如何在 Chrome 中通过 nativeMessaging send/receive 发短信？

Question

我正在尝试将当前活动选项卡的 url 发送到 python 脚本。我的扩展程序已经启动运行脚本并尝试发送 url。然而，到目前为止，我一直没有成功地使用运行脚本接收 url。

popup.js:

dlvideo.addEventListener("click", async () => {
    chrome.tabs.query({active: true, lastFocusedWindow: true}, tabs => {
        // Get current url
        url = tabs[0].url;
        
        // Connect to python script
        port = chrome.runtime.connectNative('com.ytdlp.batdlvideo');
        port.onDisconnect.addListener(function() {
            console.log("Disconnected");
        });
        port.onMessage.addListener(function(msg) {
            console.log("Received" + msg);
        });

        // Send url to script
        port.postMessage({ text: url });
    });
});

dlvideo.py（代码似乎在 while 循环开始时卡在此处）：

import sys

if sys.platform == "win32":
    import os, msvcrt
    msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
    msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)

url = None
while True:
    # The loop seems to get stuck here:
    text_length_bytes = sys.stdin.read(4)

    if len(text_length_bytes) == 0:
        print("test.py: sys.exit0")
        sys.exit(0)
        
    text_length = struct.unpack('i', text_length_bytes)[0]
    text = sys.stdin.read(text_length).decode('utf-8')
    if text.startswith('http'):
        url = text
        print(str(url))
        break
    else:
        print(text)

其他文件可能不相关，但我将它们放在这里以防万一： yt_dlp.bat:

@echo off
start cmd /k python "%~dp0/dlvideo.py" %*

manifestAPP.json:

{
    "name": "com.ytdlp.batdlvideo",
    "description": "Youtube-dlp",
    "path": "C:\Users\.....\native-apps\dlvideo\yt_dlp.bat",
    "type": "stdio",
    "allowed_origins": [
        "chrome-extension://-extensionid-/"
    ]
}

有人可以帮忙吗？

Answer 1

好的，我想我的问题是只向主机发送了一条消息，而主机在发送时尚未准备好？

好吧，这至少是对我有用的代码：

popup.js 和 manifestAPP.json 可以保持不变。

dlvideo.py:

import struct
import json
import sys
import os

# Changes the stdio-mode
if sys.platform == "win32":
    import os, msvcrt
    msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
    msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)

# Read native message from chrome window
text_message_length = sys.stdin.buffer.read(4)
text_length = struct.unpack("i", text_message_length)[0]
text_decoded = sys.stdin.buffer.read(text_length).decode("utf-8")
text_asstr = json.loads(text_decoded)

# Get URL
url = text_asstr['text']

yt_dlp.bat:

@echo off
python dlvideo.py %*

如何在 Chrome 中通过 nativeMessaging send/receive 发短信？

How to send/receive text message via nativeMessaging in Chrome?

javascript

python

batch-file

google-chrome-extension

chrome-native-messaging