首先编写我们服务器上需要的c文件WebServer.c
涉及到的函数API：
int copy(FILE *read_f, FILE * write_f) ----- 文件内容复制的方法
int DoHTML(FILE *f, char * name) ------ socket通讯文件发送的重要方法，阐述出了socket编程中的send函数和recv函数的机理！！
int ParseReq(FILE *f, char *r) -----文件字符串解析的重要方法
int HandleConnect(int fd)
void * key(void *data)
1 #include <stdio.h> 2 #include <sys/types.h> 3 #include <sys/socket.h> 4 #include <netinet/in.h> 5 #include <stdlib.h> 6 #include <errno.h> 7 #include <string.h> 8 #include <netdb.h> 9 #include <arpa/inet.h> 10 #include <unistd.h> 11 12 int KEY_QUIT = 0; 13 char referrer[128]={0}; 14 int content_length=0; 15 #define SERVER_PORT 80 16 static char copybuf[16384]={0}; 17 #define DEBUG 1 18 19 int copy(FILE *read_f, FILE * write_f) //复制文本的API函数copy 20 { 21 int n; 22 int wrote; 23 n = fread(copybuf,1,sizeof(copybuf),read_f); 24 wrote = fwrite(copybuf,n,1,write_f); 25 return 0; 26 } 27 28 int DoHTML(FILE *f, char * name) 29 { 30 FILE *infile; 31 infile = fopen(name,"r"); //打开本地Client端请求的html文件，文件名为name 32 33 printf("Sending mesg... "); 34 copy(infile,f); //复制Client客户端请求的html文件 35 printf("Complete sending. "); 36 fread(copybuf,1,sizeof(copybuf),f); 37 fclose(infile); 38 return 0; 39 } 40 41 int ParseReq(FILE *f, char *r) //分析处理请求文件流当中的内容提取请求的文件名index.html 42 { 43 char *bp; 44 char *c; 45 #ifdef DEBUG 46 printf("req is %s", r); //请求的内容例如: GET /index.html HTTP/1.1 47 #endif 48 while(*(++r) != ' '); //去掉请求内容开头所有的空格部分 49 while(isspace(*r)) r++; //判断输入字符是否为空格/回车/制表符等，去掉所有的这些字符 50 while(*r == '/') r++; //去掉所有的'/'字符 51 bp = r; //得到文件名的起始指针 52 while(*r && (*r != ' ') && (*r != '?')) r++; 53 *r = 0; 54 c = bp; 55 printf("The Request FileName is %s ", c); 56 DoHTML(f, c); //得到文件名之后处理请求的操作 57 return 0; 58 } 59 60 int HandleConnect(int fd) 61 { 62 FILE *f; 63 char buf[160]; 64 f = fdopen(fd, "a+"); //打开对应文件名的html文件 65 setbuf(f, 0); //清楚f文件缓存区 66 fgets(buf, 150, f); //从Client端请求中获取前面150个字符 67 #ifdef DEBUG 68 printf("buf is %s", buf); 69 #endif 70 ParseReq(f, buf); //分析请求的内容 71 fflush(f); //清空文件缓冲区，将其内容写入文件 72 fclose(f); 73 return 1; 74 } 75 76 void * key(void *data) 77 { 78 int c; 79 for(;;) 80 { 81 c = getchar(); 82 if(c == 'q'||c == 'Q') 83 { 84 KEY_QUIT = 1; 85 exit(10); 86 break; 87 } 88 } 89 } 90 91 int main(int argc, char *argv[]) 92 { 93 int fd,sockfd; 94 int len; 95 volatile int true = 1; 96 struct sockaddr_in ec; 97 struct sockaddr_in server_sockaddr; 98 pthread_t th_key; 99 printf("Starting httpd... "); 100 printf("press q to quit.. "); 101 102 sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 103 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,(void*)&true,sizeof(true)); 104 server_sockaddr.sin_family = AF_INET; 105 server_sockaddr.sin_port = htons(SERVER_PORT); 106 server_sockaddr.sin_addr.s_addr = htonl(INADDR_ANY); 107 bind(sockfd,(struct sockaddr *)&server_sockaddr,sizeof(server_sockaddr)); 108 listen(sockfd,8*3); 109 110 pthread_create(&th_key,NULL,key,0); 111 112 printf("Wait for connection.... "); 113 while(1) 114 { 115 len = sizeof(ec); 116 if((fd=accept(sockfd,(void *)&ec,&len)) == -1) 117 { 118 exit(0); 119 close(sockfd); 120 } 121 printf("Handle Connection... "); 122 HandleConnect(fd); 123 } 124 }
编写需要的Makefile文件，注意M是大写
server:WebServer.c gcc -o server WebServer.c -lpthread clean: rm server
添加我们的html文件，例如取名index.html，文件的内容如下所示：
<!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } </style> </head> <body> <h1>Welcome to nginx!This is my first Web Project!Author MM1994UESTC</h1> <p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p> <p>For online documentation and support please refer to <a href="http://nginx.org/">nginx.org</a>.<br/> Commercial support is available at <a href="http://nginx.com/">nginx.com</a>.</p> <p><em>Thank you for using nginx.</em></p> </body> </html>
接下来就是运行我们的server文件，主要要使用sudo权限或者root权限来执行server文件：
sudo ./server
下面打开浏览器输入对应的主机的IP地址加上文件名称如：192.168.1.125/index.html
完~