c socket 开发测试

c语言异常

参照他人代码写一个tcp的 socket 开发测试

异常A，在mac osx系统下编译失败，缺库转到debian下。

异常B，include引用文件顺序不对，编译大遍异常

异常C,/usr/include/x86_64-linux-gnu/sys/types.h:34:1: error: unknown type name ‘__u_char’ 文件前注释的问题，删掉注释则通过

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <errno.h>
#include <stdio.h>
int accepthandle(int acceptpoint);
int main(void) {
    int socketfid;
    char buf[1024];
    struct sockaddr_in  server_add;
    char * localaddr = "127.0.0.1";//
    server_add.sin_family=AF_INET;
    server_add.sin_port=htons(29001);
    server_add.sin_addr.s_addr=htonl(INADDR_ANY);

    socketfid=socket(AF_INET,SOCK_STREAM,0);
    printf("socket start \n");
    if (socketfid < 0) {
        printf("socket error \n");
        return -1;
    }
    printf("bind start \n");
    if(bind(socketfid,(struct sockaddr *)&server_add,sizeof(struct sockaddr))<0){
        printf("bind error \n");
        return -1;
    }
    //监听套接子
    printf("listen start \n");
    if(listen(socketfid,1024)<0){
        printf("listen error \n");
        return -1;
    }
    printf("accept start \n");
    while(1){
        int pid;
        struct sockaddr_in client_add;
        memset(&client_add, 0, sizeof(client_add));
        int leng=sizeof(client_add);

        int acceptresult=accept(socketfid,(struct sockaddr *) &client_add,&(leng));
        if (acceptresult < 0) {
            printf("accept error %d \n", acceptresult);
            return -1;
        }
        printf("infor \n");
        printf("clent addr%s porit %d\n",
               inet_ntop(AF_INET, &client_add.sin_addr, buf, sizeof(buf)),
               ntohs(client_add.sin_port));
        pid = fork();
        if (pid < 0) {
            close(acceptresult);
        }
        else if(pid == 0){
            //子进程停止监听，去处理接收数据
            close(socketfid);
            accepthandle(acceptresult);
        } else {
            //父进程 什么都不干（继续监听）
        }
    }
    return EXIT_SUCCESS;
}
int accepthandle(int acceptpoint){
    char buf[1024];
    int readresult;
    while(1){
        readresult=read(acceptpoint,buf,sizeof(buf));
        if(readresult<0){
            printf("read error \n");
            close(acceptpoint);
            break;
        }
        else if (readresult==0){
            printf("client exit \n");
            close(acceptpoint);
            break;
        }
        else{
            printf("client:%s\n", buf);
            if (strcmp("exit", buf) == 0) {
                printf("exit \n");
                close(acceptpoint);
                return 0;
            }

        }

    }
    return 0;
}