TCPServer: pass connection fails to clients

src/merge_mining_client_tari.cpp

@@ -895,6 +895,7 @@ void MergeMiningClientTari::TariClient::break_pairing()
 {
 	if (is_paired()) {
 		m_pairedClient->m_pairedClient = nullptr;
+		m_pairedClient->m_pairedClientSavedResetCounter = std::numeric_limits<uint32_t>::max();
 		m_pairedClient->close();
 	}
 	m_pairedClient = nullptr;

src/merge_mining_client_tari.h

@@ -116,6 +116,7 @@ private:
 		void reset() override { break_pairing(); }
 		[[nodiscard]] bool on_connect() override;
 		[[nodiscard]] bool on_read(const char* data, uint32_t size) override;
+		void on_connect_failed(int /*err*/) override { break_pairing(); }
 		void on_disconnected() override { break_pairing(); }
 
 		alignas(8) char m_buf[BUF_SIZE];

src/tcp_server.cpp

@@ -766,6 +766,7 @@ void TCPServer::on_connect(uv_connect_t* req, int status)
 			LOGWARN(5, "failed to connect to " << static_cast<char*>(client->m_addrString) << ", error " << uv_err_name(status));
 		}
 		server->on_connect_failed(client->m_isV6, client->m_addr, client->m_port);
+		client->on_connect_failed(status);
 		uv_close(reinterpret_cast<uv_handle_t*>(&client->m_socket), on_connection_error);
 		return;
 	}

src/tcp_server.h

@@ -65,6 +65,7 @@ public:
 		[[nodiscard]] virtual bool on_connect() = 0;
 		[[nodiscard]] virtual bool on_read(const char* data, uint32_t size) = 0;
 		[[nodiscard]] bool on_proxy_handshake(const char* data, uint32_t size);
+		virtual void on_connect_failed(int /*err*/) {}
 		virtual void on_read_failed(int /*err*/) {}
 		virtual void on_disconnected() {}