tinyhttp伺服器程式碼淺析
參考文章
get和post請求格式
- get不帶參請求格式
"GET / HTTP/1.1\n\n\n" - get帶參請求格式(引數即url地址?後的部分)
"GET /?具體引數 HTTP/1.1\n\n\n" - post請求
"POST / HTTP/1.1\nContent-Length:119\n\nsongshiqixieaoxieao\n\n"意思是傳送一內容長度為19的post請求。
具體分析
accept-request函式分析請求型別,get不帶引數請求轉serve_file函式處理,get帶引數請求和post請求轉execute_cgi函式處理。
serve_file函式傳送請求頭(headers函式)和html文件(cat函式)。
execute_cgi函式構造cgi_output和cgi_input2個管道，再fork出一程式，父程式負責與客戶端之間的資料傳輸(讀寫),子程式通過cgi_input接收父程式接收來的資訊，進行資料處理後，將要傳送的資訊通過cgi_output傳遞給父程式，父程式再傳送給客戶端。簡而言之，父程式讀寫，子程式處理。
11.jpg
伺服器程式碼
/* J. David's webserver */
/* This is a simple webserver.
* Created November 1999 by J. David Blackstone.
* CSE 4344 (Network concepts), Prof. Zeigler
* University of Texas at Arlington
*/
/* This program compiles for Sparc Solaris 2.6.
* To compile for Linux:
* 1) Comment out the #include <pthread.h> line.
* 2) Comment out the line that defines the variable newthread.
* 3) Comment out the two lines that run pthread_create().
* 4) Uncomment the line that runs accept_request().
* 5) Remove -lsocket from the Makefile.
*/
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <ctype.h>
#include <strings.h>
#include <string.h>
#include <sys/stat.h>
#include <pthread.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <time.h>
#include <stdlib.h>
#include <sys/sem.h>
#include <semaphore.h>
union semun
{
int val;
struct semid_ds *buf;
unsigned short *arry;
};
static int sem_id = 0;
static int sem_id1 = 0;
static int set_semvalue(int,int);
static void del_semvalue(int);
static int semaphore_p(int);
static int semaphore_v(int);
//pthread_mutex_t mutex;
//sem_t father_sem; //整型
//sem_t son_sem;
#define ISspace(x) isspace((int)(x))
#define SERVER_STRING "Server: jdbhttpd/0.1.0\r\n"
clock_t start,end;
void accept_request(int);
void bad_request(int);
void cat(int, FILE *);
void cannot_execute(int);
void error_die(const char *);
void execute_cgi(int, const char *, const char *, const char *);
int get_line(int, char *, int);
void headers(int/*, const char **/);
void not_found(int);
void serve_file(int, const char *);
int startup(u_short *);
void unimplemented(int);
/**********************************************************************/
/* A request has caused a call to accept() on the server port to
* return. Process the request appropriately.
* Parameters: the socket connected to the client */
/**********************************************************************/
void accept_request(int client)
{
char buf[1024];
int numchars;
char method[255];
char url[255];
char path[512];
size_t i, j;
struct stat st;
int cgi = 0; /* becomes true if server decides this is a CGI program */
char *query_string = NULL;
/*得到請求的第一行*/
/*GET / HTTP/1.1\n*/
numchars = get_line(client, buf, sizeof(buf));
i = 0; j = 0;
/*把客戶端的請求方法存到 method 陣列*/
/*用空格終止*/
/*strcasecmp忽略大小寫比較字串*/
while (!ISspace(buf[j]) && (i < sizeof(method) - 1))
{
method[i] = buf[j];
i++; j++;
}
method[i] = '\0';
/*如果既不是 GET 又不是 POST 則無法處理 */
if (strcasecmp(method, "GET") && strcasecmp(method, "POST"))
{
unimplemented(client);
return;
}
/* POST 的時候開啟 cgi */
if (strcasecmp(method, "POST") == 0)
{
printf("識別為post\n");
cgi = 1;
}
/*讀取 url 地址*/
i = 0;
while (ISspace(buf[j]) && (j < sizeof(buf)))
j++;
/*仍然用空格終止*/
while (!ISspace(buf[j]) && (i < sizeof(url) - 1) && (j < sizeof(buf)))
{
/*存下 url */
url[i] = buf[j];
i++; j++;
}
url[i] = '\0';
/*處理 GET 方法*/
if (strcasecmp(method, "GET") == 0)
{
/* 待處理請求為 url */
query_string = url;
while ((*query_string != '?') && (*query_string != '\0'))
query_string++;
/* GET 方法特點，? 後面為引數*/
if (*query_string == '?')
