c linux socket http get

#include<netdb.h>

#include<netinet/in.h>

#include<sys/socket.h>

//LOG_TAG

#define LOGI(...)__android_log_print(ANDROID_LOG_INFO, "xcl",__VA_ARGS__)

#define LOGE(...)__android_log_print(ANDROID_LOG_ERROR, "xcl",__VA_ARGS__)

#define BUFFSIZE0xF000

int httpGet(char*hostname)

{

LOGI("httpGet");

LOGI(hostname);

charrequest[BUFFSIZE], text[BUFFSIZE];

charmyurl[BUFFSIZE] = {0};

char host[BUFFSIZE]= {0};

char GET[BUFFSIZE]= {0};

struct sockaddr_insin;

int sockfd;

if ((sockfd =socket (AF_INET, SOCK_STREAM, 0)) == -1) {

LOGE("httpgetcreate socket failed !");

return -100;

}

struct hostent *host_addr = gethostbyname(hostname);

if(host_addr==NULL){

LOGE("httpgetUnable to locate host");

return -103;

}

sin.sin_family =AF_INET;

sin.sin_port =htons( (unsigned short)80);

sin.sin_addr.s_addr= *((unsigned long*)host_addr->h_addr_list[0]);

if( connect(sockfd,(const struct sockaddr *)&sin, sizeof(struct sockaddr_in) ) == -1 ){

LOGE("httpgetconnect failed !");

return -101;

}

LOGI("httpGetsend");

// 向WEB服务器发送URL信息

memset(request, 0,BUFFSIZE);

strcat(request,"GET /index.html HTTP/1.1\r\n"); //请求内容与http版本

strcat(request,"HOST:"); //主机名，，格式："HOST:主机"

strcat(request,hostname);

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

strcat(request,"Accept:*/*\r\n"); //接受类型，所有类型

// strcat(request,"User-Agent:Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)");//指定浏览器类型？

// strcat(request,"Connection: Keep-Alive\r\n");//设置连接，保持连接

// strcat(request,"Set Cookie:0\r\n");//设置Cookie

// strcat(request,"Range: bytes=0 - 500\r\n");//设置请求字符串起止位置，断点续传关键"Range:bytes=999 -"

strcat(request,"\r\n");//空行表示结束

LOGI(request);

if( send (sockfd,request, strlen(request), 0) == -1){

LOGE("httpgetsend failed");

return -99;

}

LOGI("httpGetrecv");

memset(text,0,BUFFSIZE);

if( recv (sockfd,text, BUFFSIZE, 0) == -1){

LOGE("httpgetrecv failed");

return -98;

}

LOGI(text);

LOGI("httpGetend");

return 0;

}

调用：

httpGet("www.sina.com.cn");

LOGI(text);打印如下信息:

HTTP/1.1 200 OK

Content-Type:text/html

Vary:Accept-Encoding

X-Powered-By:shci_v1.03

Server: nginx

Date: Sat, 19 Oct2013 02:50:16 GMT

Last-Modified:Wed, 27 Apr 2005 02:00:04 GMT

Expired: Sat, 19Oct 2013 02:51:16 GMT

Cache-Control:max-age=60

Age: 1

Content-Length:25032

X-Cache: HIT fromxidan33-99.sina.com.cn