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API Reference

This page summarizes the public API of the Vix WebSocket module.

Use it when you want a quick reference for headers, classes, callbacks, configuration, server APIs, client APIs, sessions, long-polling, metrics, persistence, OpenAPI, and attached HTTP + WebSocket runtime helpers.

Main header

Use the umbrella header for most applications:

cpp

#include <vix/websocket.hpp>

This includes the main WebSocket APIs.

Direct headers

cpp

#include <vix/websocket/config.hpp>
#include <vix/websocket/protocol.hpp>
#include <vix/websocket/client.hpp>
#include <vix/websocket/server.hpp>
#include <vix/websocket/session.hpp>
#include <vix/websocket/router.hpp>
#include <vix/websocket/MessageStore.hpp>
#include <vix/websocket/SqliteMessageStore.hpp>
#include <vix/websocket/Metrics.hpp>
#include <vix/websocket/App.hpp>
#include <vix/websocket/HttpApi.hpp>
#include <vix/websocket/LongPolling.hpp>
#include <vix/websocket/LongPollingBridge.hpp>
#include <vix/websocket/AttachedRuntime.hpp>
#include <vix/websocket/Runtime.hpp>

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Namespace

The main namespace is:

cpp

namespace vix::websocket

Some combined runtime helpers live in:

cpp

namespace vix

Public API overview

API	Purpose
`Config`	WebSocket runtime configuration.
`JsonMessage`	Typed JSON message model.
`Server`	High-level WebSocket server.
`LowLevelServer`	Low-level native async WebSocket engine.
`Session`	One connected WebSocket client.
`Router`	Dispatches open, close, error, and message events.
`Client`	Native WebSocket client.
`LongPollingSession`	In-memory long-polling session buffer.
`LongPollingManager`	Thread-safe manager for polling sessions.
`LongPollingBridge`	Bridge between WebSocket and long-polling.
`WebSocketMetrics`	Prometheus-style metrics counters and gauges.
`IMessageStore`	Abstract message persistence interface.
`SqliteMessageStore`	SQLite-backed message store.
`AttachedRuntime`	Runs WebSocket beside a `vix::App`.
`register_ws_docs(...)`	Registers OpenAPI docs for WebSocket endpoints.

Config

Header:

cpp

#include <vix/websocket/config.hpp>

Type:

cpp

vix::websocket::Config

Fields:

cpp

std::size_t maxMessageSize = 64 * 1024;
std::chrono::seconds idleTimeout{60};
bool enablePerMessageDeflate = true;
bool autoPingPong = true;
std::chrono::seconds pingInterval{30};

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Static functions:

cpp

static Config from_core(const vix::config::Config &core);

Example:

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vix::config::Config core{".env"};

vix::websocket::Config ws =
    vix::websocket::Config::from_core(core);

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Configuration keys

Common environment values:

dotenv

WEBSOCKET_HOST=0.0.0.0
WEBSOCKET_PORT=9090
WEBSOCKET_MAX_MESSAGE_SIZE=65536
WEBSOCKET_IDLE_TIMEOUT=60
WEBSOCKET_ENABLE_DEFLATE=true
WEBSOCKET_PING_INTERVAL=30
WEBSOCKET_AUTO_PING_PONG=true

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Server

Header:

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#include <vix/websocket/server.hpp>

Type:

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vix::websocket::Server

Purpose:

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High-level WebSocket server with sessions, callbacks, rooms, broadcasting,
typed messages, shutdown, and optional long-polling bridge integration.

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Server construction

cpp

Server(
    vix::config::Config &cfg,
    std::shared_ptr<vix::executor::RuntimeExecutor> executor);

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cpp

Server(
    vix::config::Config &cfg,
    std::unique_ptr<vix::executor::RuntimeExecutor> executor);

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Example:

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vix::config::Config config{".env"};

auto executor =
    std::make_shared<vix::executor::RuntimeExecutor>(4);

vix::websocket::Server ws{config, executor};

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Server callback types

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using OpenHandler =
    std::function<void(Session &)>;

using CloseHandler =
    std::function<void(Session &)>;

using ErrorHandler =
    std::function<void(Session &, const std::string &)>;

using MessageHandler =
    std::function<void(Session &, const std::string &)>;

using TypedMessageHandler =
    std::function<void(Session &, const std::string &, const vix::json::kvs &)>;