{
/*開啟 cgi */
cgi = 1;
*query_string = '\0';
query_string++;
}
}
/*格式化 url 到 path 陣列，html 檔案都在 htdocs 中*/
sprintf(path, "htdocs%s", url);
/*預設情況為 index.html */
if (path[strlen(path) - 1] == '/')
strcat(path, "index.html");
/*根據路徑找到對應檔案 */
if (stat(path, &st) == -1) {
/*把所有 headers 的資訊都丟棄*/
printf("路徑沒找到檔案\n");
while ((numchars > 0) && strcmp("\n", buf)) /* read & discard headers */
numchars = get_line(client, buf, sizeof(buf));
/*迴應客戶端找不到*/
not_found(client);
}
else
{
printf("路徑找到檔案\n");
printf("path:%s\n",path);
/*如果是個目錄，則預設使用該目錄下 index.html 檔案*/
if ((st.st_mode & S_IFMT) == S_IFDIR)
{
// printf("6666\n");
strcat(path, "/index.html");
}
/*檔案許可權:分別是所有者可執行、群組可執行、其他可執行*/
if ((st.st_mode & S_IXUSR) || (st.st_mode & S_IXGRP) || (st.st_mode & S_IXOTH) )
cgi = 1;
/*不是 cgi,直接把伺服器檔案返回，否則執行 cgi */
if (!cgi)
{
printf("cgi=0,進入serve_file\n");
printf("path:%s\n",path);
serve_file(client, path);
}
else
{
printf("cgi=1,進入execute_cgi\n");
execute_cgi(client, path, method, query_string);
}
}
/*斷開與客戶端的連線（HTTP 特點：無連線）*/
close(client);
}
/**********************************************************************/
/* Inform the client that a request it has made has a problem.
* Parameters: client socket */
/**********************************************************************/
void bad_request(int client)
{
char buf[1024];
/*迴應客戶端錯誤的 HTTP 請求 */
sprintf(buf, "HTTP/1.0 400 BAD REQUEST\r\n");
send(client, buf, sizeof(buf), 0);
sprintf(buf, "Content-type: text/html\r\n");
send(client, buf, sizeof(buf), 0);
sprintf(buf, "\r\n");
send(client, buf, sizeof(buf), 0);
sprintf(buf, "<P>Your browser sent a bad request, ");
send(client, buf, sizeof(buf), 0);
sprintf(buf, "such as a POST without a Content-Length.\r\n");
send(client, buf, sizeof(buf), 0);
}
/**********************************************************************/
/* Put the entire contents of a file out on a socket. This function
* is named after the UNIX "cat" command, because it might have been
* easier just to do something like pipe, fork, and exec("cat").
* Parameters: the client socket descriptor
* FILE pointer for the file to cat */
/**********************************************************************/
void cat(int client, FILE *resource)
{
char buf[1024];
printf("7777\n");
/*讀取檔案中的所有資料寫到 socket */
fgets(buf, sizeof(buf), resource);
while (!feof(resource))
{
send(client, buf, strlen(buf), 0);
fgets(buf, sizeof(buf), resource);
}
printf("cat讀取完畢\n");
}
/**********************************************************************/
/* Inform the client that a CGI script could not be executed.
* Parameter: the client socket descriptor. */
/**********************************************************************/
void cannot_execute(int client)
{
char buf[1024];
/* 迴應客戶端 cgi 無法執行*/
sprintf(buf, "HTTP/1.0 500 Internal Server Error\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "Content-type: text/html\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "<P>Error prohibited CGI execution.\r\n");
send(client, buf, strlen(buf), 0);
}
/**********************************************************************/
/* Print out an error message with perror() (for system errors; based
* on value of errno, which indicates system call errors) and exit the
* program indicating an error. */
/**********************************************************************/
void error_die(const char *sc)
{
/*出錯資訊處理 */
perror(sc);
exit(1);
}
/**********************************************************************/
/* Execute a CGI script. Will need to set environment variables as
* appropriate.
