\u672c\u6587\u5b9e\u73b0\u4e00\u4e2a\u57fa\u4e8eTCP\/IP\u7684\u7b80\u5355\u591a\u4eba\u804a\u5929\u5ba4\u7a0b\u5e8f\u3002\u5b83\u5305\u542b\u4e00\u4e2a\u670d\u52a1\u5668\u7aef\u548c\u4e00\u4e2a\u5ba2\u6237\u7aef：\u670d\u52a1\u5668\u80fd\u591f\u63a5\u6536\u591a\u4e2a\u5ba2\u6237\u7aef\u7684\u8fde\u63a5，\u5e76\u5c06\u4efb\u4f55\u4e00\u4e2a\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u6d88\u606f\u5e7f\u64ad\u7ed9\u6240\u6709\u5176\u4ed6\u8fde\u63a5\u7684\u5ba2\u6237\u7aef；\u5ba2\u6237\u7aef\u5219\u53ef\u4ee5\u8fde\u63a5\u5230\u670d\u52a1\u5668，\u53d1\u9001\u6d88\u606f\u5e76\u63a5\u6536\u6765\u81ea\u5176\u4ed6\u4eba\u7684\u6d88\u606f\u3002\u8be5Demo\u8fd0\u7528\u4e86\u7f51\u7edc\u7f16\u7a0b（Socket API）\u3001\u591a\u7ebf\u7a0b（Pthreads）\u4ee5\u53ca\u7ebf\u7a0b\u540c\u6b65（\u4e92\u65a5\u9501）\u6280\u672f，\u4ee5\u5b9e\u73b0\u5e76\u53d1\u5904\u7406\u548c\u6570\u636e\u5171\u4eab\u5b89\u5168\u3002<\/p>\n
\u7f51\u7edc\u7f16\u7a0b(Sockets)<\/p>\n
\u591a\u7ebf\u7a0b (Pthreads)<\/p>\n
\u7ebf\u7a0b\u540c\u6b65 (Mutex)<\/p>\n
\u00a0\u5177\u4f53\u4ee3\u7801\u5982\u4e0b：<\/p>\n
\/\/ \u7f51\u7edc\u7f16\u7a0b+\u591a\u7ebf\u7a0b+\u7ebf\u7a0b\u540c\u6b65\u5b9e\u73b0\u7684\u804a\u5929\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef<\/p>\n
#include <stdio.h>
\n#include <stdlib.h>
\n#include <unistd.h>
\n#include <string.h>
\n#include <arpa\/inet.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <pthread.h><\/p>\n
#define BUF_SIZE 100 \/\/ \u5b9a\u4e49\u7f13\u51b2\u533a\u5927\u5c0f
\n#define MAX_CLNT 256 \/\/ \u6700\u5927\u5ba2\u6237\u7aef\u6570\u91cf<\/p>\n
\/\/ \u51fd\u6570\u58f0\u660e
\nvoid * handle_clnt(void * arg); \/\/ \u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u7ebf\u7a0b\u51fd\u6570
\nvoid send_msg(char * msg, int len); \/\/ \u5411\u6240\u6709\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f
\nvoid error_handling(char * msg); \/\/ \u9519\u8bef\u5904\u7406\u51fd\u6570<\/p>\n
int clnt_cnt = 0; \/\/ \u5f53\u524d\u5ba2\u6237\u7aef\u8fde\u63a5\u6570\u91cf
\nint clnt_socks[MAX_CLNT]; \/\/ \u5b58\u50a8\u6240\u6709\u5ba2\u6237\u7aef\u7684socket\u63cf\u8ff0\u7b26
\npthread_mutex_t mutx; \/\/ \u4e92\u65a5\u9501，\u7528\u4e8e\u540c\u6b65\u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u8bbf\u95ee（\u5ba2\u6237\u7aef\u6570\u7ec4）<\/p>\n
int main(int argc, char *argv[])
\n{
\n int serv_sock, clnt_sock; \/\/ \u670d\u52a1\u7aefsocket\u548c\u5ba2\u6237\u7aefsocket
\n struct sockaddr_in serv_adr, clnt_adr; \/\/ \u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u5730\u5740
