我创建了一个代码，该代码允许我连接到html页面并在其中打印数据，但问题是每次执行代码时，我不得不手动更改此端口s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 80))
s.listen(5)
while True:
conn, addr = s.accept()
print('Got a connection from %s' % str(addr))
request = conn.recv(1024)
request = str(request)
print('Content = %s' % request)
led_on = request.find('/?led=on')
led_off = request.find('/?led=off')
response =""
if led_on == 6:
print('LED ON')
led.value(1)
if led_off == 6:
i2c= I2C ( scl = Pin(5) , sda = Pin(4))
acc = mpu.accel(i2c)
r = accelerometer.get_values()
result.append(r)
if len(result) > 8:
result = result[1:]
# print(str(r))
print('LED OFF')
led.value(0)
response = web_page()
conn.send('HTTP/1.1 200 OK\n')
conn.send('Content-Type: text/html\n')
conn.send('Connection: close\n\n')
conn.sendall(response)
conn.close()
，因为在尝试停止后端口仍在运行的代码（使用中），因此我更改为另一个值以执行我的代码
-- Install configuration: ""
是否有防止这种想法？
答案 0 :(得分：1)
是否有防止这种想法？
在class SuperA<T extends InterfaceA> implements InterfaceA{}
interface InterfaceA{}
interface InterfaceB<T,T2 extends T>{
//T2 can only chain over T1
//but T1 can be anything, this case T1 extends Object, but it can extend any 1 Object + any multiple Interfaces
<T3 extends T2> void foo2(T3 param);
//T3 can chain or be like T and extend over something certain like T2 extends String&InterfaceA
//void foo3(InterfaceB<? super InterfaceA,InterfaceA> example);
//the only time you are allowed to use super is inside methods and only ? can use them(one the left, ie ? super T is allowed but T super ? not), but again this is only chaining
}
class DerivedA<T2 extends SuperA&InterfaceA> extends SuperA implements InterfaceB<SuperA,T2>{
//here you are making sure that T2 is always parent+InterfaceA and in children DerivedAChild extends DerivedA<T2 extends DerivedA&InterfaceA> is always this+InterfaceA
@Override
public <T3 extends T2> void foo2(T3 param) {
}
}
之前，您需要设置以下选项：
.bind()它放宽了内核TCP层执行的一些计时强制，在开发和调试过程中您会发现这很方便。一旦代码稳定并在生产中发布，它重新启动的频率就会减少，因此时间问题就更少了。
使用当前代码，在CTRL / C之后，您应该会在一段时间内看到端口80套接字处于TIME_WAIT状态。在计时器到期之前，任何应用程序都无法监听80。设置套接字选项后，套接字将被快速回收以允许新的应用程序进程监听80。
Warren Young很友善地在What is the meaning of SO_REUSEADDR (setsockopt option) - Linux?
中解释了此TCP设计选择的动机。