5 files changed, 25 insertions, 20 deletions
diff --git a/src/net/ea/network.cpp b/src/net/ea/network.cpp
index 112e16891..679447a50 100644
--- a/src/net/ea/network.cpp
+++ b/src/net/ea/network.cpp
@@ -145,7 +145,7 @@ void Network::flush()
         return;
 
     SDL_mutexP(mMutex);
-    int ret = TcpNet::send(mSocket, mOutBuffer, mOutSize);
+    const int ret = TcpNet::send(mSocket, mOutBuffer, mOutSize);
     DEBUGLOG(std::string("Send ").append(toString(mOutSize)).append(" bytes"));
     if (ret < static_cast<int>(mOutSize))
     {
@@ -254,7 +254,7 @@ void Network::receive()
                     continue;
                 }
 
-                int ret = TcpNet::recv(mSocket, mInBuffer + mInSize,
+                const int ret = TcpNet::recv(mSocket, mInBuffer + mInSize,
                     BUFFER_SIZE - mInSize);
 
                 if (!ret)
diff --git a/src/net/eathena/gamehandler.cpp b/src/net/eathena/gamehandler.cpp
index 74f2a89ea..2ec9899c2 100644
--- a/src/net/eathena/gamehandler.cpp
+++ b/src/net/eathena/gamehandler.cpp
@@ -169,7 +169,7 @@ void GameHandler::disconnect2() const
     MessageOut outMsg(CMSG_CLIENT_DISCONNECT);
 }
 
-void GameHandler::processMapCharId(Net::MessageIn &msg)
+void GameHandler::processMapCharId(Net::MessageIn &msg) const
 {
     msg.readInt32(); // char id
 }
diff --git a/src/net/eathena/gamehandler.h b/src/net/eathena/gamehandler.h
index 4e3ef861b..2de3ccaac 100644
--- a/src/net/eathena/gamehandler.h
+++ b/src/net/eathena/gamehandler.h
@@ -56,7 +56,7 @@ class GameHandler final : public MessageHandler, public Ea::GameHandler
 
         void mapLoadedEvent() const override;
 
-        void processMapCharId(Net::MessageIn &msg);
+        void processMapCharId(Net::MessageIn &msg) const;
 
         bool mustPing() const override A_WARN_UNUSED
         { return true; }
diff --git a/src/net/sdltcpnet.cpp b/src/net/sdltcpnet.cpp
index b38bc8a67..97ed59443 100644
--- a/src/net/sdltcpnet.cpp
+++ b/src/net/sdltcpnet.cpp
@@ -24,14 +24,15 @@
 #include "logger.h"
 
 #include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <netdb.h>
 
 #if defined(M_TCPOK) && !defined(ANDROID)
+#include <netinet/in.h>
+#include <netdb.h>
 #include <linux/tcp.h>
 #else
-// using manual hack, because in this mode linux/tcp.h compiled with errors
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
 #include <netinet/tcp.h>
 // Use linear timeouts for thin streams
 #define TCP_THIN_LINEAR_TIMEOUTS 16
@@ -44,7 +45,8 @@
 #include "debug.h"
 
 // because actual struct is hidden in SDL_net we reinroducing it here
-struct TCPsocketHack {
+struct TCPsocketHack
+{
     int ready;
     int channel;
     IPaddress remoteAddress;
@@ -67,7 +69,7 @@ void TcpNet::closeSocket(TcpNet::Socket socket)
     SDLNet_TCP_Close(socket);
 }
 
-int TcpNet::send(TcpNet::Socket sock, const void *data, int len)
+int TcpNet::send(TcpNet::Socket sock, const void *const data, const int len)
 {
     return SDLNet_TCP_Send(sock, data, len);
 }
@@ -77,17 +79,19 @@ char *TcpNet::getError()
     return SDLNet_GetError();
 }
 
-int TcpNet::resolveHost(IPaddress *address, const char *host, Uint16 port)
+int TcpNet::resolveHost(IPaddress *const address, const char *host,
+                        const Uint16 port)
 {
     return SDLNet_ResolveHost(address, host, port);
 }
 
-TcpNet::Socket TcpNet::open(IPaddress *ip)
+TcpNet::Socket TcpNet::open(IPaddress *const ip)
 {
     TcpNet::Socket sock = SDLNet_TCP_Open(ip);
     if (sock && ip)
     {
-        TCPsocketHack *hack = reinterpret_cast<TCPsocketHack *>(sock);
+        const TCPsocketHack *const hack
+            = reinterpret_cast<const TCPsocketHack *const>(sock);
         // here we using some magic to compare TCPsocket and own padding
         // because actual struct TCPsocket not in headers
         if (hack)
@@ -116,7 +120,7 @@ TcpNet::Socket TcpNet::open(IPaddress *ip)
     return sock;
 }
 
-TcpNet::SocketSet TcpNet::allocSocketSet(int maxsockets)
+TcpNet::SocketSet TcpNet::allocSocketSet(const int maxsockets)
 {
     return SDLNet_AllocSocketSet(maxsockets);
 }
@@ -126,7 +130,7 @@ int TcpNet::addSocket(TcpNet::SocketSet set, TcpNet::Socket sock)
     return SDLNet_TCP_AddSocket(set, sock);
 }
 
-int TcpNet::checkSockets(TcpNet::SocketSet set, Uint32 timeout)
+int TcpNet::checkSockets(const TcpNet::SocketSet set, const Uint32 timeout)
 {
     return SDLNet_CheckSockets(set, timeout);
 }
diff --git a/src/net/sdltcpnet.h b/src/net/sdltcpnet.h
index c13b84063..18cb1338c 100644
--- a/src/net/sdltcpnet.h
+++ b/src/net/sdltcpnet.h
@@ -38,19 +38,20 @@ namespace TcpNet
 
     void closeSocket(TcpNet::Socket socket);
 
-    int send(TcpNet::Socket sock, const void *data, int len);
+    int send(TcpNet::Socket sock, const void *const data, const int len);
 
     char *getError();
 
-    int resolveHost(IPaddress *address, const char *host, Uint16 port);
+    int resolveHost(IPaddress *const address, const char *host,
+                    const Uint16 port);
 
-    TcpNet::Socket open(IPaddress *ip);
+    TcpNet::Socket open(IPaddress *const ip);
 
-    SocketSet allocSocketSet(int maxsockets);
+    SocketSet allocSocketSet(const int maxsockets);
 
     int addSocket(TcpNet::SocketSet set, TcpNet::Socket sock);
 
-    int checkSockets(TcpNet::SocketSet set, Uint32 timeout);
+    int checkSockets(const TcpNet::SocketSet set, const Uint32 timeout);
 
     int recv(TcpNet::Socket sock, void *data, int maxlen);