socket o nonblock

the semantics of Read/write: Why is it blocked. Let me start with write: #include ssize_t Write (int fd, const void *buf, size_t count); First, write returns successfully, except that the data in the BUF is replicated to the TCP send buffer in

I think that to master the TCP/IP network programming under Linux, at least three levels of knowledge need to be familiar: 1. TCP/IP protocol (e.g. connection establishment and termination, retransmission and acknowledgement, sliding window

I think that to master the TCP/IP network programming under Linux, at least three levels of knowledge need to be familiar: Tcp/ip protocol (such as connection establishment and termination, retransmission and validation, sliding window and

Analysis of High-performance I/O models Analysis of High-performance IO Models   High-performance I/O models are often required for Server programming. There are four common I/O models: (1) Synchronous Blocking I/O (Blocking IO): the traditional

1.I/O Basic Knowledge 1.1What is a file descriptor? In a network, a socket object is a 1 file descriptor, and in a file, 1 file handles (that is, the files object) are 1 file descriptors. In fact, it can be understood as a "pointer" or "handle",

I think that to master the TCP/IP network programming under Linux, at least three levels of knowledge need to be familiar: 1. TCP/IP protocol (e.g. connection establishment and termination, retransmission and acknowledgement, sliding window

This article forwards from the technical World , the original link http://www.jasongj.com/java/nio_reactor/Synchronous vs. asynchronousSynchronous I/O　Each request must be processed individually, and the processing of a request causes a temporary

Note: Only when epoll et (edge trigger) mode is used, you need to check whether the data has been read. When the select or epoll mode is used, you do not have to worry about whether the data has been read. If select/epoll detects that the data is

# Include # Include # Include # Pragma comment (Lib, "ws2_32.lib ") Bool insertsock (socket * psock, socket sock){For (INT nindex = 0; nindex {If (psock [nindex] = invalid_socket){Psock [nindex] = sock;Break;}} If (nindex = fd_setsize-1)Return false;

I. Understanding of UNIX Network Programming 5 I/O models 1.1, blocking I/O modelsBlocking I/O (blocking I/O) model, the process calls Recvfrom, whose system calls are not returned until the datagram arrives and is copied into the buffer of the