Fix a bug with SSL on linux (#43)

Author: an-tao

trantor/net/inner/TcpConnectionImpl.cc

@@ -693,13 +693,18 @@ void TcpConnectionImpl::sendFileInLoop(const BufferNodePtr &filePtr)
     }
 #endif
     lseek(filePtr->_sendFd, filePtr->_offset, SEEK_SET);
+    if (!_fileBufferPtr)
+    {
+        _fileBufferPtr = std::make_unique<std::vector<char>>(16 * 1024);
+    }
     while (filePtr->_fileBytesToSend > 0)
     {
-        std::vector<char> buf(1024 * 1024);
-        auto n = read(filePtr->_sendFd, &buf[0], buf.size());
+        auto n = read(filePtr->_sendFd,
+                      &(*_fileBufferPtr)[0],
+                      _fileBufferPtr->size());
         if (n > 0)
         {
-            auto nSend = writeInLoop(&buf[0], n);
+            auto nSend = writeInLoop(&(*_fileBufferPtr)[0], n);
             if (nSend >= 0)
             {
                 filePtr->_fileBytesToSend -= nSend;

trantor/net/inner/TcpConnectionImpl.h

@@ -231,6 +231,8 @@ class TcpConnectionImpl : public TcpConnection,
 
     size_t _bytesSent = 0;
     size_t _bytesReceived = 0;
+
+    std::unique_ptr<std::vector<char>> _fileBufferPtr;
 };
 
 typedef std::shared_ptr<TcpConnectionImpl> TcpConnectionImplPtr;

trantor/net/ssl/SSLConnection.cc

@@ -262,13 +262,15 @@ ssize_t SSLConnection::writeInLoop(const char *buffer, size_t length)
     }
 
     // send directly
+    ERR_clear_error();
     auto sendLen = SSL_write(_sslPtr->get(), buffer, length);
     if (sendLen <= 0)
     {
         int sslerr = SSL_get_error(_sslPtr->get(), sendLen);
         if (sslerr != SSL_ERROR_WANT_WRITE && sslerr != SSL_ERROR_WANT_READ)
         {
             LOG_ERROR << "ssl write error:" << sslerr;
+            forceClose();
             return -1;
         }
         return 0;