = xmh_item(xymonhost, XMH_NKTIME); if (hval) crittime = within_sla(xmh_item(xymonhost, XMH_HOLIDAYS), hval, 0);
onwaplist = xmh_item(xymonhost, XMH_WML);
nopropyellowlist = xmh_item(xymonhost, XMH_NOPROPYELLOW);
if (nopropyellowlist == NULL) nopropyellowlist = xmh_item(xymonhost, XMH_NOPROP);
nopropredlist = xmh_item(xymonhost, XMH_NOPROPRED);
noproppurplelist = xmh_item(xymonhost, XMH_NOPROPPURPLE);
nopropacklist = xmh_item(xymonhost, XMH_NOPROPACK);
displayname = xmh_item(xymonhost, XMH_DISPLAYNAME);
comment = xmh_item(xymonhost, XMH_COMMENT);
description = xmh_item(xymonhost, XMH_DESCRIPTION);
hval = xmh_item(xymonhost, XMH_WARNPCT); if (hval) warnpct = atof(hval);
hval = xmh_item(xymonhost, XMH_WARNSTOPS); if (hval) warnstops = atof(hval);
reporttime = xmh_item(xymonhost, XMH_REPORTTIME);
clientalias = xmh_item(xymonhost, XMH_CLIENTALIAS);
if (xymonhost && (strcmp(xmh_item(xymonhost, XMH_HOSTNAME), clientalias) == 0)) clientalias = NULL;
if (xymonhost && (strlen(pgset) > 0)) {
/* Walk the clone-list and pick up the target pages for this host */
void *cwalk = xymonhost;
do {
hval = xmh_item_walk(cwalk);
while (hval) {
if (strncasecmp(hval, hosttag, strlen(hosttag)) == 0)
targetpagelist[targetpagecount++] = strdup(hval+strlen(hosttag));
hval = xmh_item_walk(NULL);
}
cwalk = next_host(cwalk, 1);
} while (cwalk &&
(strcmp(xmh_item(cwalk, XMH_HOSTNAME), xmh_item(xymonhost, XMH_HOSTNAME)) == 0) &&
(targetpagecount < MAX_TARGETPAGES_PER_HOST) );
/*
* HACK: Check if the pageset tag is present at all in the host
* entry. If it isn't, then drop this incarnation of the host.
*
* Without this, the following hosts.cfg file will have the
* www.hswn.dk host listed twice on the alternate pageset:
*
* adminpage nyc NYC
*
* 127.0.0.1 localhost # bbd http://localhost/ CLIENT:osiris
* 172.16.10.2 www.xymon.com # http://www.xymon.com/ ADMIN:nyc ssh noinfo
*
* page superdome Superdome
* 172.16.10.2 www.xymon.com # noconn
*
*/
if (strstr(inbol, hosttag) == NULL) targetpagecount = 0;
}
if (strlen(pgset) == 0) {
/*
* Default pageset generated. Put the host into
* whatever group or page is current.
*/
if (curhost == NULL) {
curhost = init_host(hostname, 0, displayname, clientalias,
comment, description,
ip1, ip2, ip3, ip4, dialup,
warnpct, warnstops, reporttime,
alertlist, crittime, onwaplist,
nopropyellowlist, nopropredlist, noproppurplelist, nopropacklist);
if (curgroup != NULL) {
curgroup->hosts = curhost;
}
else if (cursubparent != NULL) {
cursubparent->hosts = curhost;
}
else if (cursubpage != NULL) {
cursubpage->hosts = curhost;
}
else if (curpage != NULL) {
curpage->hosts = curhost;
}
else {
toppage->hosts = curhost;
}
}
else {
curhost = curhost->next = init_host(hostname, 0, displayname, clientalias,
comment, description,
ip1, ip2, ip3, ip4, dialup,
warnpct, warnstops, reporttime,
alertlist, crittime, onwaplist,
nopropyellowlist,nopropredlist,
noproppurplelist, nopropacklist);
}
curhost->parent = (cursubparent ? cursubparent : (cursubpage ? cursubpage : curpage));
if (curtitle) { curhost->pretitle = curtitle; curtitle = NULL; }
curhost->nonongreen = nonongreen;
}
else if (targetpagecount) {
int pgnum;
for (pgnum=0; (pgnum < targetpagecount); pgnum++) {
char *targetpagename = targetpagelist[pgnum];
char savechar;
int wantedgroup = 0;
xymonpagelist_t *targetpage = NULL;
/* Put the host into the page specified by the PGSET: tag */
p = strchr(targetpagename, ',');
if (p) {
savechar = *p;
*p = '\0';
wantedgroup = atoi(p+1);
}
else {
savechar = '\0';
p = targetpagename + strlen(targetpagename);
}
/* Find the page */
if (strcmp(targetpagename, "*") == 0) {
*targetpagename = '\0';
}
for (targetpage = pagelisthead; (targetpage && (strcmp(targetpagename, targetpage->pageentry->name) != 0)); targetpage = targetpage->next) ;
*p = savechar;
if (targetpage == NULL) {
errprintf("Warning: Cannot find any target page named '%s' in set '%s' - dropping host '%s'\n",
targetpagename, pgset, hostname);
