main.cpp

00001 #include "mbed.h"
00002 #include "EthernetInterface.h"
00003 #include "TCPSocket.h"
00004 
00005 #define USE_HTTP_1_1
00006 //#define LOCAL_LAN
00007 
00008 namespace {
00009     // Test connection information
00010 #ifndef LOCAL_LAN
00011 const char *HTTP_SERVER_NAME = "www.ifconfig.io"; 
00012 #else
00013 const char *HTTP_SERVER_NAME = "pt22_winserver2.nuvoton.com";
00014 #endif
00015 
00016 #ifndef LOCAL_LAN
00017 const char *HTTP_SERVER_FILE_PATH = "/method";
00018 const int HTTP_SERVER_PORT = 80;
00019 #else
00020 const char *HTTP_SERVER_FILE_PATH = "/examples/arm_mbed/method.txt";
00021 const int HTTP_SERVER_PORT = 8080;
00022 #endif
00023 
00024     const int RECV_BUFFER_SIZE = 512;
00025 
00026     // Test related data
00027     const char *HTTP_OK_STR = "200 OK";
00028     const char *HTTP_EXPECT_STR = "GET";
00029 
00030     // Test buffers
00031     char buffer[RECV_BUFFER_SIZE] = {0};
00032 }
00033 
00034 bool find_substring(const char *first, const char *last, const char *s_first, const char *s_last) {
00035     const char *f = std::search(first, last, s_first, s_last);
00036     return (f != last);
00037 }
00038 
00039 int main() {
00040 #if MBED_HEAP_STATS_ENABLED
00041     mbed_stats_heap_t heap_stats;
00042 #endif
00043 
00044 #ifdef MBED_MAJOR_VERSION
00045     printf("Mbed OS version %d.%d.%d\n\n", MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);
00046 #endif
00047     printf("Start TCP test \r\n");
00048 
00049     bool result = true;
00050 
00051     EthernetInterface eth;
00052 
00053     eth.connect(); //Use DHCP
00054 
00055 #if (MBED_MAJOR_VERSION == 6)
00056     static SocketAddress sa;
00057     eth.get_ip_address(&sa);
00058     printf("TCP client IP Address is %s\r\n", sa.get_ip_address());
00059     TCPSocket sock;
00060     sock.open(&eth);
00061 
00062     eth.gethostbyname(HTTP_SERVER_NAME, &sa);
00063     sa.set_port(HTTP_SERVER_PORT);
00064     if (sock.connect(sa) == 0) {    
00065         printf("HTTP: Connected to %s:%d\r\n", HTTP_SERVER_NAME, HTTP_SERVER_PORT);    
00066 #else        
00067     printf("TCP client IP Address is %s\r\n", eth.get_ip_address());
00068 
00069     TCPSocket sock(&eth);
00070    
00071     if (sock.connect(HTTP_SERVER_NAME, HTTP_SERVER_PORT) == 0) {
00072         printf("HTTP: Connected to %s:%d\r\n", HTTP_SERVER_NAME, HTTP_SERVER_PORT);
00073 #endif
00074         // We are constructing GET command like this:
00075 #ifndef USE_HTTP_1_1
00076         // GET http://www.ifconfig.io/method HTTP/1.0\n\n
00077         strcpy(buffer, "GET http://");
00078         strcat(buffer, HTTP_SERVER_NAME);
00079         strcat(buffer, HTTP_SERVER_FILE_PATH);
00080         strcat(buffer, " HTTP/1.0\n\n");
00081 #else
00082        // GET /method HTTP/1.1\r\nHost: ifconfig.io\r\nConnection: close\r\n\r\n"
00083         strcpy(buffer, "GET ");
00084         strcat(buffer, HTTP_SERVER_FILE_PATH);   
00085         strcat(buffer, " HTTP/1.1\r\nHost: ");
00086         strcat(buffer, HTTP_SERVER_NAME);
00087         strcat(buffer, "\r\nConnection: close\r\n\r\n");
00088 #endif
00089         
00090         // Send GET command
00091         sock.send(buffer, strlen(buffer));
00092 
00093         // Server will respond with HTTP GET's success code
00094         const int ret = sock.recv(buffer, sizeof(buffer) - 1);
00095         buffer[ret] = '\0';
00096 
00097         // Find 200 OK HTTP status in reply
00098         bool found_200_ok = find_substring(buffer, buffer + ret, HTTP_OK_STR, HTTP_OK_STR + strlen(HTTP_OK_STR));
00099         // Find "deny" string in reply
00100         bool found_expect = find_substring(buffer, buffer + ret, HTTP_EXPECT_STR, HTTP_EXPECT_STR + strlen(HTTP_EXPECT_STR));
00101 
00102         if (!found_200_ok) result = false;
00103         if (!found_expect) result = false;
00104 
00105         printf("HTTP: Received %d chars from server\r\n", ret);
00106         printf("HTTP: Received 200 OK status ... %s\r\n", found_200_ok ? "[OK]" : "[FAIL]");
00107         printf("HTTP: Received '%s' status ... %s\r\n", HTTP_EXPECT_STR, found_expect ? "[OK]" : "[FAIL]");
00108         printf("HTTP: Received massage:\r\n\r\n");
00109         printf("%s", buffer);
00110     }
00111 
00112     sock.close();
00113     eth.disconnect();
00114 
00115 #if MBED_HEAP_STATS_ENABLED
00116     mbed_stats_heap_get(&heap_stats);
00117     printf("Current heap: %lu\r\n", heap_stats.current_size);
00118     printf("Max heap size: %lu\r\n", heap_stats.max_size);
00119 #endif
00120 }