HTTP communication: get pictures in JSON format and convert them to download

# include

# include

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# include

# include "cJSON.h"

/ / http://image.baidu.com/channel/listjson?pn=0&rn=30&tag1=%E7%BE%8E%E5%A5%B3&tag2=%E5%85%A8%E9%83%A8&ie=utf8

# define HTTP_REQ "GET / channel/listjson?pn=0&rn=3&tag1=%E7%BE%8E%E5%A5%B3&tag2=%E5%85%A8%E9%83%A8&ie=utf8\"

HTTP/1.1\ r\ nHost: image.baidu.com\ r\ nConnection: close\ r\ n\ n "

/ * https://cache.yisu.com/upload/information/20200302/31/2616.jpg

Https://cache.yisu.com/upload/information/20200302/31/2617.jpg

Https://cache.yisu.com/upload/information/20200302/31/2620.jpg * /

# define HTTP_REQ_PIC "GET / image/pic/item/%s HTTP/1.1\ r\ nHost:% s\ r\ nConnection: close\ r\ n\ r\ n"

Void * download_run (void * arg)

{

Char * t = (char *) arg

Char buf [strlen (t) + 1]

Memcpy (buf, t, strlen (t) + 1)

Char www [64] = {0}

Char pic [128] = {0}

Sscanf (buf, "http://%[^/]/image/pic/item/%s", www, pic)

Printf ("% s murmuri% s\ n", www, pic)

Char requstbuffer [1024] = {0}

Sprintf (requstbuffer, HTTP_REQ_PIC, pic, www)

/ / 1. Connect to the server

Int sockfd = socket (AF_INET, SOCK_STREAM, 0)

If (sockfd < 0)

{

Return NULL

}

Struct sockaddr_in saddr

Bzero (& saddr, sizeof (saddr))

Saddr.sin_family = AF_INET

Saddr.sin_port = htons (80); / / Server port number

Saddr.sin_addr.s_addr = inet_addr ("119.146.74.48"); / / server address

Int ret = connect (sockfd, (struct sockaddr*) & saddr, sizeof (saddr))

If (ret < 0)

{

Perror ("connect fail")

}

/ / 2. Send http request

Write (sockfd, requstbuffer, strlen (requstbuffer))

Char buffer [1024] = {0}

Char * p = malloc (10240300)

Char * Q = p

Unsigned int recvsize = 0

While (1)

{

Int ret = read (sockfd, buffer, 1024)

If (ret