httpclient

#include<stdio.h> #include <unistd.h> #include<fcntl.h> #include<netdb.h> #include<stdlib.h> #include "httpclient.h" #include<string.h> #include<sys/types.h> #include<sys/socket.h> #include <netinet/in.h> const char * http_s = "http://"; typedef struct{ char *url; int port; char *host; char *anyurl; int isip; }Hostinfo; int isip(const char * s){            while( *s ){                  if(isalpha(*s) && *s != '.')                   {                          return 0;                   }                         s++;             }                            return 1;            } int gethostinfobyurl(const char * url, char ** host, int *port, char ** anyurl) { if(url == NULL || 0!=strncmp(url, http_s, strlen(http_s)) ){ printf("url is not legal, %s\n", url); return -1; } char * h_url = strstr(url,"//"); h_url = h_url + 2; *anyurl= strchr(h_url,'/'); printf("hurl: %s\n",h_url); if(anyurl != NULL){ char cc[1024]; char *pcc = cc; strcpy(cc,h_url); h_url = strsep(&pcc,"/"); printf("hhurl:%s\n",h_url); } if(NULL !=strchr(h_url,':')){ *host = strsep(&h_url,":"); char *cport = strsep(&h_url,":"); *port = atoi(cport); } else{ *host = h_url; } return 0; } void datas(int fp,Hostinfo *hinfo){ char request[1024]; bzero(&request,1024); //sprintf(request,"GET %s  HTTP/1.1\r\nHost:  61.135.169.125:80\r\nConnection:   Close\r\n\r\n","/"); sprintf(request,   "GET   %s   HTTP/1.1\r\nAccept:   */*\r\nAccept-Language:   zh-cn\r\n\ Host:  %s:%d\r\nConnection:   Close\r\n\r\n ", hinfo->anyurl,hinfo->host,hinfo->port); printf("\n\n"); printf("%s",request); printf("\n\n"); printf("request is %s\n", request); int send = write(fp, request,strlen(request)); if(send == -1){ printf("send error\n"); exit(1); } printf("send num: %d\n", send); int BUFFER_SIZE = 2048; char buffer[BUFFER_SIZE]; int length; bzero(&buffer, BUFFER_SIZE);         length = read(fp,buffer,BUFFER_SIZE); char * content = buffer; if(length <=0){ printf("error! read http return content!"); //return NULL; } char * head = strsep(&content,"\r\n"); printf("head:%s\n",head); strsep(&head," "); printf("1-->>head:%s\n",head); if(head == NULL){ printf("error! read http return content!"); return; } head = strsep(&head," "); printf("2-->>head:%s\n",head); int result = atoi(head); if(result == 200){ printf("success\n"); } /*while( length = read(fp,buffer,BUFFER_SIZE)){ if(length <=0){ return ; } bzero(&buffer,1024); } */ } int connect_http(Hostinfo * hinfo) { int cfd; struct sockaddr_in s_add;         struct sockaddr_in * sinp; struct addrinfo hint; struct addrinfo *ailist, *aip; int i = 0, err; char seraddr[128]; printf(" hinfo->host: %s\n", hinfo->host);    if(!(hinfo -> isip)){   hint.ai_family = AF_INET;   hint.ai_socktype = SOCK_STREAM;   hint.ai_flags = AI_CANONNAME;   hint.ai_protocol = 0;   hint.ai_addrlen = 0;   hint.ai_addr = NULL;   hint.ai_canonname = NULL;   hint.ai_next = NULL; char name[1024]; strcpy(name, hinfo->host);       if ((err = getaddrinfo(name, NULL, &hint, &ailist)) != 0) {           printf("getaddrinfo error: %s host :%s\n", gai_strerror(err), hinfo->host);           exit(-1);        } for (aip = ailist; i==0 && aip != NULL; aip = aip->ai_next) {    sinp = (struct sockaddr_in *)aip->ai_addr; //break;         i = i+1; if (inet_ntop(sinp->sin_family, &sinp->sin_addr, seraddr, INET_ADDRSTRLEN) != NULL)                {                     printf("\nserver address is %s\n", seraddr);                }     } } else{ strcpy(seraddr,hinfo->host); } cfd = socket(AF_INET,SOCK_STREAM,0); if(cfd == -1){ printf("socket error\n"); return -1; }  struct timeval timeo = {3, 0}; socklen_t len = sizeof(timeo); setsockopt(cfd, SOL_SOCKET, SO_SNDTIMEO, &timeo, len); bzero(&s_add, sizeof(struct sockaddr_in)); s_add.sin_family=AF_INET;   s_add.sin_addr.s_addr= inet_addr(seraddr);    s_add.sin_port=htons(hinfo->port);   if(-1 == connect(cfd,(struct sockaddr *)(&s_add), sizeof(struct sockaddr)))   {       printf("connect fail !\r\n");       return -1;   }     // int flags = fcntl(cfd, F_GETFL, 0);                       //設置異步        //fcntl(cfd, F_SETFL, flags | O_NONBLOCK);   printf("connect ok !\r\n"); datas(cfd,hinfo); close(cfd); return 1; } char *  get(const char * url) { char * host = (char *)malloc(200); char * curl = (char *)malloc(200); int port = 80; int *cport = &port; int result = gethostinfobyurl(url,&host,cport,&curl); if(result < 0){ return NULL; } printf("parase host:%s\n",host); Hostinfo *hinfo = (Hostinfo*)calloc(1,sizeof(Hostinfo)); hinfo->port = port; hinfo->host = host; hinfo->anyurl = curl; hinfo->isip = isip(hinfo->host); connect_http(hinfo); return NULL; } int main() { const char * url = "http://news.sohu.com/s2013/dianji-1243/"; /* char * host = (char *)malloc(200); char * curl = (char *)malloc(200); int port = 80; int *cport = &port; gethostinfobyurl(url,&host,cport,&curl); printf("host:%s \t address: %s\n",host,curl); printf("port : %d\n",port); */ get(url); return 0; }