C#本地主机与Chrome的Native消息 [英] C# native host with Chrome Native Messaging
问题描述
今天我花了几个小时研究如何让Chrome原始消息用C#本地主机的工作。从概念上讲这是很简单,但也有我的帮助(部分),从这些其他问题解决的几个碰壁:
I spent a few hours today researching how to get Chrome native messaging working with a C# native host. Conceptually it was quite simple, but there were a few snags that I resolved with help (in part) from these other questions:
本地消息Chrome浏览器结果
<一href=\"http://stackoverflow.com/questions/27643892/native-messaging-from-chrome-extension-to-native-host-written-in-c-sharp\">Native从Chrome扩展消息传递在C#编写结果天然宿主
<一href=\"http://stackoverflow.com/questions/27653624/very-slow-to-pass-large-amount-of-data-from-chrome-extension-to-host-written\">Very慢速通过&QUOT;大&QUOT;到主机(用C#编写)的Chrome扩展的数据量
我的解决方案张贴在下面。
My solution is posted below.
推荐答案
假设清单设置正确,这里是使用端口的方法说给C#主机完整的例子:
Assuming the manifest is set up properly, here is a complete example for talking to a C# host using the "port" method:
using System;
using System.IO;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
namespace NativeMessagingHost
{
class Program
{
public static void Main(string[] args)
{
JObject data;
while ((data = Read()) != null)
{
var processed = ProcessMessage(data);
Write(processed);
if (processed == "exit")
{
return;
}
}
}
public static string ProcessMessage(JObject data)
{
var message = data["text"].Value<string>();
switch (message)
{
case "test":
return "testing!";
case "exit":
return "exit";
default:
return "echo: " + message;
}
}
public static JObject Read()
{
var stdin = Console.OpenStandardInput();
var length = 0;
var lengthBytes = new byte[4];
stdin.Read(lengthBytes, 0, 4);
length = BitConverter.ToInt32(lengthBytes, 0);
var buffer = new char[length];
using (var reader = new StreamReader(stdin))
{
while (reader.Peek() >= 0)
{
reader.Read(buffer, 0, buffer.Length);
}
}
return (JObject)JsonConvert.DeserializeObject<JObject>(new string(buffer));
}
public static void Write(JToken data)
{
var json = new JObject();
json["data"] = data;
var bytes = System.Text.Encoding.UTF8.GetBytes(json.ToString(Formatting.None));
var stdout = Console.OpenStandardOutput();
stdout.WriteByte((byte)((bytes.Length >> 0) & 0xFF));
stdout.WriteByte((byte)((bytes.Length >> 8) & 0xFF));
stdout.WriteByte((byte)((bytes.Length >> 16) & 0xFF));
stdout.WriteByte((byte)((bytes.Length >> 24) & 0xFF));
stdout.Write(bytes, 0, bytes.Length);
stdout.Flush();
}
}
}
如果你并不需要主动与主机通信,使用 runtime.sendNativeMessage
将正常工作。以prevent从悬挂主机,只需删除,而
循环和不读/写一次。
If you don't need to actively communicate with the host, using runtime.sendNativeMessage
will work fine. To prevent the host from hanging, simply remove the while
loop and do Read/Write once.
要测试这一点,我使用由谷歌此处提供的示例项目:<一href=\"https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/docs/examples/api/nativeMessaging\">https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/docs/examples/api/nativeMessaging
To test this, I used the example project provided by Google here: https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/docs/examples/api/nativeMessaging
请注意:我使用Json.NET简化JSON序列化/反序列化进程
Note: I'm using Json.NET to simplify the json serialization/de-serialization process.
我希望这是有帮助的人!
I hope this is helpful to somebody!
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