net: remove Sock default constructor, it's not necessary

src/test/fuzz/util/net.cpp

@@ -56,9 +56,10 @@ CAddress ConsumeAddress(FuzzedDataProvider& fuzzed_data_provider) noexcept
 }
 
 FuzzedSock::FuzzedSock(FuzzedDataProvider& fuzzed_data_provider)
-    : m_fuzzed_data_provider{fuzzed_data_provider}, m_selectable{fuzzed_data_provider.ConsumeBool()}
+    : Sock{fuzzed_data_provider.ConsumeIntegralInRange<SOCKET>(INVALID_SOCKET - 1, INVALID_SOCKET)},
+      m_fuzzed_data_provider{fuzzed_data_provider},
+      m_selectable{fuzzed_data_provider.ConsumeBool()}
 {
-    m_socket = fuzzed_data_provider.ConsumeIntegralInRange<SOCKET>(INVALID_SOCKET - 1, INVALID_SOCKET);
 }
 
 FuzzedSock::~FuzzedSock()

src/test/sock_tests.cpp

@@ -60,7 +60,7 @@ BOOST_AUTO_TEST_CASE(move_assignment)
 {
     const SOCKET s = CreateSocket();
     Sock* sock1 = new Sock(s);
-    Sock* sock2 = new Sock();
+    Sock* sock2 = new Sock(INVALID_SOCKET);
     *sock2 = std::move(*sock1);
     delete sock1;
     BOOST_CHECK(!SocketIsClosed(s));
@@ -98,7 +98,7 @@ BOOST_AUTO_TEST_CASE(send_and_receive)
     SendAndRecvMessage(*sock0, *sock1);
 
     Sock* sock0moved = new Sock(std::move(*sock0));
-    Sock* sock1moved = new Sock();
+    Sock* sock1moved = new Sock(INVALID_SOCKET);
     *sock1moved = std::move(*sock1);
 
     delete sock0;

src/test/util/net.h

@@ -106,10 +106,10 @@ constexpr auto ALL_NETWORKS = std::array{
 class StaticContentsSock : public Sock
 {
 public:
-    explicit StaticContentsSock(const std::string& contents) : m_contents{contents}
+    explicit StaticContentsSock(const std::string& contents)
+        : Sock{INVALID_SOCKET},
+          m_contents{contents}
     {
-        // Just a dummy number that is not INVALID_SOCKET.
-        m_socket = INVALID_SOCKET - 1;
     }
 
     ~StaticContentsSock() override { m_socket = INVALID_SOCKET; }
@@ -192,6 +192,11 @@ public:
         return true;
     }
 
+    bool IsConnected(std::string&) const override
+    {
+        return true;
+    }
+
 private:
     const std::string m_contents;
     mutable size_t m_consumed{0};

src/util/sock.cpp

@@ -24,8 +24,6 @@ static inline bool IOErrorIsPermanent(int err)
     return err != WSAEAGAIN && err != WSAEINTR && err != WSAEWOULDBLOCK && err != WSAEINPROGRESS;
 }
 
-Sock::Sock() : m_socket(INVALID_SOCKET) {}
-
 Sock::Sock(SOCKET s) : m_socket(s) {}
 
 Sock::Sock(Sock&& other)

src/util/sock.h

@@ -26,10 +26,7 @@ static constexpr auto MAX_WAIT_FOR_IO = 1s;
 class Sock
 {
 public:
-    /**
-     * Default constructor, creates an empty object that does nothing when destroyed.
-     */
-    Sock();
+    Sock() = delete;
 
     /**
      * Take ownership of an existent socket.