* Parameters: client socket descriptor
* path to the CGI script */
/**********************************************************************/
void execute_cgi(int client, const char *path,
const char *method, const char *query_string)
{
printf("進入execute_cgi\n");
char buf[1024];
int cgi_output[2];
int cgi_input[2];
pid_t pid;
int status;
int i;
char c;
int numchars = 1;
int content_length = -1;
buf[0] = 'A'; buf[1] = '\0';
if (strcasecmp(method, "GET") == 0)
while ((numchars > 0) && strcmp("\n", buf)) /* read & discard headers */
numchars = get_line(client, buf, sizeof(buf));
else /* POST */
{
numchars = get_line(client, buf, sizeof(buf));
while ((numchars > 0) && strcmp("\n", buf))
{
buf[15] = '\0';/*切割方便比較*/
if (strcasecmp(buf, "Content-Length:") == 0)
printf("buf[16]=%c\n",buf[16]);
/*atoi函式為字串轉整型，這裡取buf[16]的地址，為字串轉整型準備。*/
content_length = atoi(&(buf[16]));
numchars = get_line(client, buf, sizeof(buf));
}
if (content_length == -1) {
printf("bad_request\n");
bad_request(client);
return;
}
}
printf("測試bad_request content_length=%d\n",content_length);
sprintf(buf, "HTTP/1.0 200 OK\r\n");
send(client, buf, strlen(buf), 0);
if (pipe(cgi_output) < 0) {
cannot_execute(client);
return;
}
if (pipe(cgi_input) < 0) {
cannot_execute(client);
return;
}
sem_id = semget((key_t)1234, 1, 0666 | IPC_CREAT);
sem_id1 = semget((key_t)1235, 1, 0666 | IPC_CREAT);
if(!set_semvalue(sem_id,1))
{
fprintf(stderr, "Failed to initialize semaphore\n");
exit(EXIT_FAILURE);
}
if(!set_semvalue(sem_id1,0))
{
fprintf(stderr, "Failed to initialize semaphore\n");
exit(EXIT_FAILURE);
}
if ( (pid = fork()) < 0 ) {
cannot_execute(client);
return;
}
if (pid == 0) /* child: CGI script */
{
if(!semaphore_p(sem_id))
exit(EXIT_FAILURE);
// sem_wait(&son_sem);
// pthread_mutex_lock(&mutex);
printf("這是子程式,第一原子操作開始\n");
char meth_env[255];
char query_env[255];
char length_env[255];
dup2(cgi_output[1], 1);
dup2(cgi_input[0], 0);
close(cgi_output[0]);
close(cgi_input[1]);
sprintf(meth_env, "REQUEST_METHOD=%s", method);
putenv(meth_env);
if (strcasecmp(method, "GET") == 0) {
sprintf(query_env, "QUERY_STRING=%s", query_string);
putenv(query_env);
}
else { /* POST */
sprintf(length_env, "CONTENT_LENGTH=%d", content_length);
putenv(length_env);
}
//printf("第一原子操作完成\n");
if(!semaphore_v(sem_id1))
exit(EXIT_FAILURE);
// pthread_mutex_unlock(&mutex);
// sem_post(&father_sem);
//將訊號量的值加一
// sem_wait(&son_sem);
// pthread_mutex_lock(&mutex);
if(!semaphore_p(sem_id))
exit(EXIT_FAILURE);
printf("伺服器迴應:\n");
// while (read(cgi_input[0], &c, 1) > 0)
char dd[30]={'\0'};
//gets(dd);
read(cgi_input[0], dd, sizeof(dd));
read(stdin,&dd,sizeof(dd));
printf("dd=%s\n",dd);
execl(path, path, NULL);
if(!semaphore_v(sem_id1))
exit(EXIT_FAILURE);
// pthread_mutex_unlock(&mutex);
exit(0);
} else {
printf("這是父程式，訊號量初始化\n");
/* parent */
// printf("這是父程式,son_sem=%d,father_sem=%d\n",&son_sem,&father_sem);
// sem_wait(&father_sem);
// pthread_mutex_lock(&mutex);
if(!semaphore_p(sem_id1))
exit(EXIT_FAILURE);
printf("這是父程式 第二原子操作開始\n");
close(cgi_output[1]);
close(cgi_input[0]);
if (strcasecmp(method, "POST") == 0)
for (i = 0; i < content_length; i++) {
recv(client, &c, 1, 0);
printf("%c",c);/*不打\n換行符，無法顯示？*/
write(cgi_input[1], &c, 1);
}
printf("recv完畢 第二原子操作結束\n");
if(!semaphore_v(sem_id))
exit(EXIT_FAILURE);
if(!semaphore_p(sem_id1))
exit(EXIT_FAILURE);
printf("父程式 第四原子操作開始\n");
// pthread_mutex_unlock(&mutex);
//將訊號量的值加一
// sem_post(&son_sem);
// printf("son_sem+1,son_sem=%d\n",son_sem);
// sem_wait(&father_sem);
printf("send:\n");
char d[40]={'\0'};
int di=0;
while (read(cgi_output[0], &c, 1) > 0)
{
printf("%c",c);
d[di]=c;
di++;
}
d[++di]='\0';
send(client, d, sizeof(d), 0);