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Server callbacks

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void on_open(OpenHandler fn);
void on_close(CloseHandler fn);
void on_error(ErrorHandler fn);
void on_message(MessageHandler fn);
void on_typed_message(TypedMessageHandler fn);

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Example:

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ws.on_message(
  [](vix::websocket::Session &session, const std::string &message)
  {
    session.send_text("echo: " + message);
  });

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Typed example:

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ws.on_typed_message(
  [](vix::websocket::Session &session,
     const std::string &type,
     const vix::json::kvs &payload)
  {
    (void)payload;

    if (type == "ping")
    {
      session.send_text("pong");
    }
  });

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Server lifecycle

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void start();
void stop_async();
void stop();
void listen_blocking();

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Use:

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ws.start();

For shutdown:

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ws.stop_async();
ws.stop();

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stop_async() requests non-blocking shutdown.

stop() performs final blocking shutdown and joins internal server threads.

Server rooms

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void join_room(std::shared_ptr<Session> session, const RoomId &room);
void leave_room(std::shared_ptr<Session> session, const RoomId &room);

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Example:

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ws.on_open([&ws](vix::websocket::Session &session)
{
  ws.join_room(session.shared_from_this(), "chat:general");
});

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Server broadcasting

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void broadcast_text(const std::string &text);
void broadcast_text_to_room(const RoomId &room, const std::string &text);

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Examples:

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ws.broadcast_text("global message");
ws.broadcast_text_to_room("chat:general", "room message");

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Server long-polling bridge

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void attach_long_polling_bridge(LongPollingBridge *bridge);

Example:

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vix::websocket::LongPollingBridge bridge{
    &metrics,
    std::chrono::seconds{60},
    256};

ws.attach_long_polling_bridge(&bridge);

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Server information

Common server information APIs include:

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int port() const;
int bound_port() const;

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Use these to inspect the configured or bound WebSocket port when supported by the current build.

LowLevelServer

Header:

cpp

#include <vix/websocket/websocket.hpp>

Type:

cpp

vix::websocket::LowLevelServer

Purpose:

txt

Low-level asynchronous WebSocket server engine.

It owns:

async I/O context
TCP listener
accept loop
I/O worker threads
session creation
server shutdown state

Most applications should use vix::websocket::Server instead.

LowLevelServer API

cpp

LowLevelServer(
    vix::config::Config &coreConfig,
    std::shared_ptr<vix::executor::RuntimeExecutor> executor,
    std::shared_ptr<Router> router);

~LowLevelServer();

void run();
void stop_async();
void join_threads();

bool is_stop_requested() const;

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Session

Header:

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#include <vix/websocket/session.hpp>

Type:

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vix::websocket::Session

Purpose:

txt

Represents one connected WebSocket client.

A session manages:

HTTP Upgrade handshake
frame reads
frame writes
text messages
binary messages
close handling
heartbeat
idle timeout
router dispatch

Session construction

cpp

Session(
    std::unique_ptr<tcp_stream> stream,
    const Config &cfg,
    std::shared_ptr<Router> router,
    std::shared_ptr<vix::executor::RuntimeExecutor> executor,
    std::shared_ptr<io_context> ioc);

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Most applications do not construct sessions directly.

The low-level server creates them internally.

Session API

cpp

task<void> run();

void send_text(std::string_view text);
void send_binary(const void *data, std::size_t size);

void close(std::string reason = {});
bool is_open() const noexcept;

void emit_error(const std::string &message);
void shutdown_now() noexcept;

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Example:

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ws.on_message(
  [](vix::websocket::Session &session, const std::string &message)
  {
    if (session.is_open())
    {
      session.send_text("received: " + message);
    }
  });

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Router

Header:

cpp

#include <vix/websocket/router.hpp>

Type:

cpp

vix::websocket::Router

Purpose:

txt

Lightweight event dispatcher for WebSocket sessions.