\n int clnt_adr_sz; \/\/ \u5ba2\u6237\u7aef\u5730\u5740\u7ed3\u6784\u7684\u5927\u5c0f
\n pthread_t t_id; \/\/ \u7ebf\u7a0bID<\/p>\n
if(argc != 2) {
\n printf("Usage : %s <port>\\\\n", argv[0]); \/\/ \u68c0\u67e5\u8f93\u5165\u7684\u7aef\u53e3\u53f7\u53c2\u6570
\n exit(1);
\n }<\/p>\n
pthread_mutex_init(&mutx, NULL); \/\/ \u521d\u59cb\u5316\u4e92\u65a5\u9501<\/p>\n
serv_sock = socket(PF_INET, SOCK_STREAM, 0); \/\/ \u521b\u5efa\u670d\u52a1\u7aefsocket
\n if(serv_sock == -1) {
\n error_handling("socket() error");
\n }<\/p>\n
memset(&serv_adr, 0, sizeof(serv_adr)); \/\/ \u521d\u59cb\u5316\u670d\u52a1\u7aef\u5730\u5740\u7ed3\u6784
\n serv_adr.sin_family = AF_INET;
\n serv_adr.sin_addr.s_addr = htonl(INADDR_ANY); \/\/ \u7ed1\u5b9a\u5230\u6240\u6709\u53ef\u7528\u63a5\u53e3
\n serv_adr.sin_port = htons(atoi(argv[1])); \/\/ \u4f7f\u7528\u547d\u4ee4\u884c\u63d0\u4f9b\u7684\u7aef\u53e3\u53f7<\/p>\n
if(bind(serv_sock, (struct sockaddr*)&serv_adr, sizeof(serv_adr)) == -1) \/\/ \u7ed1\u5b9a\u670d\u52a1\u7aefsocket
\n error_handling("bind() error");
\n if(listen(serv_sock, 5) == -1) \/\/ \u5f00\u59cb\u76d1\u542c
\n error_handling("listen() error");<\/p>\n
while(1)
\n {
\n clnt_adr_sz = sizeof(clnt_adr); \/\/ \u83b7\u53d6\u5ba2\u6237\u7aef\u5730\u5740\u5927\u5c0f
\n clnt_sock = accept(serv_sock, (struct sockaddr*)&clnt_adr, &clnt_adr_sz); \/\/ \u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5<\/p>\n
\/\/ \u6dfb\u52a0\u65b0\u7684\u5ba2\u6237\u7aefsocket\u5230\u6570\u7ec4
\n pthread_mutex_lock(&mutx); \/\/ \u83b7\u53d6\u4e92\u65a5\u9501，\u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168
\n clnt_socks[clnt_cnt++] = clnt_sock; \/\/ \u589e\u52a0\u5ba2\u6237\u7aef\u5230\u5ba2\u6237\u7aef\u6570\u7ec4
\n pthread_mutex_unlock(&mutx); \/\/ \u91ca\u653e\u4e92\u65a5\u9501<\/p>\n
\/\/ \u521b\u5efa\u65b0\u7ebf\u7a0b\u6765\u5904\u7406\u5ba2\u6237\u7aef
\n pthread_create(&t_id, NULL, handle_clnt, (void*)&clnt_sock);
\n pthread_detach(t_id); \/\/ \u5c06\u7ebf\u7a0b\u5206\u79bb，\u907f\u514d\u4e3b\u7ebf\u7a0b\u7b49\u5f85
\n printf("Connected client IP: %s \\\\n", inet_ntoa(clnt_adr.sin_addr)); \/\/ \u8f93\u51fa\u5ba2\u6237\u7aefIP\u5730\u5740
\n }<\/p>\n
close(serv_sock); \/\/ \u5173\u95ed\u670d\u52a1\u7aefsocket
\n return 0;<\/p>\n
}<\/p>\n
\/\/ \u5904\u7406\u5ba2\u6237\u7aef\u7684\u51fd\u6570
\nvoid * handle_clnt(void * arg)
\n{
\n int clnt_sock = *((int*)arg); \/\/ \u83b7\u53d6\u5ba2\u6237\u7aefsocket
\n int str_len = 0, i;
\n char msg[BUF_SIZE]; \/\/ \u7f13\u51b2\u533a<\/p>\n
while((str_len = read(clnt_sock, msg, sizeof(msg))) != 0) \/\/ \u8bfb\u53d6\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6d88\u606f
