![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418173707-68028dc3d7355.png\")
<\/p>\n\u00a0 \u00a0 \u00a0 \u00a0 \u7f51\u7edc\u7f16\u7a0b\u662f\u57fa\u7840\u4e2d\u7684\u6838\u5fc3，\u957f\u65f6\u95f4\u4e0d\u7528\u5c31\u4f1a\u5fd8\u4e86，\u62bd\u65f6\u95f4\u6e29\u4e60\u603b\u7ed3\u4e00\u4e0b\u3002\u8fd9\u91cc\u5c06\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u5ba2\u6237\u7aef，\u4ee5\u53ca\u4e00\u4e2a\u201c\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u201d\u7684\u56de\u5c04\u670d\u52a1\u5668，\u5ba2\u6237\u7aef\u53d1\u4ec0\u4e48\u5c31\u56de\u4ec0\u4e48\u3002<\/p>\n
<\/p>\n
struct in_addr {
\n in_addr_t s_addr; \/* 32-bit IPV4 address *\/
\n}; \/* network byte ordered *\/<\/p>\n
struct sockaddr_in {
\n uint8_t sin_len; \/* length of structure *\/
\n sin_family_t sin_family; \/* AF_INET *\/
\n in_port_t sin_port; \/* 16-bit TCP or UDP port number *\/
\n \/* network byte ordered *\/
\n struct in_addr sin_addr; \/* 32-bit IPV4 address *\/
\n \/* network byte ordered *\/
\n char sin_zero[8]; \/* unused *\/<\/p>\n
}; <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u4e0d\u7ba1\u662f\u5ba2\u6237\u7aef\u8fd8\u662f\u670d\u52a1\u5668，\u7f51\u7edc\u7f16\u7a0b\u7684\u7b2c\u4e00\u4e2a\u6b65\u9aa4\u662f\u8c03\u7528socket()\u51fd\u6570\u521b\u5efa\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26(sockfd)\u3002<\/p>\n
#include <sys\/socket.h>
\nint socket(int domain, int type, int protocol);
\n \/\/\u8fd4\u56de：\u82e5\u6210\u529f\u5219\u4e3a\u975e\u8d1f\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26，\u82e5\u5931\u8d25\u5219\u4e3a-1 <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 TCP\u5ba2\u6237\u7aef\u7528connect \u51fd\u6570\u6765\u5efa\u7acb\u4e0eTCP\u670d\u52a1\u5668\u7684\u8fde\u63a5，\u53d1\u8d77TCP\u4e09\u6b21\u63e1\u624b\u6d41\u7a0b\u3002<\/p>\n
#include <sys\/socket.h>
\nint connect(int sockfd, const struct sockaddr *addr,
\n socklen_t addrlen);
\n \/\/\u8fd4\u56de：\u82e5\u6210\u529f\u5219\u4e3a0，\u82e5\u51fa\u9519\u5219\u4e3a-1 <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 bind() \u51fd\u6570\u662f\u5728\u521b\u5efa\u670d\u52a1\u5668\u65f6，\u7528\u6765\u7ed1\u5b9a\u6307\u5b9a\u7684\u670d\u52a1\u5668IP\u5730\u5740\u548c\u7aef\u53e3\u7684，\u4fbf\u4e8e\u5ba2\u6237\u7aef\u901a\u8fc7IP\u5730\u5740\u548c\u7aef\u53e3\u8fdb\u884c\u8fde\u63a5\u3002<\/p>\n
#include <sys\/socket.h>
\nint bind(int sockfd, const struct sockaddr *addr,
\n socklen_t addrlen);
\n \/\/\u8fd4\u56de：\u82e5\u6210\u529f\u5219\u4e3a0，\u82e5\u5931\u8d25\u5219\u4e3a-1 <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 listen \u51fd\u6570\u4ec5\u7531TCP\u670d\u52a1\u5668\u8c03\u7528，\u7528socket \u51fd\u6570\u521b\u5efa\u7684\u5957\u63a5\u5b57\u88ab\u5047\u8bbe\u4e3a\u4e3b\u52a8\u5957\u63a5\u5b57，\u8c03\u7528listen \u51fd\u6570\u628a\u672a\u8fde\u63a5\u7684\u5957\u63a5\u5b57\u8f6c\u4e3a\u88ab\u52a8\u5957\u63a5\u5b57，\u6307\u793a\u5185\u6838\u5e94\u63a5\u6536\u6307\u5411\u8be5\u5957\u63a5\u5b57\u7684\u8fde\u63a5\u8bf7\u6c42\u3002\u8c03\u7528listen \u51fd\u6570\u4f7f\u5957\u63a5\u5b57\u4ece CLOSED\u72b6\u6001\u8f6c\u4e3a LISTEN\u72b6\u6001\u3002<\/p>\n