Router handler types

cpp

using OpenHandler =
    std::function<void(Session &)>;

using CloseHandler =
    std::function<void(Session &)>;

using ErrorHandler =
    std::function<void(Session &, const std::string &)>;

using MessageHandler =
    std::function<void(Session &, std::string)>;

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Router registration API

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void on_open(OpenHandler cb);
void on_close(CloseHandler cb);
void on_error(ErrorHandler cb);
void on_message(MessageHandler cb);

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Router dispatch API

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void handle_open(Session &session) const;
void handle_close(Session &session) const;
void handle_error(Session &session, const std::string &error) const;
void handle_message(Session &session, std::string payload) const;

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Router inspection API

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bool has_open_handler() const noexcept;
bool has_close_handler() const noexcept;
bool has_error_handler() const noexcept;
bool has_message_handler() const noexcept;

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Most applications should register callbacks through Server instead of using Router directly.

Client

Header:

cpp

#include <vix/websocket/client.hpp>

Type:

cpp

vix::websocket::Client

Purpose:

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Native WebSocket client with async connect, text messages, typed JSON messages,
heartbeat, and optional reconnect.

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The client exposes callback setters, connection control, text sending, typed JSON sending, ping, close, and connection state helpers. :contentReference[oaicite:0]

Client construction

cpp

static std::shared_ptr<Client> create(
    std::string host,
    std::string port,
    std::string target = "/");

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Example:

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auto client =
    vix::websocket::Client::create("127.0.0.1", "9090", "/");

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Client callback types

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using OpenHandler =
    std::function<void()>;

using MessageHandler =
    std::function<void(const std::string &)>;

using CloseHandler =
    std::function<void()>;

using ErrorHandler =
    std::function<void(const std::string &)>;

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Client callbacks

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void on_open(OpenHandler cb);
void on_message(MessageHandler cb);
void on_close(CloseHandler cb);
void on_error(ErrorHandler cb);

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Example:

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client->on_open([client]()
{
  client->send_text("hello");
});

client->on_message([](const std::string &message)
{
  vix::print("received:", message);
});

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Client connection API

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void connect();
void close();

bool is_connected() const noexcept;

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connect() starts the client runtime thread and async connection flow.

close() closes the connection, stops runtime activity, and joins client threads when safe.

Client sending API

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void send_text(const std::string &text);

void send_json_message(
    const std::string &type,
    const vix::json::kvs &payload);

void send_json_message(
    const std::string &type,
    std::initializer_list<vix::json::token> payloadTokens);

void send(
    const std::string &type,
    const vix::json::kvs &payload);

void send(
    const std::string &type,
    std::initializer_list<vix::json::token> payloadTokens);

void send_ping();

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Example:

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client->send_json_message(
    "chat.message",
    {
      {"text", "Hello"}
    });

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The send(...) overloads are convenience aliases for typed JSON sending.

Client heartbeat and reconnect

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void enable_heartbeat(std::chrono::seconds interval);

void enable_auto_reconnect(
    bool enable,
    std::chrono::seconds delay = std::chrono::seconds{3});

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Example:

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client->enable_heartbeat(std::chrono::seconds{30});
client->enable_auto_reconnect(true, std::chrono::seconds{3});

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JsonMessage

Header:

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#include <vix/websocket/protocol.hpp>

Type:

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vix::websocket::JsonMessage

Purpose:

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Structured typed WebSocket message model.

Common fields:

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std::string id;
std::string kind;
std::string room;
std::string type;
std::string ts;
vix::json::kvs payload;

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Common shape:

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{
  "id": "00000000000000000001",
  "kind": "event",
  "room": "general",
  "type": "chat.message",
  "ts": "2026-05-17T10:00:00Z",
  "payload": {
    "text": "Hello"
  }
}

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JsonMessage API

Common API:

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static std::optional<JsonMessage> parse(const std::string &text);

std::string to_json_string() const;

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Example:

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auto parsed = vix::websocket::JsonMessage::parse(text);

if (parsed)
{
  vix::print("type:", parsed->type);
}

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Protocol detail API

Header:

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#include <vix/websocket/protocol.hpp>

The protocol layer includes internal frame helpers under:

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namespace vix::websocket::detail

Important internal types include:

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enum class Opcode;
struct Frame;
struct FrameHeader;

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Frame helpers are used by the client and session implementation.

Most applications should use Server, Session, Client, and JsonMessage instead of protocol internals.

