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added Avahi Zeroconf

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badaix 2015-02-19 22:35:35 +01:00
parent af7f230e97
commit e8ffa1f243
10 changed files with 302 additions and 133 deletions
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121
client/browseAvahi.cpp
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@ -17,25 +17,33 @@
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "browseAvahi.h"
#include <unistd.h>
#include <iostream>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <time.h>
#include <avahi-client/client.h>
#include <avahi-client/lookup.h>
#include <avahi-common/simple-watch.h>
#include <avahi-common/malloc.h>
#include <avahi-common/error.h>
static AvahiSimplePoll *simple_poll = NULL;
static void resolve_callback(
BrowseAvahi::BrowseAvahi() : client_(NULL), sb_(NULL)
{
}
BrowseAvahi::~BrowseAvahi()
{
if (sb_)
avahi_service_browser_free(sb_);
if (client_)
avahi_client_free(client_);
if (simple_poll)
avahi_simple_poll_free(simple_poll);
}
void BrowseAvahi::resolve_callback(
AvahiServiceResolver *r,
AVAHI_GCC_UNUSED AvahiIfIndex interface,
AVAHI_GCC_UNUSED AvahiProtocol protocol,
@ -50,6 +58,7 @@ static void resolve_callback(
AvahiLookupResultFlags flags,
AVAHI_GCC_UNUSED void* userdata) {
BrowseAvahi* browseAvahi = static_cast<BrowseAvahi*>(userdata);
assert(r);
/* Called whenever a service has been resolved successfully or timed out */
@ -63,8 +72,14 @@ static void resolve_callback(
char a[AVAHI_ADDRESS_STR_MAX], *t;
fprintf(stderr, "Service '%s' of type '%s' in domain '%s':\n", name, type, domain);
avahi_address_snprint(a, sizeof(a), address);
browseAvahi->result_.host_ = host_name;
browseAvahi->result_.ip_ = a;
browseAvahi->result_.port_ = port;
browseAvahi->result_.proto_ = protocol;
browseAvahi->result_.valid_ = true;
t = avahi_string_list_to_string(txt);
fprintf(stderr,
"\t%s:%u (%s)\n"
@ -93,7 +108,8 @@ static void resolve_callback(
avahi_service_resolver_free(r);
}
static void browse_callback(
void BrowseAvahi::browse_callback(
AvahiServiceBrowser *b,
AvahiIfIndex interface,
AvahiProtocol protocol,
@ -104,7 +120,8 @@ static void browse_callback(
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
void* userdata) {
AvahiClient *c = (AvahiClient*)userdata;
// AvahiClient* client = (AvahiClient*)userdata;
BrowseAvahi* browseAvahi = static_cast<BrowseAvahi*>(userdata);
assert(b);
/* Called whenever a new services becomes available on the LAN or is removed from the LAN */
@ -124,8 +141,8 @@ static void browse_callback(
the callback function is called the server will free
the resolver for us. */
if (!(avahi_service_resolver_new(c, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, (AvahiLookupFlags)0, resolve_callback, c)))
fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_client_errno(c)));
if (!(avahi_service_resolver_new(browseAvahi->client_, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, (AvahiLookupFlags)0, resolve_callback, userdata)))
fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_client_errno(browseAvahi->client_)));
break;
@ -140,10 +157,12 @@ static void browse_callback(
}
}
static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
void BrowseAvahi::client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata) {
assert(c);
/* Called whenever the client or server state changes */
// BrowseAvahi* browseAvahi = static_cast<BrowseAvahi*>(userdata);
if (state == AVAHI_CLIENT_FAILURE) {
fprintf(stderr, "Server connection failure: %s\n", avahi_strerror(avahi_client_errno(c)));
@ -151,11 +170,10 @@ static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UN
}
}
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
AvahiClient *client = NULL;
AvahiServiceBrowser *sb = NULL;
bool BrowseAvahi::browse(const std::string& serviceName, int proto, AvahiResult& result, int timeout)
{
int error;
int ret = 1;
/* Allocate main loop object */
if (!(simple_poll = avahi_simple_poll_new())) {
@ -164,38 +182,51 @@ int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
}
/* Allocate a new client */
client = avahi_client_new(avahi_simple_poll_get(simple_poll), (AvahiClientFlags)0, client_callback, NULL, &error);
client_ = avahi_client_new(avahi_simple_poll_get(simple_poll), (AvahiClientFlags)0, client_callback, this, &error);
/* Check wether creating the client object succeeded */
if (!client) {
if (!client_) {
fprintf(stderr, "Failed to create client: %s\n", avahi_strerror(error));
goto fail;
}
/* Create the service browser */
if (!(sb = avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, "_snapcast._tcp", NULL, (AvahiLookupFlags)0, browse_callback, client))) {
fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client)));
if (!(sb_ = avahi_service_browser_new(client_, AVAHI_IF_UNSPEC, proto, serviceName.c_str(), NULL, (AvahiLookupFlags)0, browse_callback, this))) {
fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client_)));
goto fail;
}
/* Run the main loop */
avahi_simple_poll_loop(simple_poll);
ret = 0;
result_.valid_ = false;
while (timeout > 0)
{
avahi_simple_poll_iterate(simple_poll, 100);
timeout -= 100;
if (result_.valid_)
{
result = result_;
return true;
}
}
fail:
/* Cleanup things */
if (sb)
avahi_service_browser_free(sb);
if (client)
avahi_client_free(client);
if (simple_poll)
avahi_simple_poll_free(simple_poll);
return ret;
return false;
}
/*
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[])
{
std::string ip;
size_t port;
BrowseAvahi browseAvahi;
if (browseAvahi.browse("_snapcast._tcp", AVAHI_PROTO_INET, ip, port, 5000))
std::cout << ip << ":" << port << "\n";
return 0;
}
*/