}
else {
host_t *newhost = init_host(hostname, 0, displayname, clientalias,
comment, description,
ip1, ip2, ip3, ip4, dialup,
warnpct, warnstops, reporttime,
alertlist, crittime, onwaplist,
nopropyellowlist,nopropredlist,
noproppurplelist, nopropacklist);
if (wantedgroup > 0) {
group_t *gwalk;
host_t *hwalk;
int i;
for (gwalk = targetpage->pageentry->groups, i=1; (gwalk && (i < wantedgroup)); i++,gwalk=gwalk->next) ;
if (gwalk) {
if (gwalk->hosts == NULL)
gwalk->hosts = newhost;
else {
for (hwalk = gwalk->hosts; (hwalk->next); hwalk = hwalk->next) ;
hwalk->next = newhost;
}
}
else {
errprintf("Warning: Cannot find group %d for host %s - dropping host\n",
wantedgroup, hostname);
}
}
else {
/* Just put in on the page's hostlist */
host_t *walk;
if (targetpage->pageentry->hosts == NULL)
targetpage->pageentry->hosts = newhost;
else {
for (walk = targetpage->pageentry->hosts; (walk->next); walk = walk->next) ;
walk->next = newhost;
}
}
newhost->parent = targetpage->pageentry;
if (curtitle) newhost->pretitle = curtitle;
}
curtitle = NULL;
}
}
}
else if (strncmp(inbol, summarytag, strlen(summarytag)) == 0) {
/* summary row.column IP-ADDRESS-OF-PARENT http://xymon.com/ */
char sumname[MAX_LINE_LEN];
char receiver[MAX_LINE_LEN];
char url[MAX_LINE_LEN];
summary_t *newsum;
if (sscanf(inbol, "summary %s %s %s", sumname, receiver, url) == 3) {
newsum = init_summary(sumname, receiver, url);
newsum->next = sumhead;
sumhead = newsum;
}
}
else if (strncmp(inbol, titletag, strlen(titletag)) == 0) {
/* Save the title for the next entry */
curtitle = strdup(skipwhitespace(skipword(inbol)));
}
nextline:
if (ineol) {
*ineol = insavchar;
if (*ineol != '\n') ineol = strchr(ineol, '\n');
inbol = (ineol ? ineol+1 : NULL);
}
else
inbol = NULL;
}
xfree(cfgdata);
return toppage;
}
void ts3plugin_setFunctionPointers(const struct TS3Functions funcs)
{
init_host( &pluginHost, &hostPluginID );
}
static int apache_read_host (user_data_t *user_data) /* {{{ */
{
char *ptr;
char *saveptr;
char *line;
char *fields[4];
int fields_num;
apache_t *st;
st = user_data->data;
int status;
char *content_type;
static const char *text_plain = "text/plain";
assert (st->url != NULL);
/* (Assured by `config_add') */
if (st->curl == NULL)
{
status = init_host (st);
if (status != 0)
return (-1);
}
assert (st->curl != NULL);
st->apache_buffer_fill = 0;
if (curl_easy_perform (st->curl) != CURLE_OK)
{
ERROR ("apache: curl_easy_perform failed: %s",
st->apache_curl_error);
return (-1);
}
/* fallback - server_type to apache if not set at this time */
if (st->server_type == -1)
{
WARNING ("apache plugin: Unable to determine server software "
"automatically. Will assume Apache.");
st->server_type = APACHE;
}
status = curl_easy_getinfo (st->curl, CURLINFO_CONTENT_TYPE, &content_type);
if ((status == CURLE_OK) && (content_type != NULL) &&
(strncasecmp (content_type, text_plain, strlen (text_plain)) != 0))
{
WARNING ("apache plugin: `Content-Type' response header is not `%s' "
"(received: `%s'). Expecting unparseable data. Please check `URL' "
"parameter (missing `?auto' suffix ?)",
text_plain, content_type);
}
ptr = st->apache_buffer;
saveptr = NULL;
while ((line = strtok_r (ptr, "\n\r", &saveptr)) != NULL)
{
ptr = NULL;
fields_num = strsplit (line, fields, STATIC_ARRAY_SIZE (fields));
if (fields_num == 3)
{
if ((strcmp (fields[0], "Total") == 0) && (strcmp (fields[1], "Accesses:") == 0))
submit_derive ("apache_requests", "", atoll (fields[2]), st);
else if ((strcmp (fields[0], "Total") == 0) && (strcmp (fields[1], "kBytes:") == 0))
submit_derive ("apache_bytes", "", 1024LL * atoll (fields[2]), st);
}
else if (fields_num == 2)
{
if (strcmp (fields[0], "Scoreboard:") == 0)
submit_scoreboard (fields[1], st);
else if ((strcmp (fields[0], "BusyServers:") == 0) /* Apache 1.* */
|| (strcmp (fields[0], "BusyWorkers:") == 0) /* Apache 2.* */)
submit_gauge ("apache_connections", NULL, atol (fields[1]), st);
