posix_quic-master socket关闭函数以及流关闭

最新推荐文章于 2025-05-15 15:41:23 发布

原创最新推荐文章于 2025-05-15 15:41:23 发布 · 470 阅读

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本文详细解析了QUIC协议中Socket与Stream的关闭流程，包括QuicCloseSocket与QuicCloseStream函数的具体实现，展示了如何通过EntryBase获取连接入口并执行关闭操作，同时介绍了与关闭操作相关的状态检查与资源清理过程。

//关闭quicsocket

QuicCloseSocket(conn);

//跟踪这个函数

int QuicCloseSocket(QuicSocket sock)
{
    EntryPtr entry = EntryBase::GetFdManager().Get(sock);
    if (!entry || entry->Category() != EntryCategory::Socket) {
        DebugPrint(dbg_api, "sock = %d, return = -1, errno = EBADF", sock);
        errno = EBADF;
        return -1;
    }

    auto socket = std::dynamic_pointer_cast<QuicSocketEntry>(entry);
    socket->Close();
    QuicSocketEntry::DeleteQuicSocketEntry(socket);
    DebugPrint(dbg_api, "sock = %d, return = 0", sock);
    return 0;
}

//CLose()函数

socket->Close();

int QuicSocketEntry::Close()
{
    if (socketState_ == QuicSocketState_Closed)
        return 0;

    std::unique_lock<std::recursive_mutex> lock(mtx_);
    if (socketState_ == QuicSocketState_Closed)
        return 0;

    socketState_ = QuicSocketState_Closed;
    connectionVisitor_.CancelNoAckAlarm();
    if (udpSocket_)
        GetConnectionManager().Delete(*udpSocket_, impl_->connection_id(), Fd());
    impl_->CloseConnection("");
    ClearWaitingsByClose();
    ClearAcceptSocketByClose();
    return 0;
}

//流关闭

QuicCloseStream(fd);

跟踪这个函数

int QuicCloseStream(QuicStream stream)
{
    auto entry = EntryBase::GetFdManager().Get(stream);
    if (!entry || entry->Category() != EntryCategory::Stream) {
        DebugPrint(dbg_api, "stream = %d, return = -1, errno = EBADF", stream);
        errno = EBADF;
        return -1;
    }

    entry->Close();
    auto streamPtr = std::dynamic_pointer_cast<QuicStreamEntry>(entry);
    QuicStreamEntry::DeleteQuicStream(streamPtr);
    DebugPrint(dbg_api, "stream = %d, return = 0", stream);
    return 0;
}

//关闭函数

entry->Close();