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net: move-only: improve encapsulation of SockMan

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`SockMan` members

`AcceptConnection()`
`NewSockAccepted()`
`GetNewId()`
`m_i2p_sam_session`
`m_listen`

are now used only by `SockMan`, thus make them private.
This commit is contained in:
Vasil Dimov 2024-09-23 11:05:59 +02:00
parent 1ef4f2ee43
commit 7ef9661fb0
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GPG key ID: 54DF06F64B55CBBF
2 changed files with 94 additions and 94 deletions
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118
src/common/sockman.cpp
View file

@ -222,65 +222,6 @@ SockMan::ConnectAndMakeId(const std::variant<CService, StringHostIntPort>& to,
return id;
}
std::unique_ptr<Sock> SockMan::AcceptConnection(const Sock& listen_sock, CService& addr)
{
sockaddr_storage storage;
socklen_t len{sizeof(storage)};
auto sock{listen_sock.Accept(reinterpret_cast<sockaddr*>(&storage), &len)};
if (!sock) {
const int err{WSAGetLastError()};
if (err != WSAEWOULDBLOCK) {
LogPrintLevel(BCLog::NET,
BCLog::Level::Error,
"Cannot accept new connection: %s\n",
NetworkErrorString(err));
}
return {};
}
if (!addr.SetSockAddr(reinterpret_cast<sockaddr*>(&storage), len)) {
LogPrintLevel(BCLog::NET, BCLog::Level::Warning, "Unknown socket family\n");
}
return sock;
}
void SockMan::NewSockAccepted(std::unique_ptr<Sock>&& sock, const CService& me, const CService& them)
{
AssertLockNotHeld(m_connected_mutex);
if (!sock->IsSelectable()) {
LogPrintf("connection from %s dropped: non-selectable socket\n", them.ToStringAddrPort());
return;
}
// According to the internet TCP_NODELAY is not carried into accepted sockets
// on all platforms. Set it again here just to be sure.
const int on{1};
if (sock->SetSockOpt(IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) == SOCKET_ERROR) {
LogDebug(BCLog::NET, "connection from %s: unable to set TCP_NODELAY, continuing anyway\n",
them.ToStringAddrPort());
}
const Id id{GetNewId()};
{
LOCK(m_connected_mutex);
m_connected.emplace(id, std::make_shared<ConnectionSockets>(std::move(sock)));
}
if (!EventNewConnectionAccepted(id, me, them)) {
CloseConnection(id);
}
}
SockMan::Id SockMan::GetNewId()
{
return m_next_id.fetch_add(1, std::memory_order_relaxed);
}
bool SockMan::CloseConnection(Id id)
{
LOCK(m_connected_mutex);
@ -417,6 +358,65 @@ void SockMan::ThreadSocketHandler()
}
}
std::unique_ptr<Sock> SockMan::AcceptConnection(const Sock& listen_sock, CService& addr)
{
sockaddr_storage storage;
socklen_t len{sizeof(storage)};
auto sock{listen_sock.Accept(reinterpret_cast<sockaddr*>(&storage), &len)};
if (!sock) {
const int err{WSAGetLastError()};
if (err != WSAEWOULDBLOCK) {
LogPrintLevel(BCLog::NET,
BCLog::Level::Error,
"Cannot accept new connection: %s\n",
NetworkErrorString(err));
}
return {};
}
if (!addr.SetSockAddr(reinterpret_cast<sockaddr*>(&storage), len)) {
LogPrintLevel(BCLog::NET, BCLog::Level::Warning, "Unknown socket family\n");
}
return sock;
}
void SockMan::NewSockAccepted(std::unique_ptr<Sock>&& sock, const CService& me, const CService& them)
{
AssertLockNotHeld(m_connected_mutex);
if (!sock->IsSelectable()) {
LogPrintf("connection from %s dropped: non-selectable socket\n", them.ToStringAddrPort());
return;
}
// According to the internet TCP_NODELAY is not carried into accepted sockets
// on all platforms. Set it again here just to be sure.
const int on{1};
if (sock->SetSockOpt(IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) == SOCKET_ERROR) {
LogDebug(BCLog::NET, "connection from %s: unable to set TCP_NODELAY, continuing anyway\n",
them.ToStringAddrPort());
}
const Id id{GetNewId()};
{
LOCK(m_connected_mutex);
m_connected.emplace(id, std::make_shared<ConnectionSockets>(std::move(sock)));
}
if (!EventNewConnectionAccepted(id, me, them)) {
CloseConnection(id);
}
}
SockMan::Id SockMan::GetNewId()
{
return m_next_id.fetch_add(1, std::memory_order_relaxed);
}
SockMan::IOReadiness SockMan::GenerateWaitSockets()
{
AssertLockNotHeld(m_connected_mutex);

