esp8266 http

#include "espconn.h"
#include "mem.h"

#define NET_DOMAIN "baidu.com"
#define pheadbuffer "GET / HTTP/1.1\r\nUser-Agent: curl/7.37.0\r\nHost: %s\r\nAccept: */*\r\n\r\n"

#define packet_size (2 * 1024)

LOCAL os_timer_t test_timer;
LOCAL struct espconn user_tcp_conn;
LOCAL struct _esp_tcp user_tcp;
ip_addr_t tcp_server_ip;

/******************************************************************************
* FunctionName : user_tcp_recv_cb
* Description : receive callback.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_tcp_recv_cb(void *arg, char *pusrdata, unsigned short length)
{
//received some data from tcp connection

os_printf("tcp recv !!! %s \r\n", pusrdata);

}
/******************************************************************************
* FunctionName : user_tcp_sent_cb
* Description : data sent callback.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_tcp_sent_cb(void *arg)
{
//data sent successfully

os_printf("tcp sent succeed !!! \r\n");
}
/******************************************************************************
* FunctionName : user_tcp_discon_cb
* Description : disconnect callback.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_tcp_discon_cb(void *arg)
{
//tcp disconnect successfully

os_printf("tcp disconnect succeed !!! \r\n");
}
/******************************************************************************
* FunctionName : user_esp_platform_sent
* Description : Processing the application data and sending it to the host
* Parameters : pespconn -- the espconn used to connetion with the host
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_sent_data(struct espconn *pespconn)
{
char *pbuf = (char *)os_zalloc(packet_size);

os_sprintf(pbuf, pheadbuffer, NET_DOMAIN);

espconn_sent(pespconn, pbuf, os_strlen(pbuf));

os_free(pbuf);

}

/******************************************************************************
* FunctionName : user_tcp_connect_cb
* Description : A new incoming tcp connection has been connected.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_tcp_connect_cb(void *arg)
{
struct espconn *pespconn = arg;

os_printf("connect succeed !!! \r\n");

espconn_regist_recvcb(pespconn, user_tcp_recv_cb);
espconn_regist_sentcb(pespconn, user_tcp_sent_cb);
espconn_regist_disconcb(pespconn, user_tcp_discon_cb);

user_sent_data(pespconn);
}

/******************************************************************************
* FunctionName : user_tcp_recon_cb
* Description : reconnect callback, error occured in TCP connection.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_tcp_recon_cb(void *arg, sint8 err)
{
//error occured , tcp connection broke. user can try to reconnect here.

os_printf("reconnect callback, error code %d !!! \r\n",err);
}

#ifdef DNS_ENABLE
/******************************************************************************
* FunctionName : user_dns_found
* Description : dns found callback
* Parameters : name -- pointer to the name that was looked up.
* ipaddr -- pointer to an ip_addr_t containing the IP address of
* the hostname, or NULL if the name could not be found (or on any
* other error).
* callback_arg -- a user-specified callback argument passed to
* dns_gethostbyname
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
{
struct espconn *pespconn = (struct espconn *)arg;

if (ipaddr == NULL)
{
os_printf("user_dns_found NULL \r\n");
return;
}

//dns got ip
os_printf("user_dns_found %d.%d.%d.%d \r\n",
*((uint8 *)&ipaddr->addr), *((uint8 *)&ipaddr->addr + 1),
*((uint8 *)&ipaddr->addr + 2), *((uint8 *)&ipaddr->addr + 3));

if (tcp_server_ip.addr == 0 && ipaddr->addr != 0)
{
// dns succeed, create tcp connection
os_timer_disarm(&test_timer);
tcp_server_ip.addr = ipaddr->addr;
os_memcpy(pespconn->proto.tcp->remote_ip, &ipaddr->addr, 4); // remote ip of tcp server which get by dns

pespconn->proto.tcp->remote_port = 80; // remote port of tcp server

pespconn->proto.tcp->local_port = espconn_port(); //local port of ESP8266

espconn_regist_connectcb(pespconn, user_tcp_connect_cb); // register connect callback
espconn_regist_reconcb(pespconn, user_tcp_recon_cb); // register reconnect callback as error handler

espconn_connect(pespconn); // tcp connect
}
}

/******************************************************************************
* FunctionName : user_esp_platform_dns_check_cb
* Description : 1s time callback to check dns found
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR
user_dns_check_cb(void *arg)
{
struct espconn *pespconn = arg;

espconn_gethostbyname(pespconn, NET_DOMAIN, &tcp_server_ip, user_dns_found); // recall DNS function

os_timer_arm(&test_timer, 1000, 0);
}
#endif
/******************************************************************************
* FunctionName : user_check_ip
* Description : check whether get ip addr or not
* Parameters : none
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
user_check_ip(void)
{
struct ip_info ipconfig;