printf("send完畢\n");
close(cgi_output[0]);
close(cgi_input[1]);
printf("父程式 第四原子操作結束\n");
del_semvalue(sem_id);
del_semvalue(sem_id1);
waitpid(pid, &status, 0);
}
}
/**********************************************************************/
/* Get a line from a socket, whether the line ends in a newline,
* carriage return, or a CRLF combination. Terminates the string read
* with a null character. If no newline indicator is found before the
* end of the buffer, the string is terminated with a null. If any of
* the above three line terminators is read, the last character of the
* string will be a linefeed and the string will be terminated with a
* null character.
* Parameters: the socket descriptor
* the buffer to save the data in
* the size of the buffer
* Returns: the number of bytes stored (excluding null) */
/**********************************************************************/
int get_line(int sock, char *buf, int size)
{
int i = 0;
char c = '\0';
int n;
/*把終止條件統一為 \n 換行符，標準化 buf 陣列*/
while ((i < size - 1) && (c != '\n'))
{
/*一次僅接收一個位元組*/
n = recv(sock, &c, 1, 0);
/* DEBUG printf("%02X\n", c); */
if (n > 0)
{
/*上文已經將終止條件設定為\n，接下來考慮的是：如果是以\r\n為結束位和\r為結束位，該如何將其改為\n為結束位*/
/*對於\r為結束位，直接改為\n結束位*/
/*對於\r\n為結束位，將\r\n改為\n，作為結束位*/
/*收到 \r 則繼續接收下個位元組，因為換行符可能是 \r\n */
if (c == '\r')
{
/*MSG_PEEK撇一眼*/
/*使用 MSG_PEEK 標誌使下一次讀取依然可以得到這次讀取的內容，可認為接收視窗不滑動*/
/*撇一眼判斷是不是\r\n*/
n = recv(sock, &c, 1, MSG_PEEK);
/* DEBUG printf("%02X\n", c); */
/*但如果是換行符則把它吸收掉*/
if ((n > 0) && (c == '\n'))
recv(sock, &c, 1, 0);
else
c = '\n';
}
/*存到緩衝區*/
buf[i] = c;
i++;
}
else
c = '\n';
}
buf[i] = '\0';
/*返回 buf 陣列大小*/
return(i);
}
/**********************************************************************/
/* Return the informational HTTP headers about a file. */
/* Parameters: the socket to print the headers on
* the name of the file */
/**********************************************************************/
void headers(int client/*, const char *filename*/)
{
char buf[1024];
int ret=0;
// (void)filename; /* could use filename to determine file type */
printf("headers開始\n");
strcpy(buf, "HTTP/1.0 200 OK\r\n");
ret=send(client, buf, strlen(buf), 0);
if(ret==-1)
{
printf("songshiqi\n");
perror("1send");
}
strcpy(buf, SERVER_STRING);
ret=send(client, buf, strlen(buf), 0);
if(ret==-1)
{
printf("songshiqi\n");
perror("2send");
}
printf("headers中場\n");
sprintf(buf, "Content-Type: text/html\r\n");
ret=send(client, buf, strlen(buf), 0);
if(ret==-1)
{
perror("3send");
}
strcpy(buf, "\r\n");
ret=send(client, buf, strlen(buf), 0);
if(ret==-1)
{
perror("4send");
}
printf("headers結束\n");
}
/**********************************************************************/
/* Give a client a 404 not found status message. */
/**********************************************************************/
void not_found(int client)
{
char buf[1024];
/* 404 頁面 */
sprintf(buf, "HTTP/1.0 404 NOT FOUND\r\n");
send(client, buf, strlen(buf), 0);
/*伺服器資訊*/
sprintf(buf, SERVER_STRING);
send(client, buf, strlen(buf), 0);
sprintf(buf, "Content-Type: text/html\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "<HTML><TITLE>Not Found</TITLE>\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "<BODY><P>The server could not fulfill\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "your request because the resource specified\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "is unavailable or nonexistent.\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "</BODY></HTML>\r\n");
send(client, buf, strlen(buf), 0);
}
/**********************************************************************/
/* Send a regular file to the client. Use headers, and report
* errors to client if they occur.
