今天在Linux环境下写了一个最简单的TCP Client程序,没想到Linux环境下的头文件竟然这么分散,让我这样的菜鸟很是郁闷啊。编译成功的代码如下:
#include <iostream> #include <string.h> #include <sys/socket.h> // Not need! #include <netinet/in.h> // struct sockadd_in, htons() #include <arpa/inet.h> // inet_addr() #include <unistd.h> // close() int main(int argc, char** argv) { if(argc < 2) { std::cout << "Usage: tcpClient [target IP]" << std::endl; return -1; } struct sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_port = htons(6789); sin.sin_addr.s_addr = inet_addr(argv[1]); int cClient = socket(AF_INET, SOCK_STREAM, 0); if(cClient < 0) { std::cout << "socket failure!" << std::endl; return -1; } if(connect(cClient, (struct sockaddr*)&sin, sizeof sin) < 0) { std::cout << "connect failue!" << std::endl; return -1; } char szLine[256]; while(std::cin >> szLine) { if(strcmp(szLine, "exit") == 0) { std::cout << "Bye!" << std::endl; break; } int sLen = send(cClient, szLine, strlen(szLine), 0); if (sLen <= 0) { std::cout << "send error!" << std::endl; break; } sLen = recv(cClient, szLine, sizeof szLine, 0); if(sLen <= 0) { std::cout << "recv error!" << std::endl; return -1; } szLine[sLen] = '