#include <sys\/socket.h>
\nint listen(int sockfd, int backlog);
\n \/\/\u8fd4\u56de：\u82e5\u6210\u529f\u5219\u4e3a0，\u82e5\u5931\u8d25\u5219\u4e3a-1 <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 accept \u51fd\u6570\u7531TCP\u670d\u52a1\u5668\u8c03\u7528，\u7528\u4e8e\u4ece\u5185\u6838\u5df2\u5b8c\u6210\u8fde\u63a5\u961f\u5217\u961f\u5934\u63a5\u6536\u4e0b\u4e00\u4e2a\u5df2\u5b8c\u6210\u7684\u8fde\u63a5，\u5728\u963b\u585e\u6a21\u5f0f\u65f6\u82e5\u5df2\u5b8c\u6210\u961f\u5217\u4e3a\u7a7a\u5219\u8fdb\u5165\u7761\u7720\u7b49\u5f85\u3002<\/p>\n
#include <sys\/socket.h>
\nint accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
\n \/\/\u8fd4\u56de：\u82e5\u6210\u529f\u5219\u4e3a\u975e\u8d1f\u63cf\u8ff0\u7b26，\u82e5\u5931\u8d25\u5219\u4e3a-1 <\/p>\n
\u00a0 \u00a0 \u5f53\u4e0d\u5173\u6ce8\u5ba2\u6237\u7aef\u5730\u5740\u4fe1\u606f\u65f6，\u53ef\u5c06\u00a0addr \u548c addrlen \u7f6e\u4e3aNULL\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 send \u51fd\u6570\u5728\u9700\u8981\u53d1\u9001\u6570\u636e\u65f6\u8c03\u7528，\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u7684\u51fd\u6570\u6709\u591a\u79cd，\u53ef\u6839\u636e\u9700\u6c42\u81ea\u884c\u9009\u62e9\u3002<\/p>\n
#include <sys\/socket.h>
\nssize_t send(int sockfd, const void *buf, size_t len, int flags);
\n \/\/\u8fd4\u56de，\u82e5\u6210\u529f\u5219\u4e3a\u5199\u5165\u7684\u5b57\u8282\u6570，\u82e5\u5931\u8d25\u5219\u4e3a-1 <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 recv\u00a0\u51fd\u6570\u5728\u9700\u8981\u63a5\u6536\u6570\u636e\u65f6\u8c03\u7528，\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u7684\u51fd\u6570\u6709\u591a\u79cd，\u53ef\u6839\u636e\u9700\u6c42\u81ea\u884c\u9009\u62e9\u3002<\/p>\n
#include <sys\/socket.h>
\nssize_t recv(int sockfd, void *buf, size_t len, int flags);
\n \/\/\u8fd4\u56de，\u82e5\u6210\u529f\u5219\u4e3a\u63a5\u6536\u7684\u5b57\u8282\u6570，\u82e5\u5931\u8d25\u5219\u4e3a-1，\u82e5\u6ca1\u6709\u8fde\u63a5\u5219\u4e3a0 <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u8fd0\u884c\u4ee3\u7801\u9700\u8981\u81ea\u884c\u8bbe\u7f6eip\u5730\u5740\u548c\u7aef\u53e3\u3002<\/p>\n
#include <unistd.h>
\n#include <stdio.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include <string.h>
\n#include <stdlib.h><\/p>\n
#define SER_PORT 2000
\n#define SER_ADDR "192.168.8.158"<\/p>\n
#define BUFFER_SIZE 128<\/p>\n
int main(int argc, char *argv[])
\n{
\n if (argc != 2) return -1;<\/p>\n
\/\/\u83b7\u53d6\u670d\u52a1\u5668\u7aef\u53e3
\n int port = atoi(argv[1]);<\/p>\n
int sockfd = socket(AF_INET, SOCK_STREAM, 0);<\/p>\n
struct sockaddr_in seraddr;
\n memset(seraddr, 0, sizeof(struct sockaddr_in));
\n seraddr.sin_family = AF_INET;
\n seraddr.sin_addr.s_addr = inet_addr(SER_ADDR);
\n seraddr.sin_port = htons(port);<\/p>\n
