具有 Chrome 本机消息传递的 C# 本机主机
C# native host with Chrome Native Messaging
我今天花了几个小时研究如何让 Chrome 本机消息与 C# 本机主机一起工作。从概念上讲,它非常简单,但在这些其他问题的帮助下(部分)我解决了一些问题:
Native Messaging Chrome
Native messaging from chrome extension to native host written in C#
Very Slow to pass "large" amount of data from Chrome Extension to Host (written in C#)
我的解决方案贴在下面。
假设清单设置正确,下面是使用 "port" 方法与 C# 主机对话的完整示例:
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();
}
}
}
如果您不需要主动与房东沟通,使用runtime.sendNativeMessage
即可。要防止主机挂起,只需删除 while
循环并执行一次 Read/Write。
为了测试这一点,我在这里使用了 Google 提供的示例项目:https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/docs/examples/api/nativeMessaging
注意:我使用 Json.NET 来简化 json serialization/de-serialization 过程。
希望对大家有所帮助!
我今天花了几个小时研究如何让 Chrome 本机消息与 C# 本机主机一起工作。从概念上讲,它非常简单,但在这些其他问题的帮助下(部分)我解决了一些问题:
Native Messaging Chrome
Native messaging from chrome extension to native host written in C#
Very Slow to pass "large" amount of data from Chrome Extension to Host (written in C#)
我的解决方案贴在下面。
假设清单设置正确,下面是使用 "port" 方法与 C# 主机对话的完整示例:
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();
}
}
}
如果您不需要主动与房东沟通,使用runtime.sendNativeMessage
即可。要防止主机挂起,只需删除 while
循环并执行一次 Read/Write。
为了测试这一点,我在这里使用了 Google 提供的示例项目:https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/docs/examples/api/nativeMessaging
注意:我使用 Json.NET 来简化 json serialization/de-serialization 过程。
希望对大家有所帮助!