Linux c 实现HTTP通信,Linux c socket 实现http

#include #define IPSTR "192.168.107.129"

#define PORT 80

#define BUFSIZE 1024

int main(int argc, char **argv)

{

int sockfd, ret, i, h;

struct sockaddr_in servaddr;

char str1[4096], str2[4096], buf[BUFSIZE], *str;

socklen_t len;

fd_set t_set1;

struct timeval tv;

char *cmd;

if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ) {

printf("Socket Create error!\n");

exit(0);

};

bzero(&servaddr, sizeof(servaddr));

servaddr.sin_family = AF_INET;

servaddr.sin_port = htons(PORT);

if (inet_pton(AF_INET, IPSTR, &servaddr.sin_addr) <= 0 ){

printf("inet_pton error!\n");

exit(0);

};

if (connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0){

printf("Socket connect error!\n");

exit(0);

}

printf("Socket connect success\n");

//发送数据

memset(str2, 0, 4096);

strcat(str2, "name=songzy");

str=(char *)malloc(128);

len = strlen(str2);

sprintf(str, "%d", len);

memset(str1, 0, 4096);

strcat(str1, "PUT /rest/index.php/api/users/7 HTTP/1.1\n");

strcat(str1, "Host: 192.168.107.129\n");

strcat(str1, "Content-Type: application/x-www-form-urlencoded\n");

strcat(str1, "Content-Length: ");

strcat(str1, str);

strcat(str1, "\n\n");

strcat(str1, str2);

strcat(str1, "\r\n\r\n");

printf("%s\n",str1);

ret = write(sockfd,str1,strlen(str1));

if (ret < 0) {

printf("Send filed ! Error Code is %d，Error is '%s'\n",errno, strerror(errno));

exit(0);

}else{

printf("Send Success，Has Send%dbite！\n\n", ret);

}

FD_ZERO(&t_set1);

FD_SET(sockfd, &t_set1);

while(1){

sleep(2);

tv.tv_sec= 0;

tv.tv_usec= 0;

h= 0;

printf("--------------->1");

h= select(sockfd +1, &t_set1, NULL, NULL, &tv);

printf("--------------->2");

//if (h == 0) continue;

if (h < 0) {

close(sockfd);

printf("Select Error！\n");

return -1;

};

if (h > 0){

memset(buf, 0, 4096);

i= read(sockfd, buf, 4095);

if (i==0){

close(sockfd);

printf("Read finished\n");

return -1;

}

printf("%s\n", buf);

}

}

close(sockfd);

return 0;

}