70
src/common/sockman.h
View file

@ -128,29 +128,6 @@ public:
CService& me)
EXCLUSIVE_LOCKS_REQUIRED(!m_connected_mutex, !m_unused_i2p_sessions_mutex);
/**
* Accept a connection.
* @param[in] listen_sock Socket on which to accept the connection.
* @param[out] addr Address of the peer that was accepted.
* @return Newly created socket for the accepted connection.
*/
std::unique_ptr<Sock> AcceptConnection(const Sock& listen_sock, CService& addr);
/**
* After a new socket with a peer has been created, configure its flags,
* make a new connection id and call `EventNewConnectionAccepted()`.
* @param[in] sock The newly created socket.
* @param[in] me Address at our end of the connection.
* @param[in] them Address of the new peer.
*/
void NewSockAccepted(std::unique_ptr<Sock>&& sock, const CService& me, const CService& them)
EXCLUSIVE_LOCKS_REQUIRED(!m_connected_mutex);
/**
* Generate an id for a newly created connection.
*/
Id GetNewId();
/**
* Destroy a given connection by closing its socket and release resources occupied by it.
* @param[in] id Connection to destroy.
@ -189,18 +166,6 @@ public:
*/
CThreadInterrupt interruptNet;
/**
* I2P SAM session.
* Used to accept incoming and make outgoing I2P connections from a persistent
* address.
*/
std::unique_ptr<i2p::sam::Session> m_i2p_sam_session;
/**
* List of listening sockets.
*/
std::vector<std::shared_ptr<Sock>> m_listen;
protected:
/**
@ -391,6 +356,29 @@ private:
void ThreadSocketHandler()
EXCLUSIVE_LOCKS_REQUIRED(!m_connected_mutex);
/**
* Accept a connection.
* @param[in] listen_sock Socket on which to accept the connection.
* @param[out] addr Address of the peer that was accepted.
* @return Newly created socket for the accepted connection.
*/
std::unique_ptr<Sock> AcceptConnection(const Sock& listen_sock, CService& addr);
/**
* After a new socket with a peer has been created, configure its flags,
* make a new connection id and call `EventNewConnectionAccepted()`.
* @param[in] sock The newly created socket.
* @param[in] me Address at our end of the connection.
* @param[in] them Address of the new peer.
*/
void NewSockAccepted(std::unique_ptr<Sock>&& sock, const CService& me, const CService& them)
EXCLUSIVE_LOCKS_REQUIRED(!m_connected_mutex);
/**
* Generate an id for a newly created connection.
*/
Id GetNewId();
/**
* Generate a collection of sockets to check for IO readiness.
* @return Sockets to check for readiness plus an aux map to find the
@ -450,6 +438,18 @@ private:
*/
std::queue<std::unique_ptr<i2p::sam::Session>> m_unused_i2p_sessions GUARDED_BY(m_unused_i2p_sessions_mutex);
/**
* I2P SAM session.
* Used to accept incoming and make outgoing I2P connections from a persistent
* address.
*/
std::unique_ptr<i2p::sam::Session> m_i2p_sam_session;
/**
* List of listening sockets.
*/
std::vector<std::shared_ptr<Sock>> m_listen;
mutable Mutex m_connected_mutex;
/**