* Parameters: a pointer to a file structure produced from the socket
* file descriptor
* the name of the file to serve */
/**********************************************************************/
void serve_file(int client, const char *filename)
{
FILE *resource = NULL;
int numchars = 1;
char buf[1024];
buf[0] = 'A'; buf[1] = '\0';
while ((numchars > 0) && strcmp("\n", buf)) /* read & discard headers */
numchars = get_line(client, buf, sizeof(buf));
resource = fopen(filename, "r");
if (resource == NULL)
not_found(client);
else
{
printf("sesource不為0,即將執行headers和cat\n");
headers(client/*, filename*/);
cat(client, resource);
}
//sleep(1);
fclose(resource);
printf("執行緒已執行完畢\n");
end = clock();
printf("songshiqi\n");
printf("time=%f\n",(double)(end-start)/1000);
}
/**********************************************************************/
/* This function starts the process of listening for web connections
* on a specified port. If the port is 0, then dynamically allocate a
* port and modify the original port variable to reflect the actual
* port.
* Parameters: pointer to variable containing the port to connect on
* Returns: the socket */
/**********************************************************************/
int startup(u_short *port)
{
int httpd = 0;
struct sockaddr_in name;
httpd = socket(PF_INET, SOCK_STREAM, 0);/*建立一個TCP套接字*/
if (httpd == -1)
error_die("socket");
memset(&name, 0, sizeof(name));
name.sin_family = AF_INET;
name.sin_port = htons(11004);/*若埠為0,則系統隨機選擇一個未被使用的埠號,這裡改為指定一個空閒的埠號*/
name.sin_addr.s_addr = htonl(INADDR_ANY);/*系統自動填入本機IP*/
if (bind(httpd, (struct sockaddr *)&name, sizeof(name)) < 0)/*socket繫結到制定的IP地址和埠號*/
error_die("bind");
if (*port == 0) /* if dynamically allocating a port */
{
int namelen = sizeof(name);
/*獲取主機名,從而獲取分配的埠號*/
if (getsockname(httpd, (struct sockaddr *)&name, (socklen_t *)&namelen) == -1)
error_die("getsockname");
*port = ntohs(name.sin_port);
}
if (listen(httpd, 5) < 0)/*監聽連線請求。5--backlog:系統維護的一個跟蹤握手未完成的連線的佇列的大小*/
error_die("listen");
return(httpd);
}
/**********************************************************************/
/* Inform the client that the requested web method has not been
* implemented.
