proxy

@@ -93,7 +93,35 @@ class ImapClient {
         if($this->debug){
             echo 'write: '.$cmd;
         }
-        return fwrite($this->socket,$cmd);
+
+        $totalBytes = strlen($cmd);
+        $bytesWritten = 0;
+        $maxW = 50;
+        while ($bytesWritten < $totalBytes) {
+            $result = fwrite($this->socket, substr($cmd, $bytesWritten));
+            // 写失败了
+            if ($result === false) {    return false;   }
+
+            // 更新已写入的字节数
+            $bytesWritten += $result;
+
+            // 如果没有写入任何字节，可能是缓冲区满了，稍后再试
+            if ($result === 0) {
+                $maxW--;
+                if(!$maxW){
+                    throw new \Exception('socket write error time out');
+                }
+                // 兼容下swoole
+                if(function_exists('go') && \co::getCid()>0){
+                    \co::sleep(0.1);
+                }else{
+                    // 等待 100 毫秒
+                    usleep(100000);
+                }
+            }
+        }
+
+        return $bytesWritten;
     }
 
     /**