The port opening and forwarding problem that you mention is a very real one, and there is no easy work around. Applications like uTorrent use UPnP port mapping and / or NAT-PMP to talk to your router automatically and get it to do the relevant port-mappings "on the fly". Not all routers implement these protocols (and in many cases, users might disallow their use for security reasons), so the web is littered with questions on how to do port forwarding for limewire, uTorrent, etc.
Other than reading up on this, I would recommend that you specify your questions in a bit more detail, e.g.:
I was able to send data but most of the time I was not able to send large amounts of data.
this is a bit too vague for us to guess at what the problem is. What size file were you sending, over what connection, did you get errors, or was it just slow, etc?
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您提到的端口开放和转发问题是一个非常现实的问题，并且没有简单的解决方法。 uTorrent 等应用程序使用 UPnP 端口映射 和/或 NAT-PMP 自动与您的路由器对话并让它在“飞”。并非所有路由器都实现这些协议（并且在许多情况下，用户可能出于安全原因不允许使用它们），因此网络上充斥着如何为 Limewire、uTorrent 等进行端口转发的问题。
除了阅读此内容之外，我还建议您更详细地说明您的问题，例如：
这对于我们来说有点太模糊了，无法猜测问题所在。您发送的文件大小是多少，通过什么连接发送的，是否遇到错误，或者只是速度慢等等？
The port opening and forwarding problem that you mention is a very real one, and there is no easy work around. Applications like uTorrent use UPnP port mapping and / or NAT-PMP to talk to your router automatically and get it to do the relevant port-mappings "on the fly". Not all routers implement these protocols (and in many cases, users might disallow their use for security reasons), so the web is littered with questions on how to do port forwarding for limewire, uTorrent, etc.
Other than reading up on this, I would recommend that you specify your questions in a bit more detail, e.g.:
this is a bit too vague for us to guess at what the problem is. What size file were you sending, over what connection, did you get errors, or was it just slow, etc?