* Parameter: the client socket */
/**********************************************************************/
void unimplemented(int client)
{
char buf[1024];
/* HTTP method 不被支援*/
sprintf(buf, "HTTP/1.0 501 Method Not Implemented\r\n");
send(client, buf, strlen(buf), 0);
/*伺服器資訊*/
sprintf(buf, SERVER_STRING);
send(client, buf, strlen(buf), 0);
sprintf(buf, "Content-Type: text/html\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "<HTML><HEAD><TITLE>Method Not Implemented\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "</TITLE></HEAD>\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "<BODY><P>HTTP request method not supported.\r\n");
send(client, buf, strlen(buf), 0);
sprintf(buf, "</BODY></HTML>\r\n");
send(client, buf, strlen(buf), 0);
}
/**********************************************************************/
int main(void)
{
// pthread_mutex_init(&mutex, NULL);
//初始化訊號量
// sem_init(&son_sem, 1, 0); //將son_sem值置為1
// sem_init(&father_sem, 1, 0); //將father_sem值置為0
//sem_post(&father_sem);
int server_sock = -1;
u_short port = 0;
int client_sock = -1;
struct sockaddr_in client_name;
int client_name_len = sizeof(client_name);
pthread_t newthread;
/*在對應埠建立 httpd 服務*/
server_sock = startup(&port);
printf("httpd running on port %d\n", port);
int songshiqi=1;
while (1)
{
/*套接字收到客戶端連線請求*/
client_sock = accept(server_sock,(struct sockaddr *)&client_name,&client_name_len);
printf("there have a client,num %d\n",songshiqi);
start = clock();
songshiqi++;
if (client_sock == -1)
error_die("accept");
/*派生新執行緒用 accept_request 函式處理新請求*/
/* accept_request(client_sock); */
if (pthread_create(&newthread , NULL, accept_request, client_sock) != 0)
perror("pthread_create");
// sleep(1);
// exit(1);
}
close(server_sock);
return(0);
}
static int set_semvalue(int sem_id,int i)
{
//用於初始化訊號量，在使用訊號量前必須這樣做
union semun sem_union;
sem_union.val = i;
if(semctl(sem_id, 0, SETVAL, sem_union) == -1)
return 0;
return 1;
}
static void del_semvalue(int sem_id)
{
//刪除訊號量
union semun sem_union;
if(semctl(sem_id, 0, IPC_RMID, sem_union) == -1)
fprintf(stderr, "Failed to delete semaphore\n");
}
static int semaphore_p(int sem_id)
{
//對訊號量做減1操作，即等待P（sv）
struct sembuf sem_b;
sem_b.sem_num = 0;
sem_b.sem_op = -1;//P()
sem_b.sem_flg = SEM_UNDO;
if(semop(sem_id, &sem_b, 1) == -1)
{
fprintf(stderr, "semaphore_p failed\n");
return 0;
}
return 1;
}
static int semaphore_v(int sem_id)
{
//這是一個釋放操作，它使訊號量變為可用，即傳送訊號V（sv）
struct sembuf sem_b;
sem_b.sem_num = 0;
sem_b.sem_op = 1;//V()
sem_b.sem_flg = SEM_UNDO;
if(semop(sem_id, &sem_b, 1) == -1)
{
fprintf(stderr, "semaphore_v failed\n");
return 0;
}
return 1;
}
客戶端程式碼
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <time.h>
/*伺服器傳送了3個包，客戶端接收一個包，但量一樣，保證量。*/
/*當前讀取，當前讀取，可能會漏讀很多*/
/*關注recv阻塞*/
clock_t start,end;
int main(int argc, char *argv[])
{
int sockfd;
int len;
struct sockaddr_in address;
int result;
char buf[] = "POST / HTTP/1.1\nContent-Length:119\n\nsongshiqixieaoxieao\n\n";
char get[1024] = {0};
sockfd = socket(AF_INET, SOCK_STREAM, 0);
address.sin_family = AF_INET;
address.sin_addr.s_addr = inet_addr("127.0.0.1");/*本機IP地址*/
address.sin_port = htons(11004);/*tinyhttpd的埠*/
len = sizeof(address);
result = connect(sockfd, (struct sockaddr *)&address, len);
if (result == -1)
{
perror("oops:client:");
_exit(1);
}
start = clock();
write(sockfd,buf, sizeof(buf));/*傳送請求*/
// time_t start,end;
// start =time(NULL);//or time(&start);
int ret=1;
int myalready=0;
int songshiqi=0;
sleep(2);
//ret=read(sockfd,get+myalready, sizeof(get));/*接收返回資料*/
//songshiqi++;
// myalready=+ret;
while(/*myalready<240*/1)
{
ret=read(sockfd,get+myalready, sizeof(get));/*接收返回資料*/
if(ret==-1)
{
perror("ret");
break;
}
//sleep(1);
songshiqi++;
myalready=+ret;
printf("songshiqi=%d ret=%d myalready=%d\n",songshiqi,ret,myalready);
}
end =clock();
printf("time=%lf\n",(double)(end-start)/1000);
/*列印返回資料*/
printf("-----------------------------show buffer -----------------------------\n");
printf("%s",get);
printf("----------------------------------------------------------------------\n");
close(sockfd);
_exit(0);
}
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