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nearbyconnections : Implement WifiLanV2 Discovery functions for /medium, /public(wrapper), /g3.

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PiperOrigin-RevId: 405782006
This commit is contained in:
edwinwu
2021-10-26 18:27:36 -07:00
committed by Copybara-Service
parent ef57b09fc3
commit 83480d6473
15 changed files with 786 additions and 85 deletions
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cpp/platform/impl/g3/wifi_lan_v2.cc
+35 -16
View File
@@ -25,7 +25,6 @@
#include "platform/base/logging.h"
#include "platform/base/medium_environment.h"
#include "platform/base/nsd_service_info.h"
#include "platform/base/prng.h"
namespace location {
namespace nearby {
@@ -195,11 +194,44 @@ bool WifiLanMediumV2::StopAdvertising(const NsdServiceInfo& nsd_service_info) {
bool WifiLanMediumV2::StartDiscovery(const std::string& service_type,
DiscoveredServiceCallback callback) {
return false;
NEARBY_LOGS(INFO) << "G3 WifiLan StartDiscovery: service_type="
<< service_type;
{
absl::MutexLock lock(&mutex_);
if (discovering_info_.Existed(service_type)) {
NEARBY_LOGS(INFO)
<< "G3 WifiLan StartDiscovery: Can't start discovery because "
"service_type="
<< service_type << " has started already.";
return false;
}
}
auto& env = MediumEnvironment::Instance();
env.UpdateWifiLanMediumV2ForDiscovery(*this, std::move(callback),
service_type, true);
{
absl::MutexLock lock(&mutex_);
discovering_info_.Add(service_type);
}
return true;
}
bool WifiLanMediumV2::StopDiscovery(const std::string& service_type) {
return false;
NEARBY_LOGS(INFO) << "G3 WifiLan StopDiscovery: service_type="
<< service_type;
{
absl::MutexLock lock(&mutex_);
if (!discovering_info_.Existed(service_type)) {
NEARBY_LOGS(INFO)
<< "G3 WifiLan StopDiscovery: Can't stop discovering because we "
"never started discovering.";
return false;
}
discovering_info_.Remove(service_type);
}
auto& env = MediumEnvironment::Instance();
env.UpdateWifiLanMediumV2ForDiscovery(*this, {}, service_type, false);
return true;
}
std::unique_ptr<api::WifiLanSocketV2> WifiLanMediumV2::ConnectToService(
@@ -218,19 +250,6 @@ std::unique_ptr<api::WifiLanServerSocketV2> WifiLanMediumV2::ListenForService(
return {};
}
std::pair<std::string, int> WifiLanMediumV2::GetFakeCredentials() const {
std::string ip_address;
ip_address.resize(4);
uint32_t raw_ip_addr = Prng().NextUint32();
uint16_t port = Prng().NextUint32();
ip_address[0] = static_cast<char>(raw_ip_addr >> 24);
ip_address[1] = static_cast<char>(raw_ip_addr >> 16);
ip_address[2] = static_cast<char>(raw_ip_addr >> 8);
ip_address[3] = static_cast<char>(raw_ip_addr >> 0);
return std::make_pair(ip_address, port);
}
} // namespace g3
} // namespace nearby
} // namespace location
cpp/platform/impl/g3/wifi_lan_v2.h
+15 -1
View File
@@ -223,11 +223,25 @@ class WifiLanMediumV2 : public api::WifiLanMediumV2 {
absl::flat_hash_set<std::string> service_types;
};
struct DiscoveringInfo {
bool Empty() const { return service_types.empty(); }
void Clear() { service_types.clear(); }
void Add(const std::string& service_type) {
service_types.insert(service_type);
}
void Remove(const std::string& service_type) {
service_types.erase(service_type);
}
bool Existed(const std::string& service_type) const {
return service_types.contains(service_type);
}
std::pair<std::string, int> GetFakeCredentials() const;
absl::flat_hash_set<std::string> service_types;
};
absl::Mutex mutex_;
AdvertisingInfo advertising_info_ ABSL_GUARDED_BY(mutex_);
DiscoveringInfo discovering_info_ ABSL_GUARDED_BY(mutex_);
};
} // namespace g3