\n send_msg(msg, str_len); \/\/ \u5c06\u6d88\u606f\u8f6c\u53d1\u7ed9\u6240\u6709\u5ba2\u6237\u7aef<\/p>\n
\/\/ \u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5\u540e，\u79fb\u9664\u5ba2\u6237\u7aef
\n pthread_mutex_lock(&mutx); \/\/ \u83b7\u53d6\u4e92\u65a5\u9501
\n for(i = 0; i < clnt_cnt; i++) \/\/ \u67e5\u627e\u5e76\u79fb\u9664\u65ad\u5f00\u7684\u5ba2\u6237\u7aef
\n {
\n if(clnt_sock == clnt_socks[i])
\n {
\n while(i++ < clnt_cnt – 1) \/\/ \u5c06\u540e\u7eed\u5ba2\u6237\u7aef\u524d\u79fb
\n clnt_socks[i] = clnt_socks[i + 1];
\n break;
\n }
\n }
\n clnt_cnt–; \/\/ \u5ba2\u6237\u7aef\u6570\u91cf\u51cf\u4e00
\n pthread_mutex_unlock(&mutx); \/\/ \u91ca\u653e\u4e92\u65a5\u9501<\/p>\n
close(clnt_sock); \/\/ \u5173\u95ed\u5ba2\u6237\u7aefsocket
\n return NULL;<\/p>\n
}<\/p>\n
\/\/ \u5411\u6240\u6709\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f
\nvoid send_msg(char * msg, int len)
\n{
\n int i;
\n pthread_mutex_lock(&mutx); \/\/ \u83b7\u53d6\u4e92\u65a5\u9501，\u4fdd\u62a4\u5171\u4eab\u8d44\u6e90（\u5ba2\u6237\u7aefsocket\u6570\u7ec4）
\n for(i = 0; i < clnt_cnt; i++) \/\/ \u5411\u6240\u6709\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f
\n write(clnt_socks[i], msg, len);
\n pthread_mutex_unlock(&mutx); \/\/ \u91ca\u653e\u4e92\u65a5\u9501
\n}<\/p>\n
\/\/ \u9519\u8bef\u5904\u7406\u51fd\u6570
\nvoid error_handling(char * msg)
\n{
\n fputs(msg, stderr); \/\/ \u8f93\u51fa\u9519\u8bef\u4fe1\u606f
\n fputc('\\\\n', stderr);
\n exit(1); \/\/ \u9000\u51fa\u7a0b\u5e8f
\n} <\/p>\n
\/\/ \u5ba2\u6237\u7aef\u7a0b\u5e8f：\u7f51\u7edc\u7f16\u7a0b+\u591a\u7ebf\u7a0b\u5b9e\u73b0\u7684\u804a\u5929\u5ba2\u6237\u7aef<\/p>\n
#include <stdio.h>
\n#include <stdlib.h>
\n#include <unistd.h>
\n#include <string.h>
\n#include <arpa\/inet.h>
\n#include <sys\/socket.h>
\n#include <pthread.h><\/p>\n
#define BUF_SIZE 100 \/\/ \u5b9a\u4e49\u6d88\u606f\u7684\u6700\u5927\u957f\u5ea6
\n#define NAME_SIZE 20 \/\/ \u5b9a\u4e49\u7528\u6237\u540d\u7684\u6700\u5927\u957f\u5ea6<\/p>\n
\/\/ \u51fd\u6570\u58f0\u660e
\nvoid * send_msg(void * arg); \/\/ \u53d1\u9001\u6d88\u606f\u7684\u7ebf\u7a0b\u51fd\u6570
\nvoid * recv_msg(void * arg); \/\/ \u63a5\u6536\u6d88\u606f\u7684\u7ebf\u7a0b\u51fd\u6570
\nvoid error_handling(char * msg); \/\/ \u9519\u8bef\u5904\u7406\u51fd\u6570<\/p>\n
\/\/ \u7528\u6237\u540d\u548c\u6d88\u606f\u7f13\u51b2\u533a
\nchar name[NAME_SIZE] = "[DEFAULT]"; \/\/ \u9ed8\u8ba4\u7528\u6237\u540d
\nchar msg[BUF_SIZE]; \/\/ \u7528\u4e8e\u5b58\u50a8\u7528\u6237\u8f93\u5165\u7684\u6d88\u606f<\/p>\n