//disarm timer first
os_timer_disarm(&test_timer);

//get ip info of ESP8266 station
wifi_get_ip_info(STATION_IF, &ipconfig);

if (wifi_station_get_connect_status() == STATION_GOT_IP && ipconfig.ip.addr != 0)
{
os_printf("got ip !!! \r\n");

// Connect to tcp server as NET_DOMAIN
user_tcp_conn.proto.tcp = &user_tcp;
user_tcp_conn.type = ESPCONN_TCP;
user_tcp_conn.state = ESPCONN_NONE;

#ifdef DNS_ENABLE
tcp_server_ip.addr = 0;
espconn_gethostbyname(&user_tcp_conn, NET_DOMAIN, &tcp_server_ip, user_dns_found); // DNS function

os_timer_setfn(&test_timer, (os_timer_func_t *)user_dns_check_cb, user_tcp_conn);
os_timer_arm(&test_timer, 1000, 0);
#else

const char esp_tcp_server_ip[4] = {X, X, X, X}; // remote IP of TCP server

os_memcpy(user_tcp_conn.proto.tcp->remote_ip, esp_tcp_server_ip, 4);

user_tcp_conn.proto.tcp->remote_port = XXXX; // remote port

user_tcp_conn.proto.tcp->local_port = espconn_port(); //local port of ESP8266

espconn_regist_connectcb(&user_tcp_conn, user_tcp_connect_cb); // register connect callback
espconn_regist_reconcb(&user_tcp_conn, user_tcp_recon_cb); // register reconnect callback as error handler
espconn_connect(&user_tcp_conn);

#endif
}
else
{

if ((wifi_station_get_connect_status() == STATION_WRONG_PASSWORD ||
wifi_station_get_connect_status() == STATION_NO_AP_FOUND ||
wifi_station_get_connect_status() == STATION_CONNECT_FAIL))
{
os_printf("connect fail !!! \r\n");
}
else
{
//re-arm timer to check ip
os_timer_setfn(&test_timer, (os_timer_func_t *)user_check_ip, NULL);
os_timer_arm(&test_timer, 100, 0);
}
}
}

/******************************************************************************
* FunctionName : user_set_station_config
* Description : set the router info which ESP8266 station will connect to
* Parameters : none
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
user_set_station_config(void)
{
// Wifi configuration
char ssid[32] = SSID;
char password[64] = PASSWORD;
struct station_config stationConf;

//need not mac address
stationConf.bssid_set = 0;

//Set ap settings
os_memcpy(&stationConf.ssid, ssid, 32);
os_memcpy(&stationConf.password, password, 64);
wifi_station_set_config(&stationConf);

//set a timer to check whether got ip from router succeed or not.
os_timer_disarm(&test_timer);
os_timer_setfn(&test_timer, (os_timer_func_t *)user_check_ip, NULL);
os_timer_arm(&test_timer, 100, 0);

}

/******************************************************************************
* FunctionName : user_init
* Description : entry of user application, init user function here
* Parameters : none
* Returns : none
*******************************************************************************/
void user_init(void)
{
os_printf("SDK version:%s\n", system_get_sdk_version());

//Set softAP + station mode
wifi_set_opmode(STATIONAP_MODE);

//ESP8266 connect to router
user_set_station_config();

}

刚才http请求了下网易的页面，原来服务器用的开源的nginx

百度查到的：Nginx是一款轻量级的Web 服务器/反向代理服务器及电子邮件（IMAP/POP3）代理服务器，并在一个BSD-like 协议下发行。由俄罗斯的程序设计师Igor Sysoev所开发，供俄国大型的入口网站及搜索引擎Rambler（俄文：Рамблер）使用。其特点是占有内存少，并发能力强，事实上nginx的并发能力确实在同类型的网页服务器中表现较好，中国大陆使用nginx网站用户有：京东、新浪、网易、腾讯、淘宝等。

楼主你好，最近要搞esp8266的webservice，把您有关的帖子都过了一遍，这边看到大多数都是直接开发固件，想问下您有通过at指令配合官方固件开发的经验吗

这个AT，我基本不用

楼主好看见这个帖子我兴奋并激动着。想请教您如何让一个小白看懂这样的程序？

不好意思，我的帖子从来就不是写给小白看得，需要有一定基础的才看得懂。