// Copyright (c) 2021 Cesanta Software Limited // All rights reserved // // Example HTTP client. Connect to `s_url`, send request, wait for a response, // print the response and exit. // You can change `s_url` from the command line by executing: ./example YOUR_URL // // To enable SSL/TLS, make SSL=OPENSSL or make SSL=MBEDTLS #include "sys_config.h" #include "typesdef.h" #include "list.h" #include "dev.h" #include "devid.h" #include "osal/string.h" #include "osal/semaphore.h" #include "osal/mutex.h" #include "osal/irq.h" #include "osal/work.h" #include "osal/sleep.h" #include "osal/timer.h" #include "hal/gpio.h" #include "lib/common/common.h" #include "lib/common/sysevt.h" #include "lib/syscfg/syscfg.h" #include #if HTTPS_CLIENT || HTTP_CLIENT #include "mongoose.h" #include "http_client_demo.h" #include "certs.h" // The very first web page in history. You can replace it from command line #if HTTPS_CLIENT static const char *s_url = "https://example.org/";//AP模式下无法透传上网 #elif HTTP_CLIENT static const char *s_url = "http://192.168.1.100"; #else static const char *s_url = ""; #endif static const char *s_post_data = NULL; // POST data static const uint64_t s_timeout_ms = 1500; // Connect timeout in milliseconds static struct mg_str *get_header_value(struct mg_http_message *hm,const char *name); // Print HTTP response and signal that we're done static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) { if (ev == MG_EV_OPEN) { // Connection created. Store connect expiration time in c->data *(uint64_t *) c->data = mg_millis() + s_timeout_ms; } else if (ev == MG_EV_POLL) { if (mg_millis() > *(uint64_t *) c->data && (c->is_connecting || c->is_resolving)) { mg_error(c, "Connect timeout"); } } else if (ev == MG_EV_CONNECT) { // Connected to server. Extract host name from URL struct mg_str host = mg_url_host(s_url); // If s_url is https://, tell client connection to use TLS if (mg_url_is_ssl(s_url)) { struct mg_tls_opts opts = { //.ca = s_ca, .srvname = host }; mg_tls_init(c, &opts); } // Send request int content_length = s_post_data ? strlen(s_post_data) : 0; mg_printf(c, "%s %s HTTP/1.0\r\n" "Host: %.*s\r\n" "Content-Type: octet-stream\r\n" "Content-Length: %d\r\n" "\r\n", s_post_data ? "POST" : "GET", mg_url_uri(s_url), (int) host.len, host.ptr, content_length); mg_send(c, s_post_data, content_length); } else if (ev == MG_EV_HTTP_MSG) { // Response is received. Print it struct mg_http_message *hm = (struct mg_http_message *) ev_data; get_header_value(hm,"Content-Type"); MG_INFO(("%.*s", (int) hm->message.len, hm->message.ptr)); c->is_closing = 1; // Tell mongoose to close this connection *(bool *) fn_data = true; // Tell event loop to stop } else if (ev == MG_EV_ERROR) { *(bool *) fn_data = true; // Error, tell event loop to stop } } os_task_t http_client_task; int http_client_demo(void *arg) { struct mg_mgr mgr; // Event manager bool done = false; // Event handler flips it to true mg_log_set(MG_LL_DEBUG); // Set to 0 to disable debug mg_mgr_init(&mgr); // Initialise event manager mg_http_connect(&mgr, s_url, fn, &done); // Create client connection while (!done) mg_mgr_poll(&mgr, 50); // Event manager loops until 'done' mg_mgr_free(&mgr); // Free resources return 0; } static sysevt_hdl_res dhcp_client_get_ip(uint32 event_id, uint32 data, uint32 priv) { static uint8_t is_get_ip = 0; printf("%s:%d!!!!!!!!!!!\n",__FUNCTION__,__LINE__); if(!is_get_ip) { is_get_ip = 1; OS_TASK_INIT("http_client_task", &http_client_task, http_client_demo, NULL, OS_TASK_PRIORITY_NORMAL, 20*1024); } return 0; } int http_client_init(uint32 ip) { printf("%s:%d\tip:%s\n",__FUNCTION__,__LINE__,inet_ntoa(ip)); sys_event_take(SYS_EVENT(SYS_EVENT_WIFI, SYSEVT_WIFI_STA_CONNECTTED),dhcp_client_get_ip,0); //if(!ip) //{ // sys_event_take(SYS_EVENT(SYS_EVENT_NETWORK, SYSEVT_LWIP_DHCPC_DONE),dhcp_client_get_ip,0); //} //else //{ // OS_TASK_INIT("http_client_task", &http_client_task, http_client_demo, NULL, OS_TASK_PRIORITY_NORMAL, 10*1024); //} return 0; } static struct mg_str *get_header_value(struct mg_http_message *hm,const char *name) { if (name == NULL) return NULL; struct mg_str *cl; if ((cl = mg_http_get_header(hm, name)) != NULL) { printf("%s--get %s %.*s\r\n", __FILE__, name, (int) cl->len, cl->ptr); return cl; } else { printf("%s--can not get %s %.*s\r\n", __FILE__, name); return NULL; } } #endif