[游戏开发]Heroku报错 Web process failed to bind to $PORT within 60 seconds of launch

错误描述

如果设置的端口号小于1000就会报错没有权限

2022-03-29T10:23:16.651636+00:00 heroku[web.1]: State changed from crashed to starting
2022-03-29T10:23:28.994173+00:00 heroku[web.1]: Starting process with command `python /code/server3.py`
2022-03-29T10:23:30.091143+00:00 app[web.1]: Traceback (most recent call last):
2022-03-29T10:23:30.091204+00:00 app[web.1]: File "/code/server3.py", line 247, in <module>
2022-03-29T10:23:30.091205+00:00 app[web.1]: serverSocket.bind(("127.0.0.1", serverPort))
2022-03-29T10:23:30.091208+00:00 app[web.1]: PermissionError: [Errno 13] Permission denied
2022-03-29T10:23:30.234919+00:00 heroku[web.1]: Process exited with status 1
2022-03-29T10:23:30.279569+00:00 heroku[web.1]: State changed from starting to crashed

如果将端口号设置为8080，就会导致在60秒内连接不上

2022-03-29T10:53:34.400924+00:00 heroku[web.1]: State changed from crashed to starting
2022-03-29T10:53:49.432473+00:00 heroku[web.1]: Starting process with command `python /code/server3.py`
2022-03-29T10:53:33.432308+00:00 app[api]: Release v9 created by user ***@icloud.com
2022-03-29T10:53:33.432308+00:00 app[api]: Deployed web (350d1bd5740a) by user ***@icloud.com
2022-03-29T10:54:49.500818+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
2022-03-29T10:54:49.587777+00:00 heroku[web.1]: Stopping process with SIGKILL
2022-03-29T10:54:49.800462+00:00 heroku[web.1]: Process exited with status 137

如果动态引用环境变量中的端口号，就会获取失败

2022-03-29T11:12:03.984493+00:00 heroku[web.1]: State changed from crashed to starting
2022-03-29T11:12:19.984320+00:00 heroku[web.1]: Starting process with command `python /code/server3.py`
2022-03-29T11:12:21.706887+00:00 heroku[web.1]: Process exited with status 1
2022-03-29T11:12:21.536737+00:00 app[web.1]: Traceback (most recent call last):
2022-03-29T11:12:21.536756+00:00 app[web.1]: File "/code/server3.py", line 248, in <module>
2022-03-29T11:12:21.536757+00:00 app[web.1]: serverSocket.bind(("0.0.0.0", serverPort))
2022-03-29T11:12:21.536757+00:00 app[web.1]: TypeError: an integer is required (got type NoneType)
2022-03-29T11:12:21.769096+00:00 heroku[web.1]: State changed from starting to crashed

本机地址无论不写
serverSocket.bind(("", serverPort))
还是写127.0.0.1
serverSocket.bind((“127.0.0.1”, serverPort))
还是写0.0.0.0
serverSocket.bind((“0.0.0.0”, serverPort))
都不行

Python项目解决方案

需要动态绑定端口号

Dockerfile中要这样写，传入$POST

#基于的基础镜像
FROM python:3.4

#代码添加到code文件夹
ADD ./pythonProject /code

# 设置code文件夹是工作目录
WORKDIR /code

# 安装支持
#RUN pip install -r requirements.txt

CMD python /code/server3.py $PORT

Python文件书写格式，在server.py中要通过参数获取

serverPort = int(sys.argv[1])

完整结构如下

if __name__ == '__main__':
    serverSocket = socket(AF_INET, SOCK_STREAM)
    serverPort = int(sys.argv[1])
    serverSocket.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
    serverSocket.bind(("", serverPort))

    serverSocket.listen(5)
    print('The server is running')
    # Main web server loop. It simply accepts TCP connections, and get the request processed in seperate threads.
    while True:
        # Set up a new connection from the client
        connectionSocket, addr = serverSocket.accept()
        # Clients timeout after 60 seconds of inactivity and must reconnect.
        connectionSocket.settimeout(600)
        # start new thread to handle incoming request
        _thread.start_new_thread(process, (connectionSocket,))

NodeJs项目解决方案

// production
config.port = process.env.PORT

app.listen(config.port, () => {
  logger.info('Listening on port %d', config.port);
});

或者

.listen(process.env.PORT || 5000)

或者

production: {
    server: {
        host: '0.0.0.0',
        port: process.env.PORT
    }
}