LongPollingSession

Header:

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#include <vix/websocket/LongPolling.hpp>

Type:

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vix::websocket::LongPollingSession

Fields:

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std::string id;
std::chrono::steady_clock::time_point lastSeen;
std::deque<JsonMessage> buffer;

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API:

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LongPollingSession();
explicit LongPollingSession(std::string sessionId);

void touch() noexcept;

bool is_expired(
    std::chrono::seconds ttl,
    std::chrono::steady_clock::time_point now) const noexcept;

void enqueue(const JsonMessage &msg, std::size_t maxBufferSize);

std::vector<JsonMessage> drain(std::size_t maxCount);

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The session stores a bounded FIFO buffer and refreshes lastSeen when messages are enqueued or drained. :contentReference[oaicite:1]

LongPollingManager

Header:

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#include <vix/websocket/LongPolling.hpp>

Type:

cpp

vix::websocket::LongPollingManager

Purpose:

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Thread-safe manager for long-polling sessions and buffers.

LongPollingManager construction

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LongPollingManager(
    std::chrono::seconds sessionTtl = std::chrono::seconds{60},
    std::size_t maxBufferPerSession = 256,
    WebSocketMetrics *metrics = nullptr);

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Example:

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vix::websocket::LongPollingManager manager{
    std::chrono::seconds{60},
    256,
    &metrics};

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LongPollingManager API

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void push_to(const SessionId &sessionId, const JsonMessage &message);

std::vector<JsonMessage> poll(
    const SessionId &sessionId,
    std::size_t maxMessages = 50,
    bool createIfMissing = true);

void sweep_expired();

std::size_t session_count() const;

std::size_t buffer_size(const SessionId &sessionId) const;

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push_to(...) creates the session if missing, poll(...) drains up to maxMessages, and sweep_expired() removes inactive sessions based on TTL. :contentReference[oaicite:2]

LongPollingBridge

Header:

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#include <vix/websocket/LongPollingBridge.hpp>

Type:

cpp

vix::websocket::LongPollingBridge

Purpose:

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Bridge between WebSocket JsonMessage events and HTTP long-polling sessions.

LongPollingBridge aliases

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using SessionId = std::string;

using Resolver =
    std::function<SessionId(const JsonMessage &)>;

using HttpToWsForward =
    std::function<void(const JsonMessage &)>;

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LongPollingBridge constructors

With external manager:

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LongPollingBridge(
    LongPollingManager &manager,
    Resolver resolver = {},
    HttpToWsForward httpToWs = {});

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Owning manager:

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LongPollingBridge(
    WebSocketMetrics *metrics,
    std::chrono::seconds sessionTtl = std::chrono::seconds{60},
    std::size_t maxBufferPerSession = 256,
    Resolver resolver = {},
    HttpToWsForward httpToWs = {});

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LongPollingBridge API

cpp

void on_ws_message(const JsonMessage &msg);

std::vector<JsonMessage> poll(
    const SessionId &sessionId,
    std::size_t maxMessages = 50,
    bool createIfMissing = true);

void send_from_http(
    const SessionId &sessionId,
    const JsonMessage &msg);

LongPollingManager &manager() noexcept;
const LongPollingManager &manager() const noexcept;

std::size_t session_count() const;
std::size_t buffer_size(const SessionId &sid) const;

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Default resolution:

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if msg.room is not empty:
  session id = "room:" + msg.room
else:
  session id = "broadcast"

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WebSocketMetrics

Header:

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#include <vix/websocket/Metrics.hpp>

Type:

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vix::websocket::WebSocketMetrics

Purpose:

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Prometheus-style metrics for WebSocket and long-polling.

WebSocketMetrics fields

cpp

std::atomic<std::uint64_t> connections_total{0};
std::atomic<std::uint64_t> connections_active{0};

std::atomic<std::uint64_t> messages_in_total{0};
std::atomic<std::uint64_t> messages_out_total{0};

std::atomic<std::uint64_t> errors_total{0};

std::atomic<std::uint64_t> lp_sessions_total{0};
std::atomic<std::uint64_t> lp_sessions_active{0};

std::atomic<std::uint64_t> lp_polls_total{0};

std::atomic<std::uint64_t> lp_messages_buffered{0};
std::atomic<std::uint64_t> lp_messages_enqueued_total{0};
std::atomic<std::uint64_t> lp_messages_drained_total{0};

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WebSocketMetrics API

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std::string render_prometheus() const;

Example:

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vix::websocket::WebSocketMetrics metrics;

metrics.connections_total.fetch_add(1, std::memory_order_relaxed);

std::string text = metrics.render_prometheus();

