Let us know if you're using libasyncd

[wolkykim]

It's always my great pleasure to know how it gets used.
Please leave your comment if you're using libasyncd.
Many thanks.

[tony-o]

@wolkykim i'm trying to use libasyncd - i'm unable to link to the libraries in debian. is there something other than make install i need to do? it copies into /usr/local/[lib|include] but both locate and ldd aren't able to find the libs..

[wolkykim]

Sorry for late response. I hope you have resolved the issue already.
For header files, have you tried to give -I/usr/local/include option to your GCC?
Also for library, you need to run ldconfig as root to flush ldconfig cache or you could use LD_LIBRARY_PATH env variable. More detail => http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html

[wolkykim]

Hi TixLo,
Thanks for your time providing this. I think it's a valuable feature to this library, a way to provide async return over async message. As you said, this is temporarily code, would you like to make an official patch that we can merge to the main?

[TixLo]

Hi Wolkykim,
Thanks for your kindly reply and I will make an official path about this issue to you in few days later. Beside the issue, I found a crashing issue. Here is my sample code

I replaced my_conn_handler function with my_https_handler in according to helloworld_http_server.c in helloworld_ssl_server.c but it would crashed when received a HTTPS request. I tried to fixed but failed. Would you check this issue, please?
Thanks

    ad_server_t *server = ad_server_new();
    ad_server_set_option(server, "server.port", "8888");
    ad_server_set_option(server, "server.enable_ssl", "1");
    ad_server_set_option(server, "server.ssl_cert", "ssl.cert");
    ad_server_set_option(server, "server.ssl_pkey", "ssl.pkey");
    //ad_server_register_hook(server, my_conn_handler, NULL);
    ad_server_register_hook(server, ad_https_handler, NULL); // HTTP Parser is also a hook.
    ad_server_register_hook_on_method(server, "POST", my_http_post_handler, NULL);
    ad_server_register_hook(server, my_http_default_handler, NULL);
    return ad_server_start(server);

the callstack of segmentation fault is below and I tried to return 0 when it happened. It didn't work.

int ad_http_is_keepalive_request(ad_conn_t *conn) {
    ad_http_t *http = (ad_http_t *) ad_conn_get_extra(conn); // http is NULL pointer
    if (http->request.httpver == NULL) {
        return 0;
    }

[wolkykim]

Does it launch a thread in my-https-handler? If then possibily the connection was terminated already and conn was reset? Not sure, can you send me the core dump file and the full code to [email protected]?

[wilbertom]

Hey @wolkykim, I started learning C this month and wanted to make a server in it. I chose this library after googling because it was small. In theory I could read it and learn. One thing I quickly wanted was a router, so I made a small one. I don't know much C(coming from Python) so the code is probably filled with bugs, I wanted to share my ideas though. Thanks for an awesome library!

#include <asyncd/asyncd.h>

#include <asyncdext/asyncdext.h>
#include <asyncdext/router.h>

int index(short event, ad_conn_t *conn, void *userdata) {
    ad_http_response(conn, 200, "text/html", "Home page", 9);

    return AD_DONE;
}

int about(short event, ad_conn_t *conn, void *userdata) {
    ad_http_response(conn, 200, "text/html", "About page", 10);
    return AD_DONE;
}

int main(int argc, char *argv[]) {
    ad_server_t *server = ad_server_new();

    ad_server_set_option(server, "server.port", "8888");

    adext_router_t *router = adext_router_new(2);
    adext_router_add(router, "^/$", index);
    adext_router_add(router, "^/about/$", about);

    ad_server_register_hook(server, ad_http_handler, NULL);
    adext_router_register_hook(router, server);

    return ad_server_start(server);

}

I think we can add more than one router per server, haven't tried it. I'm planning to add more features.

[dascandy]

I'm using it to make a proof of concept for a certain way of deployment & building. Part of it is to expose an HTTPS server interface and one possible implementation is using libasyncd.

[manjunathkokhle]

Hi,
I am trying to use the libasyncd for the embeded application as config server for very few clients <100. after few days of understanding i feel this is well suited for my usage. but i would have loved it it was stand alone app without using libevent & qlibc. FInally when i am porting the app from linux to embeded platform i am stuck at using eventfd which my Glibc version doesnot support..
it would be great if some guidance is being provided..