Linux _多线程并发服务TCP

client1.c

#include <sys/types.h>#include <sys/socket.h>#include <sys/stat.h>#include <sys/un.h>#include <netinet/in.h>#include <arpa/inet.h>#include <fcntl.h>#include <stdlib.h>#include <stdio.h>#include <errno.h>#include <signal.h>#include <string.h>#define BUFF_SIZE 1024int main(void){    int sockfd;    struct sockaddr_in server_addr;    int ret;    int pd;    char buff[BUFF_SIZE];    sockfd = socket (AF_INET, SOCK_STREAM, 0);    server_addr.sin_addr.s_addr = inet_addr("10.10.0.9");    server_addr.sin_family = AF_INET;    server_addr.sin_port = htons(9000);    ret = connect(sockfd, (struct sockaddr*)&server_addr, sizeof(server_addr));    if (ret == -1) {        perror("connect");        exit(errno);    }    strcpy(buff, "hello");    ret = write(sockfd, buff, strlen(buff)+1);    if (ret == -1) {        perror("client write");        exit(errno);    }    ret = read(sockfd, buff, sizeof(buff));    if (ret == -1) {        perror("client read");        exit(errno);    }    printf("%s\n", buff);    exit(0);}

server1.c

#include <sys/types.h>#include <sys/socket.h>#include <sys/stat.h>#include <sys/un.h>#include <netinet/in.h>#include <arpa/inet.h>#include <fcntl.h>#include <stdlib.h>#include <stdio.h>#include <errno.h>#include <signal.h>#define BUFF_SIZE 1024 //–Ë∂‘∏√»´æ÷±‰¡øΩ¯––ª•≥‚±£ª§,ªÚΩ¯––◊™¥¢°£struct sockaddr_in client_addr;int clientfd;static void str2up(char *p){    while (*p) {        if (*p >= 'a' && *p <= 'z') {            *p = *p - 'a' + 'A';        }        p++;    }}static void * client_thread_handle(void *arg){    char buff[BUFF_SIZE];     char tmp[100];    int fd = clientfd;    int ret;    ret = read(fd, buff, sizeof(buff));    if (ret==-1) {        perror("read");        exit(1);    }    str2up(buff);    sprintf(tmp, "-thread(%u)", pthread_self());    strcat(buff, tmp);      ret = write(fd, buff, strlen(buff)+1);      if (ret == -1) {        perror("write");        exit(1);    }    sleep(3);    pthread_exit(0);}int main(void){    int sockfd;    struct sockaddr_in server_addr;    int ret;    int pd;    socklen_t len;    pthread_t pt;    sockfd = socket (AF_INET, SOCK_STREAM, 0);    server_addr.sin_addr.s_addr = htons(INADDR_ANY);    server_addr.sin_family = AF_INET;    server_addr.sin_port = htons(9000);    /*  π∂Àø⁄ø…÷ÿ∏¥∞Û∂® */    int on = 1;    int ret_val;    ret_val = setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));    if(ret_val < 0) {        perror("setsockopt SO_REUSEADDR");        exit(1);        }    ret = bind(sockfd, (struct sockaddr*)&server_addr, sizeof(server_addr));    if (ret == -1) {        perror("bind");        exit(errno);    }    ret = listen(sockfd, 5);    if (ret == -1) {        perror("listen");        exit(errno);    }    while (1) {        clientfd = accept(sockfd, (struct sockaddr*)&client_addr, &len);        if (clientfd == -1) {            perror("accept");            //exit(errno);            continue;        }        /* –Ë“™∂ÓÕ‚∂‘clientfdΩ¯––ª•≥‚±£ª§ªÚ’flΩ¯––◊™¥¢ */        ret = pthread_create(&pt, 0, client_thread_handle, 0);        if (ret == -1)  {            perror("pthread_create");            //exit(errno);            continue;        }         pthread_detach(pt);    }    exit(0);}