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Metrics exporter

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void run_metrics_http_exporter(
    WebSocketMetrics &metrics,
    const std::string &address = "0.0.0.0",
    std::uint16_t port = 9100);

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Example:

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vix::websocket::run_metrics_http_exporter(
    metrics,
    "0.0.0.0",
    9100);

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The exporter serves Prometheus text at:

txt

GET /metrics

The exporter reads an HTTP request head, returns metrics.render_prometheus() for /metrics, and returns 404 for other targets. :contentReference[oaicite:3]

IMessageStore

Header:

cpp

#include <vix/websocket/MessageStore.hpp>

Type:

cpp

vix::websocket::IMessageStore

Purpose:

txt

Abstract persistence interface for JsonMessage history and replay.

IMessageStore API

cpp

virtual ~IMessageStore() = default;

virtual void append(const JsonMessage &msg) = 0;

virtual std::vector<JsonMessage> list_by_room(
    const std::string &room,
    std::size_t limit,
    const std::optional<std::string> &before_id = std::nullopt) = 0;

virtual std::vector<JsonMessage> replay_from(
    const std::string &start_id,
    std::size_t limit) = 0;

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SqliteMessageStore

Header:

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#include <vix/websocket/SqliteMessageStore.hpp>

Type:

cpp

vix::websocket::SqliteMessageStore

Purpose:

txt

SQLite-backed implementation of IMessageStore.

SqliteMessageStore construction

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explicit SqliteMessageStore(const std::string &db_path);

Example:

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vix::websocket::SqliteMessageStore store{"messages.db"};

SqliteMessageStore API

cpp

~SqliteMessageStore() override;

void append(const JsonMessage &msg) override;

std::vector<JsonMessage> list_by_room(
    const std::string &room,
    std::size_t limit,
    const std::optional<std::string> &before_id = std::nullopt) override;

std::vector<JsonMessage> replay_from(
    const std::string &start_id,
    std::size_t limit) override;

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The SQLite store opens or creates the database, enables WAL mode, creates the messages table, and stores fields such as id, kind, room, type, ts, and payload_json.

App

Header:

cpp

#include <vix/websocket/App.hpp>

Type:

cpp

vix::websocket::App

Purpose:

txt

High-level WebSocket application wrapper.

It manages:

config
executor
underlying WebSocket server
typed message routes
shutdown

App handler type

cpp

using TypedHandler =
    std::function<void(
        Session &,
        const std::string &type,
        const vix::json::kvs &payload)>;

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App construction

cpp

App(
    const std::string &configPath,
    std::shared_ptr<vix::executor::RuntimeExecutor> executor);

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Example:

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auto executor =
    std::make_shared<vix::executor::RuntimeExecutor>(4);

vix::websocket::App app{".env", executor};

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App API

cpp

App &ws(const std::string &endpoint, TypedHandler handler);

void run_blocking();
void stop() noexcept;

Server &server() noexcept;
vix::config::Config &config() noexcept;

std::shared_ptr<vix::executor::RuntimeExecutor> executor() noexcept;

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AttachedRuntime

Header:

cpp

#include <vix/websocket/AttachedRuntime.hpp>

Type:

cpp

vix::websocket::AttachedRuntime

Purpose:

txt

Attach a WebSocket server to a vix::App with shared lifecycle.

AttachedRuntime construction

cpp

AttachedRuntime(
    vix::App &app,
    vix::websocket::Server &ws,
    std::shared_ptr<vix::executor::RuntimeExecutor> exec);

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Example:

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vix::App app;

auto executor =
    std::make_shared<vix::executor::RuntimeExecutor>(4);

vix::websocket::Server ws{app.config(), executor};

vix::websocket::AttachedRuntime runtime{app, ws, executor};

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The constructor starts the WebSocket server and registers an HTTP shutdown callback. :contentReference[oaicite:4]

AttachedRuntime API

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void request_stop() noexcept;
void finalize_shutdown() noexcept;

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request_stop() requests non-blocking WebSocket shutdown.

finalize_shutdown() performs final blocking cleanup by stopping the WebSocket server and then stopping the shared executor. :contentReference[oaicite:5]

Combined runtime helpers

Header:

cpp

#include <vix/websocket/AttachedRuntime.hpp>

Namespace:

cpp

namespace vix

register_ws_openapi_docs_once

cpp

void register_ws_openapi_docs_once();

Registers WebSocket OpenAPI docs once per process.

