use curl code for large apple ssl send

ixwebsocket/IXSocketAppleSSL.cpp

@@ -112,10 +112,45 @@ namespace ix
 
     OSStatus SocketAppleSSL::writeToSocket(SSLConnectionRef connection,
                                            const void* data,
-                                           size_t* len)
+                                           size_t* dataLength)
     {
-        int fd = (int) (long) connection;
-        if (fd < 0) return errSSLInternal;
+#if 1
+        int sock = (int) (long) connection;
+        if (sock < 0) return errSSLInternal;
+
+        size_t bytesSent = 0;
+
+        ssize_t length;
+        size_t dataLen = *dataLength;
+        const UInt8 *dataPtr = (UInt8 *)data;
+        OSStatus ortn;
+        int theErr;
+
+        *dataLength = 0;
+
+        do {
+            length = write(sock,
+                    (char *)dataPtr + bytesSent,
+                    dataLen - bytesSent);
+        } while((length > 0) &&
+                ( (bytesSent += length) < dataLen) );
+
+        if(length <= 0) {
+            theErr = errno;
+            if(theErr == EAGAIN) {
+                ortn = errSSLWouldBlock;
+            }
+            else {
+                ortn = errSecIO;
+            }
+        }
+        else {
+            ortn = noErr;
+        }
+        *dataLength = bytesSent;
+        return ortn;
+        
+#else
 
         assert(data != nullptr);
         assert(len != nullptr);
@@ -155,6 +190,7 @@ namespace ix
                 default: return errSecIO;
             }
         }
+#endif
     }
 
 
@@ -237,20 +273,15 @@ namespace ix
     }
 
     ssize_t SocketAppleSSL::send(char* buf, size_t nbyte)
-    {
-        ssize_t sent = 0;
-
-        while (nbyte > 0)
     {
         std::lock_guard<std::mutex> lock(_mutex);
 
         size_t processed = 0;
-            OSStatus status = SSLWrite(_sslContext, buf + sent, nbyte, &processed);
+        OSStatus status = SSLWrite(_sslContext, buf, nbyte, &processed);
 
         if (status == noErr)
         {
-                nbyte -= processed;
-                sent += processed;
+            return processed;
         }
         else if (status == errSSLWouldBlock)
         {
@@ -262,8 +293,6 @@ namespace ix
             return -1;
         }
     }
-        return sent;
-    }
 
     ssize_t SocketAppleSSL::send(const std::string& buffer)
     {