sockets

问题 When using recv() method, sometimes we can't receive as much data as we want, just like using send(). But we can use sendall() to solve the problem of sending data, how about receiving data? Why there is no such recvall() method? 回答1: There is no fundamental reason why such a function could not be provided as part of the standard library. In fact, there has been at least one attempt to add recvall(). Given that it can be easily implemented as a loop around recv() , I don't think that this is

问题 I have a very simple question, but I have not managed to find any answers to it all weekend. I am using the sendto() function and it is returning error code 14: EFAULT. The man pages describe it as: "An invalid user space address was specified for an argument." I was convinced that this was talking about the IP address I was specifying, but now I suspect it may be the memory address of the message buffer that it is referring to - I can't find any clarification on this anywhere, can anyone

问题 Hello, I am trying to set up a UDP connection in Unity3d and it has been giving me some headace the past days: The Unity script I am running is supposed to receive and maybe in the future send UDP messages. Next to Unity I am using Wireshark to track the packets and PacketSender to generate and receive UDP messages. The source of the messages is a PLC which sends a package every second, containing two floats (8 bytes) for testing. The PLC IP is 192.168.0.1 and it is connected directly via

问题 I'm having a little trouble with sockets, when looping I'm not receiving data except for the first loop, it's timing out each time. If I close and reopen the socket each loop though I seem to be getting the data correctly. Any ideas as to why? Example of looping without closing: int socketHandle = socket(AF_INET,SOCK_DGRAM,0); sockaddr_in serverAddr; serverAddr.sin_family = AF_INET; serverAddr.sin_addr.s_addr = inet_addr(/*UDP IP ADDRESS*/); serverAddr.sin_port = htons(/*UDP PORT*/); struct

问题 I'm having a little trouble with sockets, when looping I'm not receiving data except for the first loop, it's timing out each time. If I close and reopen the socket each loop though I seem to be getting the data correctly. Any ideas as to why? Example of looping without closing: int socketHandle = socket(AF_INET,SOCK_DGRAM,0); sockaddr_in serverAddr; serverAddr.sin_family = AF_INET; serverAddr.sin_addr.s_addr = inet_addr(/*UDP IP ADDRESS*/); serverAddr.sin_port = htons(/*UDP PORT*/); struct

问题 I need to write socket in nodejs such as in PHP. In PHP language I do something like the following: $http_request = "POST $path HTTP/1.0\r\n"; $http_request .= "Host: $host\r\n"; $http_request .= "User-Agent: Picatcha/PHP\r\n"; $http_request .= "Content-Length: " . strlen($data) . "\r\n"; $http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n"; $http_request .= "\r\n"; $http_request .= $data; $response = ''; $fs = @fsockopen($host, $port, $errno, $errstr, 10) if (FALSE == $fs)

问题 I have created a Firefox extension and a C# application and I need to send a String to my extension to perform some work I need to send it through an HTTP request like sockets. I have read about nsIServerSocket and having trouble connecting to my C# application Firefox (extension) code: function startServer() { var listener = { onSocketAccepted : function(socket, transport) { input = clientSocket.openInputStream(0, 0, 0); }, onStopListening : function(socket, status){} }; var serverSocket =

问题 I need to write socket in nodejs such as in PHP. In PHP language I do something like the following: $http_request = "POST $path HTTP/1.0\r\n"; $http_request .= "Host: $host\r\n"; $http_request .= "User-Agent: Picatcha/PHP\r\n"; $http_request .= "Content-Length: " . strlen($data) . "\r\n"; $http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n"; $http_request .= "\r\n"; $http_request .= $data; $response = ''; $fs = @fsockopen($host, $port, $errno, $errstr, 10) if (FALSE == $fs)

问题 I have created a Firefox extension and a C# application and I need to send a String to my extension to perform some work I need to send it through an HTTP request like sockets. I have read about nsIServerSocket and having trouble connecting to my C# application Firefox (extension) code: function startServer() { var listener = { onSocketAccepted : function(socket, transport) { input = clientSocket.openInputStream(0, 0, 0); }, onStopListening : function(socket, status){} }; var serverSocket =

问题 I have created a Firefox extension and a C# application and I need to send a String to my extension to perform some work I need to send it through an HTTP request like sockets. I have read about nsIServerSocket and having trouble connecting to my C# application Firefox (extension) code: function startServer() { var listener = { onSocketAccepted : function(socket, transport) { input = clientSocket.openInputStream(0, 0, 0); }, onStopListening : function(socket, status){} }; var serverSocket =