port

问题 I want to send some serial values to my PC. Arduino with sensors (master) >> via Bluetooth >> Arduino (slave) >> via serial com port >> PC with C# app Serial transmission works well from master to slave, but how can I receive and convert the values received to floats on the PC side using C#? Slave code is: Struct definition typedef struct { char bt1; float bt2; float bt3; float bt4; float bt5; float bt6; float bt7; char bt8; } PayloadBT; PayloadBT payloadBT; Struct sent to pc BT_writeAnything

问题 I am getting following error when I test mysql port 3306: ***** Test which uses port 3306 ***** ===== Tested by command netstat filtered on port 3306 ===== Port 3306 is not found associated with TCP protocol Port 3306 is not found associated with TCP protocol --- Do you want to copy the results into Clipboard? --- Type 'y' to confirm - Press ENTER to continue... I've tried many methods but it could not work. Apache is working fine but MySQL service is not able to start. Wamp icon is orange

问题 I'm using HAProxy 1.6.4 and want to enable the stats. (/haproxy?stats) Here is my cfg: global log 127.0.0.1 local2 daemon maxconn 256 defaults log global timeout connect 5000 timeout client 10000 timeout server 10000 frontend http-in bind *:8080 default_backend testb backend testb balance roundrobin server s1 123.456.789.0:443 maxconn 32 server s2 123.456.789.1:443 maxconn 32 listen statistics bind *:8080 mode http stats enable If I run statistics on other port than 8080 it works, but how can

问题 I am trying to check if a specific port is being used in C++. I am not trying to have the C++ program listen on that port for any reason, just check to see if it is being used. There will be another program listening on that port, and if it stops, I want my program to do something. So, it will check every 10 seconds or so, and if the port is in use, it will do nothing, but if the port becomes available, something will happen. I've been looking at the boost ASIO library, but I can't seem to

问题 I am trying to check if a specific port is being used in C++. I am not trying to have the C++ program listen on that port for any reason, just check to see if it is being used. There will be another program listening on that port, and if it stops, I want my program to do something. So, it will check every 10 seconds or so, and if the port is in use, it will do nothing, but if the port becomes available, something will happen. I've been looking at the boost ASIO library, but I can't seem to

问题 Given an IP Address and port number, is it possible to check if the machine with that IP address has Postgresql listening on the specified port? If so, how? I just want to obtain a boolean value of whether Postgresql is listening on the specified port of the specified machine. 回答1: I think you need to define what you're trying to achieve better. Do you just want to know if anything is listening on a certain point? If PostgreSQL is listening on a given port? If PostgreSQL is running and

问题 When creating a peer to peer audio connection using webRTC, the STUN server we use will return the public IP if a user is behind a router. Now in the ICE objects, I can see that the rport is always something between 50000 and up. Is there a way to use a specific port so that the user does not have to open all those ports? 回答1: Is there a way to use a specific port so that the user does not have to open all those ports? I think you have a misunderstanding. The whole point of STUN and ICE

问题 I am running FILE-Zilla ftp server on windows in one of the LAN pc connect to my router. i am trying to access the FTP server from the network outside of the router using Router WAN ip (WAN-to-LAN) by adding Port-Forwarding rule (NAT) in the router. I have 2 cases here as per below configurations. the 1st is working and the 2nd is not (in Passive mode). Note: i have added the custom inbound rule in the windows 7 firewall where the ftp server is running. Configuration #1 Filezilla FTP server

问题 I have a Python script that creates many short-lived, simultaneous connections using the requests library. I specifically need to find out the source port used by each connection and I figure I need access to the underlying socket for that. Is there a way to get this through the response object? 回答1: For streaming connections (those opened with the stream=True parameter), you can call the .raw.fileno() method on the response object to get an open file descriptor. You can use the socket.fromfd