else if ((strcmp (fields[0], "IdleServers:") == 0) /* Apache 1.x */
|| (strcmp (fields[0], "IdleWorkers:") == 0) /* Apache 2.x */)
submit_gauge ("apache_idle_workers", NULL, atol (fields[1]), st);
}
}
st->apache_buffer_fill = 0;
return (0);
} /* }}} int apache_read_host */
int main(int argc, char* argv[]) {
// Checks the program parameters
int opt;
map_options(argc, argv, &opt);
argc -= optind;
argv += optind;
if(argc != 2) {
usage();
exit(EXIT_FAILURE);
}
// Destination file opening
if(fd == -1) {
if((fd = open(filename, O_RDWR|O_CREAT, S_IRWXU|S_IRWXG)) < 0) {
die("Error opening destination file");
}
}
// Port and adresses string init
char *addr_str = argv[0];
char *port_str = argv[1];
if(verbose) {
printf("\nListenning address \'%s\' on port \'%s\'\n", addr_str,
port_str);
}
// Resolve the address passed to the program
int result;
if((result = getaddrinfo(addr_str, port_str, &hints, &address)) < 0) {
printf("Error resolving address %s - code %i", addr_str, result);
freeaddrinfo(address);
close(fd);
exit(EXIT_FAILURE);
}
// initialize the socket used by the receiver
sock_id = init_host(address, receiver);
if(sock_id == -1) {
die("Error creating socket");
}
packetstruct tmp_packet; // stores the just received packet
// last in-sequence acknowledge packet
int lastack = SEQSPAN-1; // last in-sequence acknowledge packet
int bufferPos = 0; // Position following lastack in the buffer
// of paylod has been received.
int bufferFill = 0; //nb of unwritten valid packets received
int idx; //position in the buffer for the received packet
ssize_t size = PAYLOADSIZE; // Size of the received payload
int is_valid;
memset(window,0,BUFFSIZE*sizeof(window_slot));
while( !isReceived(lastack) ) {
/* blocking receive - we are waiting for a frame */
src_len = sizeof(src_host);
if(recvfrom(sock_id, (void *) &tmp_packet, sizeof(tmp_packet), 0,
(struct sockaddr*) &src_host, &(src_len)) != sizeof(packetstruct)) {
die("Error while receiving packet");
}
is_valid = packet_valid(&tmp_packet);
/* only if the packet is valid */
if(is_valid == 1) {
size = tmp_packet.length;
if(verbose) {
printf("Received a %zd-byte type %u packet (seq %u)\n", size,
tmp_packet.type, tmp_packet.seqnum);
}
// Is the sequence number in the receive window ?
if((idx = idx_in_window(tmp_packet.seqnum,lastack,bufferPos)) != -1) {
if(bufferFill<BUFFSIZE && !window[idx].received){
recv_buffer[idx] = tmp_packet; // copy packet to rcv_buffer
window[idx].received = true; // mark the frame as received
bufferFill++; // add 1 more received packet
/* If this is the last packet from the original file
* (ie, payload with a size smaller than 512 Bytes */
if(size < PAYLOADSIZE) {
if(verbose){
printf("Packet with smaller PAYLOADSIZE received, end of file detected\n");
}
lastseq = tmp_packet.seqnum;
}
// Try to empty the in-sequence received packets
if(flush_frames(fd, &lastack, &bufferPos, &bufferFill)) {
die("Error writing packets to file");
}
}
else{printf("BufferFill : %d The receiving buffer is full\n",bufferFill);}
// Send an acknowledgement
acknowledge(lastack);
}
// Else, we do nothing and discard it...
else if(verbose) {
printf("Received an out-of-window packet (seq:%u)(lastack:%d)\n ", tmp_packet.seqnum,lastack);
}
}
else{
if(verbose){
printf("Received a corrupted packet !\n");
}
acknowledge(lastack);
}
}
// End of transmission : resend acks if the sender keeps sending data
int received;
int timeDiff = EOTDELAY-1;
int EOTstart = clock();
while(timeDiff<EOTDELAY){
received = 0;
fcntl(sock_id, F_SETFL, O_NONBLOCK); // make receive non-blocking
received = recvfrom(sock_id,(void*)(&tmp_packet),sizeof(tmp_packet),0,NULL,NULL);
if(received != sizeof(packetstruct) && errno != EAGAIN) {
die("Error receiving");
}
if(received==sizeof(packetstruct)){
acknowledge(lastack);
}
timeDiff = (clock()-EOTstart)*1000/CLOCKS_PER_SEC;
}
if(verbose) {
printf("File successfully received\n");
}
freeaddrinfo(address);
close(sock_id);
exit(EXIT_SUCCESS);
}
