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NuMaker WiFi TCP Example
main.cpp
- Committer:
- cyliang
- Date:
- 2019-12-03
- Revision:
- 26:f5163fee2653
- Parent:
- 24:38e186a10abe
- Child:
- 27:9b7ba5c587da
File content as of revision 26:f5163fee2653:
#include <algorithm> #include "mbed.h" #include "mbed_stats.h" #include "TCPSocket.h" #define MBED_HEAP_STATS_ENABLED 1 #define USE_HTTP_1_1 //#define LOCAL_LAN namespace { // Test connection information #ifndef LOCAL_LAN const char *HTTP_SERVER_NAME = "www.ifconfig.io"; #else const char *HTTP_SERVER_NAME = "pt22_winserver2.nuvoton.com"; #endif #ifndef LOCAL_LAN const char *HTTP_SERVER_FILE_PATH = "/method"; const int HTTP_SERVER_PORT = 80; #else const char *HTTP_SERVER_FILE_PATH = "/examples/arm_mbed/method.txt"; const int HTTP_SERVER_PORT = 8080; #endif const int RECV_BUFFER_SIZE = 512; // Test related data const char *HTTP_OK_STR = "200 OK"; const char *HTTP_EXPECT_STR = "GET"; // Test buffers char buffer[RECV_BUFFER_SIZE] = {0}; } bool find_substring(const char *first, const char *last, const char *s_first, const char *s_last) { const char *f = std::search(first, last, s_first, s_last); return (f != last); } int main() { #if MBED_HEAP_STATS_ENABLED mbed_stats_heap_t heap_stats; #endif printf("Start WiFi test \r\n"); bool result = true; int rc = 0; printf("Start Connection ... \r\n"); NetworkInterface *network_interface = NetworkInterface::get_default_instance(); if (NULL == network_interface) { printf("NULL network interface! Exiting application....\r\n"); return 0; } printf("\n\rUsing WiFi \r\n"); printf("\n\rConnecting to WiFi..\r\n"); rc = network_interface->connect(); if(rc == 0) { printf("\n\rConnected to Network successfully\r\n"); } else { printf("\n\rConnection to Network Failed %d! Exiting application....\r\n", rc); return 0; } printf("TCP client IP Address is %s\r\n", network_interface->get_ip_address()); TCPSocket sock(network_interface); printf(" HTTP Connection ... \r\n"); if (sock.connect(HTTP_SERVER_NAME, HTTP_SERVER_PORT) == 0) { printf("HTTP: Connected to %s:%d\r\n", HTTP_SERVER_NAME, HTTP_SERVER_PORT); // We are constructing GET command like this: #ifndef USE_HTTP_1_1 // GET http://www.ifconfig.io/method HTTP/1.0\n\n strcpy(buffer, "GET http://"); strcat(buffer, HTTP_SERVER_NAME); strcat(buffer, HTTP_SERVER_FILE_PATH); strcat(buffer, " HTTP/1.0\n\n"); #else // GET /method HTTP/1.1\r\nHost: ifconfig.io\r\nConnection: close\r\n\r\n" strcpy(buffer, "GET "); strcat(buffer, HTTP_SERVER_FILE_PATH); strcat(buffer, " HTTP/1.1\r\nHost: "); strcat(buffer, HTTP_SERVER_NAME); strcat(buffer, "\r\nConnection: close\r\n\r\n"); #endif // Send GET command sock.send(buffer, strlen(buffer)); // Server will respond with HTTP GET's success code const int ret = sock.recv(buffer, sizeof(buffer) - 1); buffer[ret] = '\0'; // Find 200 OK HTTP status in reply bool found_200_ok = find_substring(buffer, buffer + ret, HTTP_OK_STR, HTTP_OK_STR + strlen(HTTP_OK_STR)); // Find "deny" string in reply bool found_expect = find_substring(buffer, buffer + ret, HTTP_EXPECT_STR, HTTP_EXPECT_STR + strlen(HTTP_EXPECT_STR)); if (!found_200_ok) result = false; if (!found_expect) result = false; printf("HTTP: Received %d chars from server\r\n", ret); printf("HTTP: Received 200 OK status ... %s\r\n", found_200_ok ? "[OK]" : "[FAIL]"); printf("HTTP: Received '%s' status ... %s\r\n", HTTP_EXPECT_STR, found_expect ? "[OK]" : "[FAIL]"); printf("HTTP: Received massage:\r\n\r\n"); printf("%s", buffer); } #if MBED_HEAP_STATS_ENABLED mbed_stats_heap_get(&heap_stats); printf("Current heap: %lu\r\n", heap_stats.current_size); printf("Max heap size: %lu\r\n", heap_stats.max_size); #endif printf(" Close socket & disconnect ... \r\n"); sock.close(); network_interface->disconnect(); printf(" End \r\n"); }