\/\/\u9700\u8981\u8f6c\u4e3a\u901a\u7528\u5957\u63a5\u5b57\u5730\u5740\u7ed3\u6784\u4f53 struct sockaddr
\n if (0 != connect(sockfd, (struct sockaddr*)&seraddr, sizeof(struct sockaddr_in))) {
\n printf("connect failed\\\\n");
\n return -1;
\n }<\/p>\n
int count =0;
\n while(1) {<\/p>\n
count++;
\n char buffer[BUFFER_SIZE] = {0};
\n sprintf(buffer, "msg %d\\\\n", count);<\/p>\n
int len = strlen(buffer);<\/p>\n
int ret = send(sockfd, buffer, len, 0);
\n printf("send ret: %d\\\\n", ret);<\/p>\n
ret = recv(sockfd, buffer, BUFFER_SIZE, 0);
\n printf("recv ret: %d %s\\\\n", ret, buffer);<\/p>\n
sleep(2);
\n }<\/p>\n
return 0;
\n} <\/p>\n
#include <stdio.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <unistd.h>
\n#include <errno.h>
\n#include <pthread.h><\/p>\n
#define SER_PORT 3000<\/p>\n
#define BUFFER_SIZE 1024<\/p>\n
void *client_thread(void *arg)
\n{
\n int clientfd = *(int *)arg;<\/p>\n
while(1) {<\/p>\n
char buffer[BUFFER_SIZE] = {0};
\n int count = recv(clientfd, buffer, BUFFER_SIZE, 0);
\n if(count == 0) {
\n printf("client disconnect\\\\n");
\n close(clientfd);
\n break;
\n }<\/p>\n
printf("recv: %s, fd: %d\\\\n", buffer, clientfd);<\/p>\n
count = send(clientfd, buffer, count, 0);
\n printf("count: %d, fd: %d\\\\n", count, clientfd);
\n }
\n}<\/p>\n
int init_server(int port)
\n{
\n int sockfd = socket(AF_INET,SOCK_STREAM,0);<\/p>\n
struct sockaddr_in seraddr;
\n memset(seraddr, 0, sizeof(struct sockaddr_in));
\n seraddr.sin_family = AF_INET;
\n seraddr.sin_addr.s_addr = htonl(INADDR_ANY); \/\/0.0.0.0
\n seraddr.sin_port = htons(port);<\/p>\n
\/\/\u9700\u8981\u8f6c\u4e3a\u901a\u7528\u5957\u63a5\u5b57\u5730\u5740\u7ed3\u6784\u4f53 struct sockaddr
\n if(-1 == bind(sockfd, (struct sockaddr*)&seraddr, sizeof(struct sockaddr))) {
\n printf("bind failed\\\\n");
\n }<\/p>\n
return sockfd;
\n}<\/p>\n
int main()
\n{
\n int sockfd = init_server(SER_PORT);<\/p>\n
listen(sockfd, 10);<\/p>\n
struct sockaddr_in cliaddr;
\n socklen_t len = sizeof(cliaddr);<\/p>\n
while(1) {<\/p>\n
int clientfd = accept(sockfd, (struct sockaddr*)&cliaddr, &len);<\/p>\n
pthread_t thid;
\n pthread_create(&thid, NULL, client_thread, &clientfd);
\n }<\/p>\n
return 0;
\n} <\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb750\u6b21\uff0c\u70b9\u8d5e14\u6b21\uff0c\u6536\u85cf17\u6b21\u3002\u7f51\u7edc\u7f16\u7a0b\u662f\u57fa\u7840\u4e2d\u7684\u6838\u5fc3\uff0c\u957f\u65f6\u95f4\u4e0d\u7528\u5c31\u4f1a\u5fd8\u4e86\uff0c\u62bd\u65f6\u95f4\u6e29\u4e60\u603b\u7ed3\u4e00\u4e0b\u3002\u8fd9\u91cc\u5c06\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u5ba2\u6237\u7aef\uff0c\u4ee5\u53ca\u4e00\u4e2a\u201c\u4e00\u8bf7\u6c42\u4e00\u7ebf\u7a0b\u201d\u7684\u670d\u52a1\u5668\u3002<\/p>\n","protected":false},"author":2,"featured_media":19234,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[43,396,44],"topic":[],"class_list":["post-19235","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-43","tag-396","tag-44"],"yoast_head":"\n