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-rw-r--r--docs/examples/hiperfifo.c140
1 files changed, 76 insertions, 64 deletions
diff --git a/docs/examples/hiperfifo.c b/docs/examples/hiperfifo.c
index 76bc6c1f6..3ca1ed238 100644
--- a/docs/examples/hiperfifo.c
+++ b/docs/examples/hiperfifo.c
@@ -66,10 +66,17 @@ callback.
#include <sys/poll.h>
#include <curl/curl.h>
#include <event2/event.h>
+#include <event2/event_struct.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
+#include <sys/cdefs.h>
+#ifdef __GNUC__
+#define _Unused __attribute__((unused))
+#else
+#define _Unused
+#endif
#define MSG_OUT stdout /* Send info to stdout, change to stderr if you want */
@@ -78,11 +85,12 @@ callback.
typedef struct _GlobalInfo
{
struct event_base *evbase;
- struct event *fifo_event;
- struct event *timer_event;
+ struct event fifo_event;
+ struct event timer_event;
CURLM *multi;
int still_running;
FILE *input;
+ int stopped;
} GlobalInfo;
@@ -103,16 +111,42 @@ typedef struct _SockInfo
CURL *easy;
int action;
long timeout;
- struct event *ev;
- int evset;
+ struct event ev;
GlobalInfo *global;
} SockInfo;
+#define __case(code) \
+ case code: s = __STRING(code)
+
+/* Die if we get a bad CURLMcode somewhere */
+static void mcode_or_die(const char *where, CURLMcode code)
+{
+ if(CURLM_OK != code) {
+ const char *s;
+ switch(code) {
+ __case(CURLM_BAD_HANDLE); break;
+ __case(CURLM_BAD_EASY_HANDLE); break;
+ __case(CURLM_OUT_OF_MEMORY); break;
+ __case(CURLM_INTERNAL_ERROR); break;
+ __case(CURLM_UNKNOWN_OPTION); break;
+ __case(CURLM_LAST); break;
+ default: s = "CURLM_unknown"; break;
+ __case(CURLM_BAD_SOCKET);
+ fprintf(MSG_OUT, "ERROR: %s returns %s\n", where, s);
+ /* ignore this error */
+ return;
+ }
+ fprintf(MSG_OUT, "ERROR: %s returns %s\n", where, s);
+ exit(code);
+ }
+}
+
+
/* Update the event timer after curl_multi library calls */
-static int multi_timer_cb(CURLM *multi, long timeout_ms, GlobalInfo *g)
+static int multi_timer_cb(CURLM *multi _Unused, long timeout_ms, GlobalInfo *g)
{
struct timeval timeout;
- (void)multi; /* unused */
+ CURLMcode rc;
timeout.tv_sec = timeout_ms/1000;
timeout.tv_usec = (timeout_ms%1000)*1000;
@@ -127,35 +161,17 @@ static int multi_timer_cb(CURLM *multi, long timeout_ms, GlobalInfo *g)
* for all other values of timeout_ms, this should set or *update*
* the timer to the new value
*/
- evtimer_add(g->timer_event, &timeout);
+ if (timeout_ms == 0) {
+ rc = curl_multi_socket_action(g->multi,
+ CURL_SOCKET_TIMEOUT, 0, &g->still_running);
+ mcode_or_die("multi_timer_cb: curl_multi_socket_action", rc);
+ } else if (timeout_ms == -1)
+ evtimer_del(&g->timer_event);
+ else
+ evtimer_add(&g->timer_event, &timeout);
return 0;
}
-/* Die if we get a bad CURLMcode somewhere */
-static void mcode_or_die(const char *where, CURLMcode code)
-{
- if(CURLM_OK != code) {
- const char *s;
- switch(code) {
- case CURLM_BAD_HANDLE: s = "CURLM_BAD_HANDLE"; break;
- case CURLM_BAD_EASY_HANDLE: s = "CURLM_BAD_EASY_HANDLE"; break;
- case CURLM_OUT_OF_MEMORY: s = "CURLM_OUT_OF_MEMORY"; break;
- case CURLM_INTERNAL_ERROR: s = "CURLM_INTERNAL_ERROR"; break;
- case CURLM_UNKNOWN_OPTION: s = "CURLM_UNKNOWN_OPTION"; break;
- case CURLM_LAST: s = "CURLM_LAST"; break;
- default: s = "CURLM_unknown";
- break;
- case CURLM_BAD_SOCKET: s = "CURLM_BAD_SOCKET";
- fprintf(MSG_OUT, "ERROR: %s returns %s\n", where, s);
- /* ignore this error */
- return;
- }
- fprintf(MSG_OUT, "ERROR: %s returns %s\n", where, s);
- exit(code);
- }
-}
-
-
/* Check for completed transfers, and remove their easy handles */
static void check_multi_info(GlobalInfo *g)
@@ -181,6 +197,8 @@ static void check_multi_info(GlobalInfo *g)
free(conn);
}
}
+ if (g->still_running == 0 && g->stopped)
+ event_base_loopbreak(g->evbase);
}
@@ -201,8 +219,8 @@ static void event_cb(int fd, short kind, void *userp)
check_multi_info(g);
if(g->still_running <= 0) {
fprintf(MSG_OUT, "last transfer done, kill timeout\n");
- if(evtimer_pending(g->timer_event, NULL)) {
- evtimer_del(g->timer_event);
+ if(evtimer_pending(&g->timer_event, NULL)) {
+ evtimer_del(&g->timer_event);
}
}
}
@@ -210,12 +228,10 @@ static void event_cb(int fd, short kind, void *userp)
/* Called by libevent when our timeout expires */
