X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=examples%2Fcore-browse-services.c;h=563125b54ad326429722567d46d4f713f616a36a;hb=1a5dff7d166883e99fe1dba62dc3c407a9f7e332;hp=8df5454f0ebd158f1cc2f5845e3656de150a9b8d;hpb=b6306c88b9279d8194afa85a6497c39531b3bfa9;p=catta diff --git a/examples/core-browse-services.c b/examples/core-browse-services.c index 8df5454..563125b 100644 --- a/examples/core-browse-services.c +++ b/examples/core-browse-services.c @@ -1,29 +1,27 @@ -/* $Id$ */ - /* PLEASE NOTE * * This file demonstrates how to use Avahi's core API, this is * the embeddable mDNS stack for embedded applications. * * End user applications should *not* use this API and should use - * the DBUS or C APIs, please see + * the D-Bus or C APIs, please see * client-browse-services.c and glib-integration.c - * + * * I repeat, you probably do *not* want to use this example. */ /*** This file is part of avahi. - + avahi is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. - + avahi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. - + You should have received a copy of the GNU Lesser General Public License along with avahi; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 @@ -39,17 +37,19 @@ #include #include -#include -#include -#include -#include +#include +#include +#include +#include +#include static AvahiSimplePoll *simple_poll = NULL; +static AvahiServer *server = NULL; static void resolve_callback( AvahiSServiceResolver *r, - AvahiIfIndex interface, - AvahiProtocol protocol, + AVAHI_GCC_UNUSED AvahiIfIndex interface, + AVAHI_GCC_UNUSED AvahiProtocol protocol, AvahiResolverEvent event, const char *name, const char *type, @@ -58,25 +58,42 @@ static void resolve_callback( const AvahiAddress *address, uint16_t port, AvahiStringList *txt, - void* userdata) { - + AvahiLookupResultFlags flags, + AVAHI_GCC_UNUSED void* userdata) { + assert(r); /* Called whenever a service has been resolved successfully or timed out */ - if (event == AVAHI_RESOLVER_TIMEOUT) - fprintf(stderr, "Failed to resolve service '%s' of type '%s' in domain '%s'.\n", name, type, domain); - else { - char a[128], *t; - - assert(event == AVAHI_RESOLVER_FOUND); - - fprintf(stderr, "Service '%s' of type '%s' in domain '%s':\n", name, type, domain); + switch (event) { + case AVAHI_RESOLVER_FAILURE: + fprintf(stderr, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_server_errno(server))); + break; - avahi_address_snprint(a, sizeof(a), address); - t = avahi_string_list_to_string(txt); - fprintf(stderr, "\t%s:%u (%s) TXT=%s (cookie is %u)\n", host_name, port, a, t, avahi_string_list_get_service_cookie(txt)); - avahi_free(t); + case AVAHI_RESOLVER_FOUND: { + char a[AVAHI_ADDRESS_STR_MAX], *t; + + fprintf(stderr, "(Resolver) Service '%s' of type '%s' in domain '%s':\n", name, type, domain); + + avahi_address_snprint(a, sizeof(a), address); + t = avahi_string_list_to_string(txt); + fprintf(stderr, + "\t%s:%u (%s)\n" + "\tTXT=%s\n" + "\tcookie is %u\n" + "\tis_local: %i\n" + "\twide_area: %i\n" + "\tmulticast: %i\n" + "\tcached: %i\n", + host_name, port, a, + t, + avahi_string_list_get_service_cookie(txt), + !!(flags & AVAHI_LOOKUP_RESULT_LOCAL), + !!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA), + !!(flags & AVAHI_LOOKUP_RESULT_MULTICAST), + !!(flags & AVAHI_LOOKUP_RESULT_CACHED)); + avahi_free(t); + } } avahi_s_service_resolver_free(r); @@ -90,34 +107,49 @@ static void browse_callback( const char *name, const char *type, const char *domain, + AVAHI_GCC_UNUSED AvahiLookupResultFlags flags, void* userdata) { - + AvahiServer *s = userdata; assert(b); /* Called whenever a new services becomes available on the LAN or is removed from the LAN */ - fprintf(stderr, "%s: service '%s' of type '%s' in domain '%s'\n", - event == AVAHI_BROWSER_NEW ? "NEW" : "REMOVED", - name, - type, - domain); - - /* If it's new, let's resolve it */ - if (event == AVAHI_BROWSER_NEW) - - /* We ignore the returned resolver object. In the callback function - we free it. If the server is terminated before the callback - function is called the server will free the resolver for us. */ - - if (!(avahi_s_service_resolver_new(s, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, resolve_callback, s))) - fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_server_errno(s))); + switch (event) { + + case AVAHI_BROWSER_FAILURE: + + fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_server_errno(server))); + avahi_simple_poll_quit(simple_poll); + return; + + case AVAHI_BROWSER_NEW: + fprintf(stderr, "(Browser) NEW: service '%s' of type '%s' in domain '%s'\n", name, type, domain); + + /* We ignore the returned resolver object. In the callback + function we free it. If the server is terminated before + the callback function is called the server will free + the resolver for us. */ + + if (!(avahi_s_service_resolver_new(s, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, 0, resolve_callback, s))) + fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_server_errno(s))); + + break; + + case AVAHI_BROWSER_REMOVE: + fprintf(stderr, "(Browser) REMOVE: service '%s' of type '%s' in domain '%s'\n", name, type, domain); + break; + + case AVAHI_BROWSER_ALL_FOR_NOW: + case AVAHI_BROWSER_CACHE_EXHAUSTED: + fprintf(stderr, "(Browser) %s\n", event == AVAHI_BROWSER_CACHE_EXHAUSTED ? "CACHE_EXHAUSTED" : "ALL_FOR_NOW"); + break; + } } -int main(int argc, char*argv[]) { +int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) { AvahiServerConfig config; - AvahiServer *server = NULL; - AvahiSServiceBrowser *sb; + AvahiSServiceBrowser *sb = NULL; int error; int ret = 1; @@ -136,7 +168,12 @@ int main(int argc, char*argv[]) { config.publish_addresses = 0; config.publish_workstation = 0; config.publish_domain = 0; - + + /* Set a unicast DNS server for wide area DNS-SD */ + avahi_address_parse("192.168.50.1", AVAHI_PROTO_UNSPEC, &config.wide_area_servers[0]); + config.n_wide_area_servers = 1; + config.enable_wide_area = 1; + /* Allocate a new server */ server = avahi_server_new(avahi_simple_poll_get(simple_poll), &config, NULL, NULL, &error); @@ -148,26 +185,24 @@ int main(int argc, char*argv[]) { fprintf(stderr, "Failed to create server: %s\n", avahi_strerror(error)); goto fail; } - + /* Create the service browser */ - if (!(sb = avahi_s_service_browser_new(server, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, "_http._tcp", NULL, browse_callback, server))) { + if (!(sb = avahi_s_service_browser_new(server, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, "_ipp._tcp", NULL, 0, browse_callback, server))) { fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_server_errno(server))); goto fail; } - + /* Run the main loop */ - for (;;) - if (avahi_simple_poll_iterate(simple_poll, -1) != 0) - break; - + avahi_simple_poll_loop(simple_poll); + ret = 0; - + fail: - + /* Cleanup things */ if (sb) avahi_s_service_browser_free(sb); - + if (server) avahi_server_free(server);