int main(int argc, char *argv[])
\n{
\n int sock;
\n struct sockaddr_in serv_addr; \/\/ \u670d\u52a1\u5668\u5730\u5740\u7ed3\u6784
\n pthread_t snd_thread, rcv_thread; \/\/ \u53d1\u9001\u548c\u63a5\u6536\u6d88\u606f\u7684\u7ebf\u7a0b
\n void * thread_return;<\/p>\n
\/\/ \u68c0\u67e5\u547d\u4ee4\u884c\u53c2\u6570，\u786e\u4fdd\u63d0\u4f9b\u4e86 IP\u3001\u7aef\u53e3\u548c\u7528\u6237\u540d
\n if(argc != 4) {
\n printf("Usage : %s <IP> <port> <name>\\\\n", argv[0]);
\n exit(1);
\n }<\/p>\n
\/\/ \u8bbe\u7f6e\u5ba2\u6237\u7aef\u7528\u6237\u540d
\n sprintf(name, "[%s]", argv[3]);<\/p>\n
\/\/ \u521b\u5efa\u5ba2\u6237\u7aefsocket
\n sock = socket(PF_INET, SOCK_STREAM, 0);<\/p>\n
\/\/ \u521d\u59cb\u5316\u670d\u52a1\u5668\u5730\u5740\u7ed3\u6784
\n memset(&serv_addr, 0, sizeof(serv_addr));
\n serv_addr.sin_family = AF_INET;
\n serv_addr.sin_addr.s_addr = inet_addr(argv[1]); \/\/ \u83b7\u53d6\u670d\u52a1\u5668\u7684IP\u5730\u5740
\n serv_addr.sin_port = htons(atoi(argv[2])); \/\/ \u83b7\u53d6\u670d\u52a1\u5668\u7684\u7aef\u53e3\u53f7<\/p>\n
\/\/ \u8fde\u63a5\u5230\u670d\u52a1\u5668
\n if(connect(sock, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) == -1)
\n error_handling("connect() error");<\/p>\n
\/\/ \u521b\u5efa\u53d1\u9001\u548c\u63a5\u6536\u6d88\u606f\u7684\u7ebf\u7a0b
\n pthread_create(&snd_thread, NULL, send_msg, (void*)&sock);
\n pthread_create(&rcv_thread, NULL, recv_msg, (void*)&sock);<\/p>\n
\/\/ \u7b49\u5f85\u4e24\u4e2a\u7ebf\u7a0b\u7ed3\u675f
\n pthread_join(snd_thread, &thread_return);
\n pthread_join(rcv_thread, &thread_return);<\/p>\n
close(sock); \/\/ \u5173\u95ed\u5ba2\u6237\u7aefsocket
\n return 0;<\/p>\n
}<\/p>\n
\/\/ \u53d1\u9001\u6d88\u606f\u7684\u7ebf\u7a0b\u51fd\u6570
\nvoid * send_msg(void * arg)
\n{
\n int sock = *((int*)arg); \/\/ \u83b7\u53d6\u5ba2\u6237\u7aefsocket
\n char name_msg[NAME_SIZE + BUF_SIZE]; \/\/ \u7528\u4e8e\u5b58\u50a8\u5e26\u6709\u7528\u6237\u540d\u7684\u6d88\u606f<\/p>\n
while(1)
\n {
\n fgets(msg, BUF_SIZE, stdin); \/\/ \u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u6d88\u606f<\/p>\n
\/\/ \u5982\u679c\u8f93\u5165\u4e3a "q" \u6216 "Q"，\u5219\u9000\u51fa\u7a0b\u5e8f
\n if(!strcmp(msg, "q\\\\n") || !strcmp(msg, "Q\\\\n"))
\n {
\n close(sock); \/\/ \u5173\u95edsocket\u8fde\u63a5
\n exit(0); \/\/ \u9000\u51fa\u7a0b\u5e8f
\n }<\/p>\n
\/\/ \u5c06\u7528\u6237\u540d\u548c\u6d88\u606f\u5408\u5e76\u6210\u4e00\u4e2a\u5b57\u7b26\u4e32
\n sprintf(name_msg, "%s %s", name, msg);<\/p>\n
\/\/ \u53d1\u9001\u5408\u5e76\u540e\u7684\u6d88\u606f\u5230\u670d\u52a1\u5668