Default documented routes:

txt

GET  /ws
GET  /ws/poll
POST /ws/send
GET  /metrics

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run_http_and_ws

cpp

void run_http_and_ws(
    vix::App &app,
    vix::websocket::Server &ws,
    std::shared_ptr<vix::executor::RuntimeExecutor> exec,
    const vix::config::Config &cfg);

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Port overload:

cpp

void run_http_and_ws(
    vix::App &app,
    vix::websocket::Server &ws,
    std::shared_ptr<vix::executor::RuntimeExecutor> exec,
    int port);

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Purpose:

txt

Run HTTP and WebSocket together with shared config and executor.

The combined runner registers WebSocket docs, HTTP OpenAPI routes, Swagger UI routes, creates an AttachedRuntime, then runs the HTTP app. :contentReference[oaicite:6]

serve_http_and_ws

cpp

serve_http_and_ws(configPath, port, fn);
serve_http_and_ws(fn);

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Purpose:

txt

High-level helper that creates Config, RuntimeExecutor, App, and WebSocket Server,
then lets the caller configure HTTP and WebSocket behavior.

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Example:

cpp

vix::serve_http_and_ws([](vix::App &app, vix::websocket::Server &ws)
{
  app.get("/", [](vix::Request &req, vix::Response &res)
  {
    (void)req;

    res.text("HTTP + WebSocket");
  });

  ws.on_message(
    [](vix::websocket::Session &session, const std::string &message)
    {
      session.send_text("echo: " + message);
    });
});

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OpenAPI docs

Header:

cpp

#include <vix/websocket/openapi_docs.hpp>

Namespace:

cpp

namespace vix::websocket::openapi

Function:

cpp

void register_ws_docs(
    std::string ws_upgrade_path = "/ws",
    std::string lp_poll_path = "/ws/poll",
    std::string lp_send_path = "/ws/send",
    std::string metrics_path = "/metrics");

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Example:

cpp

vix::websocket::openapi::register_ws_docs();

Custom paths:

cpp

vix::websocket::openapi::register_ws_docs(
    "/api/ws",
    "/api/ws/poll",
    "/api/ws/send",
    "/api/ws/metrics");

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HTTP API helpers

Header:

cpp

#include <vix/websocket/HttpApi.hpp>

Namespace:

cpp

namespace vix::websocket::http

Purpose:

txt

Helpers for long-polling HTTP endpoints and request parsing.

Common endpoints:

txt

GET  /ws/poll
POST /ws/send

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The helper code supports URL decoding, query parameter extraction, request target extraction, and integration with LongPollingBridge.

Minimal server example

cpp

#include <memory>
#include <string>

#include <vix/config/Config.hpp>
#include <vix/executor/RuntimeExecutor.hpp>
#include <vix/websocket.hpp>

int main()
{
  vix::config::Config config{".env"};

  auto executor =
      std::make_shared<vix::executor::RuntimeExecutor>(4);

  vix::websocket::Server ws{config, executor};

  ws.on_message(
    [](vix::websocket::Session &session, const std::string &message)
    {
      session.send_text("echo: " + message);
    });

  ws.start();

  return 0;
}

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Minimal client example

cpp

#include <memory>
#include <string>

#include <vix/print.hpp>
#include <vix/websocket.hpp>

int main()
{
  auto client =
      vix::websocket::Client::create("127.0.0.1", "9090", "/");

  client->on_open([client]()
  {
    client->send_text("hello");
  });

  client->on_message([](const std::string &message)
  {
    vix::print("received:", message);
  });

  client->connect();

  return 0;
}

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Minimal attached runtime example

cpp

#include <memory>
#include <string>

#include <vix.hpp>
#include <vix/websocket.hpp>

int main()
{
  vix::App app;

  auto executor =
      std::make_shared<vix::executor::RuntimeExecutor>(4);

  vix::websocket::Server ws{app.config(), executor};

  ws.on_message(
    [](vix::websocket::Session &session, const std::string &message)
    {
      session.send_text("echo: " + message);
    });

  vix::websocket::AttachedRuntime runtime{app, ws, executor};

  app.run(8080);

