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Linux http post 请求 实例

2019-07-12 19:01发布

站内文章 / 嵌入式Linux
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#include
#include
#include "../include/tuobao_tcpclient.h"






int http_post(tuobao_tcpclient *pclient,char *page,char *request,char **response){


    char post[300],host[100],content_len[100];
    char *lpbuf,*ptmp;
    int len=0;
int err=0;
    lpbuf = NULL;
    const char *header2="User-Agent: Tuobao Http 0.1 Cache-Control: no-cache Content-Type: application/x-www-form-urlencoded Accept: */* ";


    sprintf(post,"POST %s HTTP/1.0 ",page);
    sprintf(host,"HOST: %s:%d ",pclient->remote_ip,pclient->remote_port);
    sprintf(content_len,"Content-Length: %d ",(int)strlen(request));


    len = strlen(post)+strlen(host)+strlen(header2)+strlen(content_len)+strlen(request)+1;
    lpbuf = (char*)malloc(len);
    if(lpbuf==NULL){
        return -1;
    }


    strcpy(lpbuf,post);
    strcat(lpbuf,host);
    strcat(lpbuf,header2);
    strcat(lpbuf,content_len);
    strcat(lpbuf,request);


    if(!pclient->connected){
        err=tuobao_tcpclient_conn(pclient);
if(err<0) return -1;
    }


    if(tuobao_tcpclient_send(pclient,lpbuf,len)<0){
        return -1;
    }
printf("send request: %s ",lpbuf);


    /*释放内存*/
    if(lpbuf != NULL) free(lpbuf);
    lpbuf = NULL;


    /*it's time to recv from server*/
    if(tuobao_tcpclient_recv(pclient,&lpbuf,0) <= 0){
        if(lpbuf) free(lpbuf);
        return -2;
    }
printf("receive repose: %s ",lpbuf);


    /*响应代码,|HTTP/1.0 200 OK|
     *从第10个字符开始,第3位
     * */
    memset(post,0,sizeof(post));
    strncpy(post,lpbuf+9,3);
    if(atoi(post)!=200){
        if(lpbuf) free(lpbuf);
        return atoi(post);
    }

    ptmp = (char*)strstr(lpbuf," ");
    if(ptmp == NULL){
        free(lpbuf);
        return -3;
    }
    ptmp += 4;/*跳过 */


    len = strlen(ptmp)+1;
    *response=(char*)malloc(len);
    if(*response == NULL){
        if(lpbuf) free(lpbuf);
        return -1;
    }
    memset(*response,0,len);
    memcpy(*response,ptmp,len-1);


    /*从头域找到内容长度,如果没有找到则不处理*/
    ptmp = (char*)strstr(lpbuf,"Content-Length:");
    if(ptmp != NULL){
        char *ptmp2;
        ptmp += 15;
        ptmp2 = (char*)strstr(ptmp," ");
        if(ptmp2 != NULL){
            memset(post,0,sizeof(post));
            strncpy(post,ptmp,ptmp2-ptmp);
            if(atoi(post)                 (*response)[atoi(post)] = '

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