cwSocket.h/cpp : added callback on connection.

README.md

@@ -28,11 +28,17 @@
 
 1) Install libwebsockets.
 
+```
+    sudo dnf install g++ openssl-devel cmake
     cd sdk
     git clone https://libwebsockets.org/repo/libwebsockets
     cd libwebsockets
     mkdir build
     cd build
-    sudo dnf install openssl-devel cmake
     cmake -DCMAKE_INSTALL_PREFIX:PATH=/home/kevin/sdk/libwebsockets/build/out ..
+```
+
+2) Environment setup:
+
+    export LD_LIBRARY_PATH=~/sdk/libwebsockets/build/out/lib
     

cwSocket.cpp

@@ -206,6 +206,9 @@ namespace cw
         goto errLabel;
       }
 
+      printf("Socket: userId:%i connected.", s->userId);
+      
+      
       // initialize the socket record
       cs = p->sockA + sockIdx;
 
@@ -226,6 +229,10 @@ namespace cw
       if((rc = addrToString( (const struct sockaddr_in*)&remoteAddr, cs->ntopBuf,  sizeof(cs->ntopBuf) )) != kOkRC )
         goto errLabel;      
 
+      if( s->cbFunc != nullptr )
+        s->cbFunc( s->cbArg, kConnectCbId, s->userId, s->connId, nullptr, 0, (const struct sockaddr_in*)&remoteAddr );
+
+      
     errLabel:
       if( rc != kOkRC )
         close(fd);
@@ -415,7 +422,16 @@ namespace cw
 
       // ... and connect this socket to the remote address/port
       if( connect(s->sockH, (struct sockaddr*)&addr, sizeof(addr)) == cwSOCKET_SYS_ERR )
-        return cwLogSysError(kOpFailRC, errno, "Socket connect to %s:%i failed.", cwStringNullGuard(remoteAddr), remotePort );
+      {
+        if( cwIsNotFlag(s->createFlags, kBlockingFl) && errno == EINPROGRESS )
+        {
+          // if the socket is non-blocking the connection will complete asynchronously
+        }
+        else
+        {
+          return cwLogSysError(kOpFailRC, errno, "Socket connect to %s:%i failed.", cwStringNullGuard(remoteAddr), remotePort );
+        }
+      }
       
       s->flags = cwSetFlag(s->flags,kIsConnectedFl);
 
@@ -1094,7 +1110,7 @@ namespace cw
       return true;
     }
 
-    void _socketTestCbFunc( void* cbArg, sock::cbId_t cbId, unsigned userId, unsigned connId, const void* byteA, unsigned byteN, struct sockaddr_in* srcAddr )
+    void _socketTestCbFunc( void* cbArg, sock::cbId_t cbId, unsigned userId, unsigned connId, const void* byteA, unsigned byteN, const struct sockaddr_in* srcAddr )
     {
       rc_t rc;
       char addr[ INET_ADDRSTRLEN+1 ];

cwSocket.h

@@ -20,7 +20,7 @@ namespace cw
     
     // userId is the id assigned to the receiving socket
     // connId is an automatically assigned id which represents the remote endpoint which is connected to 'userId'.
-    typedef void (*callbackFunc_t)( void* cbArg, cbId_t cbId, unsigned userId, unsigned connId, const void* byteA, unsigned byteN, struct sockaddr_in* srcAddr );
+    typedef void (*callbackFunc_t)( void* cbArg, cbId_t cbId, unsigned userId, unsigned connId, const void* byteA, unsigned byteN, const struct sockaddr_in* srcAddr );
 
     enum
     {