multiplexing

问题 I'm working on a custom implementation on top of perf_event_open syscall. The implementation aims to support various of PERF_TYPE_HARDWARE , PERF_TYPE_SOFTWARE and PERF_TYPE_HW_CACHE events for specific threads on any core . In Intel® 64 and IA-32 Architectures Software Developer’s Manual vol 3B I see the following for my testing CPU (Kaby Lake): To my understanding so far, one can monitor (theoretically) unlimited PERF_TYPE_SOFTWARE events concurrently but limited (without multiplexing) PERF

问题 I'm working on a custom implementation on top of perf_event_open syscall. The implementation aims to support various of PERF_TYPE_HARDWARE , PERF_TYPE_SOFTWARE and PERF_TYPE_HW_CACHE events for specific threads on any core . In Intel® 64 and IA-32 Architectures Software Developer’s Manual vol 3B I see the following for my testing CPU (Kaby Lake): To my understanding so far, one can monitor (theoretically) unlimited PERF_TYPE_SOFTWARE events concurrently but limited (without multiplexing) PERF

问题 I'm currently doing a school project for making http server. This server should be implemented by multiplexing, but socket programming is totally new area for me. So I made simple server to understand better of server but it doesn't work as I intended... int main() { int server_socket, new_socket; struct sockaddr_in server_address, new_address; socklen_t new_len = sizeof(new_address); const char *hello = "HTTP/1.1 200 OK\nContent-Type: text/plain\nContent-Length: 12\n\nHello world!"; //

问题 I'm currently doing a school project for making http server. This server should be implemented by multiplexing, but socket programming is totally new area for me. So I made simple server to understand better of server but it doesn't work as I intended... int main() { int server_socket, new_socket; struct sockaddr_in server_address, new_address; socklen_t new_len = sizeof(new_address); const char *hello = "HTTP/1.1 200 OK\nContent-Type: text/plain\nContent-Length: 12\n\nHello world!"; //

问题 How can I create a client UDP socket in C++ so that it can listen on a port which is being listened to by another application? In other words, how can I apply port multiplexing in C++? 回答1: I want to listen on only one port You can do that with a sniffer. Just ignore the packets from different ports. I might need to stop it from sending out some particular packets, because my program will send it instead of the original application Okay, here I suggest you to discard sniffers, and use a MITM

问题 I'm looking for a HTTP Server Multiplexer because I've only one public IP and I need use two different Web Servers (Tomcat and IIS) on the same port (the 80). So I thought that is possible use a multiplexer to tunnel all traffic for iis.mydomain.com to the internal port of IIS (for example the 81) and tunnel all the traffic for apache.mydomain.com to the internal port of Tomcat (for example 82). I think the multpliplexer must choose the correct tunnel reading the HTTP-Host header. And this

问题 I'm writing a client server application and I'm using poll to multiplex between several client sockets and stdin, where I can insert commands (example: stop the server). I believe the structure (the "logic") of my code is correct, however it's not behaving the way I expect it to: struct pollfd pfd[NSERVER]; //defined as 10 pfd[0].fd = fileno(stdin); pfd[0].events = POLLIN; pfd[1].fd = socktfd; //server bind, listen socket pfd[1].events = POLLIN; struct sockaddr_storage remoteaddr; // client

问题 I'm writing a client server application and I'm using poll to multiplex between several client sockets and stdin, where I can insert commands (example: stop the server). I believe the structure (the "logic") of my code is correct, however it's not behaving the way I expect it to: struct pollfd pfd[NSERVER]; //defined as 10 pfd[0].fd = fileno(stdin); pfd[0].events = POLLIN; pfd[1].fd = socktfd; //server bind, listen socket pfd[1].events = POLLIN; struct sockaddr_storage remoteaddr; // client

问题 Unfortunately, JDK's HttpUrlConnection or UrlConnection do not run asynchronously. So, if HTTP connections hang for any reason, you will end up loosing a thread. Plus, Selector's multiplexing allows for using only a few threads for making a high number of HTTP GET calls. So, I have been developing a code that uses NIO's Selector and makes HTTP GET. So, the core works well except that to fully support HTTP 1.1, I have to support Keep-Alive, chunked-transfer-mode, and several other things that

问题 I'm trying to do something like this. The problem is that i can't build the loop that does that. Here is my code: import parallel import time p=parallel.Parallel() #object to use the parallel port print ("Enter a string of numbers: ") numStr = raw_input() #read line numList=list(numSTr) #converts string to list numlen=len(numList) #the length of the list numBin=[['1','0001'], ['2','0010'], ['4','0100'], ['5','0101'], ['6','0110'], ['7','0111'], ['8','1000'], ['9','1001'], ['3','0011'], ['0',