\n write(sock, name_msg, strlen(name_msg));
\n }
\n return NULL; \/\/ \u8fd4\u56de\u7a7a\u503c<\/p>\n
}<\/p>\n
\/\/ \u63a5\u6536\u6d88\u606f\u7684\u7ebf\u7a0b\u51fd\u6570
\nvoid * recv_msg(void * arg)
\n{
\n int sock = *((int*)arg); \/\/ \u83b7\u53d6\u5ba2\u6237\u7aefsocket
\n char name_msg[NAME_SIZE + BUF_SIZE]; \/\/ \u7528\u4e8e\u5b58\u50a8\u5e26\u6709\u7528\u6237\u540d\u7684\u6d88\u606f
\n int str_len;<\/p>\n
while(1)
\n {
\n \/\/ \u4ece\u670d\u52a1\u5668\u8bfb\u53d6\u6d88\u606f
\n str_len = read(sock, name_msg, NAME_SIZE + BUF_SIZE – 1);<\/p>\n
if(str_len == -1) \/\/ \u5982\u679c\u8bfb\u53d6\u5931\u8d25，\u8fd4\u56de\u9519\u8bef
\n return (void*)-1;<\/p>\n
name_msg[str_len] = 0; \/\/ \u5c06\u8bfb\u53d6\u7684\u5b57\u7b26\u4e32\u4ee5 null \u7ed3\u5c3e
\n fputs(name_msg, stdout); \/\/ \u8f93\u51fa\u670d\u52a1\u5668\u53d1\u6765\u7684\u6d88\u606f
\n }
\n return NULL; \/\/ \u8fd4\u56de\u7a7a\u503c<\/p>\n
}<\/p>\n
\/\/ \u9519\u8bef\u5904\u7406\u51fd\u6570
\nvoid error_handling(char *msg)
\n{
\n fputs(msg, stderr); \/\/ \u5c06\u9519\u8bef\u6d88\u606f\u8f93\u51fa\u5230\u6807\u51c6\u9519\u8bef
\n fputc('\\\\n', stderr); \/\/ \u8f93\u51fa\u6362\u884c\u7b26
\n exit(1); \/\/ \u9000\u51fa\u7a0b\u5e8f
\n} <\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.5k\u6b21\uff0c\u70b9\u8d5e21\u6b21\uff0c\u6536\u85cf9\u6b21\u3002\u5b9e\u73b0\u4e00\u4e2a\u57fa\u4e8eTCP\/IP\u7684\u7b80\u5355\u591a\u4eba\u804a\u5929\u5ba4\u7a0b\u5e8f\u3002\u5b83\u5305\u542b\u4e00\u4e2a\u670d\u52a1\u5668\u7aef\u548c\u4e00\u4e2a\u5ba2\u6237\u7aef\uff1a\u670d\u52a1\u5668\u80fd\u591f\u63a5\u6536\u591a\u4e2a\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\uff0c\u5e76\u5c06\u4efb\u4f55\u4e00\u4e2a\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u6d88\u606f\u5e7f\u64ad\u7ed9\u6240\u6709\u5176\u4ed6\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\uff1b\u5ba2\u6237\u7aef\u5219\u53ef\u4ee5\u8fde\u63a5\u5230\u670d\u52a1\u5668\uff0c\u53d1\u9001\u6d88\u606f\u5e76\u63a5\u6536\u6765\u81ea\u5176\u4ed6\u4eba\u7684\u6d88\u606f\u3002\u8be5Demo\u8fd0\u7528\u4e86\u7f51\u7edc\u7f16\u7a0b\uff08Socket API\uff09\u3001\u591a\u7ebf\u7a0b\uff08Pthreads\uff09\u4ee5\u53ca\u7ebf\u7a0b\u540c\u6b65\uff08\u4e92\u65a5\u9501\uff09\u6280\u672f\uff0c\u4ee5\u5b9e\u73b0\u5e76\u53d1\u5904\u7406\u548c\u6570\u636e\u5171\u4eab\u5b89\u5168\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43],"topic":[],"class_list":["post-38873","post","type-post","status-publish","format-standard","hentry","category-server","tag-linux","tag-43"],"yoast_head":"\n