-static void timer_cb(int fd, short kind, void *userp)
+static void timer_cb(int fd _Unused, short kind _Unused, void *userp)
{
GlobalInfo *g = (GlobalInfo *)userp;
CURLMcode rc;
- (void)fd;
- (void)kind;
rc = curl_multi_socket_action(g->multi,
CURL_SOCKET_TIMEOUT, 0, &g->still_running);
@@ -229,8 +245,7 @@ static void timer_cb(int fd, short kind, void *userp)
static void remsock(SockInfo *f)
{
if(f) {
- if(f->evset)
- event_free(f->ev);
+ event_del(&f->ev);
free(f);
}
}
@@ -247,11 +262,9 @@ static void setsock(SockInfo *f, curl_socket_t s, CURL *e, int act,
f->sockfd = s;
f->action = act;
f->easy = e;
- if(f->evset)
- event_free(f->ev);
- f->ev = event_new(g->evbase, f->sockfd, kind, event_cb, g);
- f->evset = 1;
- event_add(f->ev, NULL);
+ event_del(&f->ev);
+ event_assign(&f->ev, g->evbase, f->sockfd, kind, event_cb, g);
+ event_add(&f->ev, NULL);
}
@@ -297,23 +310,20 @@ static int sock_cb(CURL *e, curl_socket_t s, int what, void *cbp, void *sockp)
/* CURLOPT_WRITEFUNCTION */
-static size_t write_cb(void *ptr, size_t size, size_t nmemb, void *data)
+static size_t write_cb(void *ptr _Unused, size_t size, size_t nmemb, void *data)
{
size_t realsize = size * nmemb;
- ConnInfo *conn = (ConnInfo*) data;
- (void)ptr;
- (void)conn;
+ ConnInfo *conn _Unused = (ConnInfo*) data;
+
return realsize;
}
/* CURLOPT_PROGRESSFUNCTION */
-static int prog_cb(void *p, double dltotal, double dlnow, double ult,
- double uln)
+static int prog_cb(void *p, double dltotal, double dlnow, double ult _Unused,
+ double uln _Unused)
{
ConnInfo *conn = (ConnInfo *)p;
- (void)ult;
- (void)uln;
fprintf(MSG_OUT, "Progress: %s (%g/%g)\n", conn->url, dlnow, dltotal);
return 0;
@@ -346,6 +356,7 @@ static void new_conn(char *url, GlobalInfo *g)
curl_easy_setopt(conn->easy, CURLOPT_NOPROGRESS, 0L);
curl_easy_setopt(conn->easy, CURLOPT_PROGRESSFUNCTION, prog_cb);
curl_easy_setopt(conn->easy, CURLOPT_PROGRESSDATA, conn);
+ curl_easy_setopt(conn->easy, CURLOPT_FOLLOWLOCATION, 1L);
fprintf(MSG_OUT,
"Adding easy %p to multi %p (%s)\n", conn->easy, g->multi, url);
rc = curl_multi_add_handle(g->multi, conn->easy);
@@ -356,21 +367,24 @@ static void new_conn(char *url, GlobalInfo *g)
}
/* This gets called whenever data is received from the fifo */
-static void fifo_cb(int fd, short event, void *arg)
+static void fifo_cb(int fd _Unused, short event _Unused, void *arg)
{
char s[1024];
long int rv = 0;
int n = 0;
GlobalInfo *g = (GlobalInfo *)arg;
- (void)fd; /* unused */
- (void)event; /* unused */
do {
s[0]='\0';
rv = fscanf(g->input, "%1023s%n", s, &n);
s[n]='\0';
if(n && s[0]) {
- new_conn(s, arg); /* if we read a URL, go get it! */
+ if (!strcmp(s, "stop")) {
+ g->stopped = 1;
+ if (g->still_running == 0)
+ event_base_loopbreak(g->evbase);
+ } else
+ new_conn(s, arg); /* if we read a URL, go get it! */
}
else
break;
@@ -405,29 +419,27 @@ static int init_fifo(GlobalInfo *g)
g->input = fdopen(sockfd, "r");
fprintf(MSG_OUT, "Now, pipe some URL's into > %s\n", fifo);
- g->fifo_event = event_new(g->evbase, sockfd, EV_READ|EV_PERSIST, fifo_cb, g);
- event_add(g->fifo_event, NULL);
+ event_assign(&g->fifo_event, g->evbase, sockfd, EV_READ|EV_PERSIST, fifo_cb, g);
+ event_add(&g->fifo_event, NULL);
return (0);
}
static void clean_fifo(GlobalInfo *g)
{
- event_free(g->fifo_event);
+ event_del(&g->fifo_event);
fclose(g->input);
unlink(fifo);
}
-int main(int argc, char **argv)
+int main(int argc _Unused, char **argv _Unused)
{
GlobalInfo g;
- (void)argc;
- (void)argv;
memset(&g, 0, sizeof(GlobalInfo));
g.evbase = event_base_new();
init_fifo(&g);
g.multi = curl_multi_init();
- g.timer_event = evtimer_new(g.evbase, timer_cb, &g);
+ evtimer_assign(&g.timer_event, g.evbase, timer_cb, &g);
/* setup the generic multi interface options we want */
curl_multi_setopt(g.multi, CURLMOPT_SOCKETFUNCTION, sock_cb);
@@ -443,7 +455,7 @@ int main(int argc, char **argv)
/* this, of course, won't get called since only way to stop this program is
via ctrl-C, but it is here to show how cleanup /would/ be done. */
clean_fifo(&g);
- event_free(g.timer_event);
+ event_del(&g.timer_event);
event_base_free(g.evbase);
curl_multi_cleanup(g.multi);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 12:45:06 +0000