  return 0;
}

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API by use case

Use case	API
Start WebSocket server	`vix::websocket::Server`
Handle connection open	`Server::on_open(...)`
Handle raw message	`Server::on_message(...)`
Handle typed JSON message	`Server::on_typed_message(...)`
Reply to one client	`Session::send_text(...)`
Send binary payload	`Session::send_binary(...)`
Close one client	`Session::close(...)`
Broadcast to all clients	`Server::broadcast_text(...)`
Broadcast to room	`Server::broadcast_text_to_room(...)`
Join room	`Server::join_room(...)`
Leave room	`Server::leave_room(...)`
Create C++ client	`Client::create(...)`
Send client text	`Client::send_text(...)`
Send client typed JSON	`Client::send_json_message(...)`
Enable heartbeat	`Client::enable_heartbeat(...)`
Enable reconnect	`Client::enable_auto_reconnect(...)`
Use long-polling	`LongPollingManager`, `LongPollingBridge`
Export metrics	`WebSocketMetrics::render_prometheus()`
Run metrics exporter	`run_metrics_http_exporter(...)`
Store messages	`IMessageStore`
Store in SQLite	`SqliteMessageStore`
Attach HTTP + WebSocket	`AttachedRuntime`
Register OpenAPI docs	`register_ws_docs(...)`

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API Reference ​

Main header ​

Direct headers ​

Namespace ​

Public API overview ​

Config ​

Configuration keys ​

Server ​

Server construction ​

Server callback types ​

Server callbacks ​

Server lifecycle ​

Server rooms ​

Server broadcasting ​

Server long-polling bridge ​

Server information ​

LowLevelServer ​

LowLevelServer API ​

Session ​

Session construction ​

Session API ​

Router ​

Router handler types ​

Router registration API ​

Router dispatch API ​

Router inspection API ​

Client ​

Client construction ​

Client callback types ​

Client callbacks ​

Client connection API ​

Client sending API ​

Client heartbeat and reconnect ​

JsonMessage ​

JsonMessage API ​

Protocol detail API ​

LongPollingSession ​

LongPollingManager ​

LongPollingManager construction ​

LongPollingManager API ​

LongPollingBridge ​

LongPollingBridge aliases ​

LongPollingBridge constructors ​

LongPollingBridge API ​

WebSocketMetrics ​

WebSocketMetrics fields ​

WebSocketMetrics API ​

Metrics exporter ​

IMessageStore ​

IMessageStore API ​

SqliteMessageStore ​

SqliteMessageStore construction ​

SqliteMessageStore API ​

App ​

App handler type ​

App construction ​

App API ​

AttachedRuntime ​

AttachedRuntime construction ​

AttachedRuntime API ​

Combined runtime helpers ​

register_ws_openapi_docs_once ​

run_http_and_ws ​

serve_http_and_ws ​

OpenAPI docs ​

HTTP API helpers ​

Minimal server example ​

Minimal client example ​

Minimal attached runtime example ​

API by use case ​

Related pages ​

API Reference

Main header

Direct headers

Namespace

Public API overview

Config

Configuration keys

Server

Server construction

Server callback types

Server callbacks

Server lifecycle

Server rooms

Server broadcasting

Server long-polling bridge

Server information

LowLevelServer

LowLevelServer API

Session

Session construction

Session API

Router

Router handler types

Router registration API

Router dispatch API

Router inspection API

Client

Client construction

Client callback types

Client callbacks

Client connection API

Client sending API

Client heartbeat and reconnect

JsonMessage

JsonMessage API

Protocol detail API

LongPollingSession

LongPollingManager

LongPollingManager construction

LongPollingManager API

LongPollingBridge

LongPollingBridge aliases

LongPollingBridge constructors

LongPollingBridge API

WebSocketMetrics

WebSocketMetrics fields

WebSocketMetrics API

Metrics exporter

IMessageStore

IMessageStore API

SqliteMessageStore

SqliteMessageStore construction

SqliteMessageStore API

App

App handler type

App construction

App API

AttachedRuntime

AttachedRuntime construction

AttachedRuntime API

Combined runtime helpers

register_ws_openapi_docs_once

run_http_and_ws

serve_http_and_ws

OpenAPI docs

HTTP API helpers

Minimal server example

Minimal client example

Minimal attached runtime example

API by use case

Related pages