host_discovery.cpp File Reference

Implements host auto-discovery helpers. More...

#include "src/network/host_discovery.h"
#include <algorithm>
#include <cctype>
#include <cstdint>
#include <mutex>
#include <string>
#include <string_view>
#include <unordered_map>
#include <utility>
#include <vector>
#include "src/app/host_records.h"
#include "src/logging/logger.h"
#include "src/network/runtime_network.h"
#include <cstddef>
#include <lwip/apps/mdns.h>
#include <lwip/apps/mdns_domain.h>
#include <lwip/err.h>
#include <lwip/igmp.h>
#include <lwip/netif.h>
#include <lwip/prot/dns.h>
#include <lwip/tcpip.h>
#include <windows.h>

Include dependency graph for host_discovery.cpp:

Functions
bool	network::testing::append_mdns_discovered_host (DiscoverHostsResult *result, std::string displayName, const std::string &address, uint16_t port)
	Expose host normalization and deduplication to host-native unit tests.
void	network::testing::clear_host_discovery_test_handler ()
	Remove any scripted host-discovery handler installed for tests.
DiscoverHostsResult	network::discover_hosts (uint32_t timeoutMilliseconds)
	Discover Moonlight-compatible hosts on the local network.
std::string	network::testing::first_host_discovery_label (std::string_view domainText)
	Expose the internal DNS-label parser to host-native unit tests.
void	network::testing::set_host_discovery_test_handler (HostDiscoveryTestHandler handler)
	Install a scripted host-discovery handler for unit tests.
void	network::testing::sort_discovered_hosts (std::vector< DiscoveredHost > *hosts)
	Expose the runtime host ordering rules to host-native unit tests.
std::string	network::testing::trim_host_discovery_text (std::string_view text)
	Expose the internal whitespace trimmer to host-native unit tests.

Variables
struct netif *	g_pnetif
	nxdk-provided pointer to the active lwIP network interface.

Detailed Description

Implements host auto-discovery helpers.

Function Documentation

append_mdns_discovered_host()

bool network::testing::append_mdns_discovered_host	(	DiscoverHostsResult *	result,
		std::string	displayName,
		const std::string &	address,
		uint16_t	port )

Expose host normalization and deduplication to host-native unit tests.

Parameters

result	Discovery result to update.
displayName	Candidate user-facing label.
address	Candidate IPv4 address.
port	Candidate HTTP port, or zero for the default port.

Returns

True when a new host was appended.

discover_hosts()

DiscoverHostsResult network::discover_hosts

(

uint32_t

timeoutMilliseconds

)

Discover Moonlight-compatible hosts on the local network.

The Xbox build uses lwIP mDNS/DNS-SD search support to look for compatible GameStream services. Host-native test builds return scripted results when a test handler is installed, or an empty successful result otherwise.

Parameters

timeoutMilliseconds

Maximum discovery window in milliseconds.

Returns

Discovered hosts plus an optional error message.

first_host_discovery_label()

std::string network::testing::first_host_discovery_label

(

std::string_view

domainText

)

Expose the internal DNS-label parser to host-native unit tests.

Parameters

domainText

Service instance or host domain text.

Returns

The first DNS label after discovery-style trimming.

set_host_discovery_test_handler()

void network::testing::set_host_discovery_test_handler

(

HostDiscoveryTestHandler

handler

)

Install a scripted host-discovery handler for unit tests.

Parameters

handler

Callback that should service subsequent discovery requests.

sort_discovered_hosts()

void network::testing::sort_discovered_hosts

(

std::vector< DiscoveredHost > *

hosts

)

Expose the runtime host ordering rules to host-native unit tests.

Parameters

hosts

Hosts to sort in place.

trim_host_discovery_text()

std::string network::testing::trim_host_discovery_text

(

std::string_view

text

)

Expose the internal whitespace trimmer to host-native unit tests.

Parameters

text	Raw discovery text.

Returns

Discovery text with surrounding ASCII whitespace removed.