Paul Staron / Mbed OS TCP-NTP-Server

TCP, NTP and server Ethernet and WI-FI example working on OS5.15

Dependencies:   NTPclient

main.cpp@5:3ef245bbc6ef, 2020-06-13 (annotated)

Committer:
star297
Date:
Sat Jun 13 13:02:54 2020 +0000
Revision:
5:3ef245bbc6ef
Parent:
3:91523db40ebd 
added additional web response code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
star297 0:d2e1b817924d 1 #include "mbed.h"
star297 0:d2e1b817924d 2 #include "NTPclient.h"
star297 5:3ef245bbc6ef 3 #include "favicon_ico.h"
star297 0:d2e1b817924d 4
star297 5:3ef245bbc6ef 5 // define static IP settings
star297 0:d2e1b817924d 6 #define IP "192.168.1.180"
star297 0:d2e1b817924d 7 #define GATEWAY "192.168.1.1"
star297 0:d2e1b817924d 8 #define NETMASK "255.255.255.0"
star297 3:91523db40ebd 9 #define PORT 80
star297 0:d2e1b817924d 10
star297 3:91523db40ebd 11 NetworkInterface *net = NetworkInterface::get_default_instance();
star297 3:91523db40ebd 12 NTPclient ntp(*net);
star297 0:d2e1b817924d 13
star297 0:d2e1b817924d 14 DigitalOut led(LED1);
star297 3:91523db40ebd 15 time_t seconds;
star297 0:d2e1b817924d 16
star297 5:3ef245bbc6ef 17 char requestType[16];
star297 5:3ef245bbc6ef 18 char request[64];
star297 5:3ef245bbc6ef 19
star297 0:d2e1b817924d 20 char *sendbuffer = new char[512]; // create data send buffer space
star297 5:3ef245bbc6ef 21 char recevbuffer[1024]; // create http receive buffer space
star297 0:d2e1b817924d 22
star297 0:d2e1b817924d 23 int main()
star297 3:91523db40ebd 24 {
star297 0:d2e1b817924d 25 printf("\033[0m\033[2J\033[HTCP NTP client and server example\r\n\n\n"); // Tera Term clear screen
star297 3:91523db40ebd 26 seconds = time(NULL);
star297 3:91523db40ebd 27 printf("Initial RTC time: %s\r\n", ctime(&seconds));
star297 3:91523db40ebd 28
star297 3:91523db40ebd 29 // Include to set static IP
star297 3:91523db40ebd 30 int net_static = net->set_network((SocketAddress)IP,(SocketAddress)NETMASK,(SocketAddress)GATEWAY);
star297 0:d2e1b817924d 31
star297 3:91523db40ebd 32 printf("Connecting to network...\n\n");
star297 3:91523db40ebd 33
star297 3:91523db40ebd 34 if (!net) {
star297 3:91523db40ebd 35 printf("No network interface found, select an interface in 'mbed_app.json'\n");
star297 3:91523db40ebd 36 return NULL;
star297 3:91523db40ebd 37 }
star297 3:91523db40ebd 38 nsapi_error_t connect_status = net->connect();
star297 3:91523db40ebd 39 if (connect_status != NSAPI_ERROR_OK) {
star297 3:91523db40ebd 40 printf("Failed to connect to network (%d)\n", connect_status);
star297 3:91523db40ebd 41 return NULL;
star297 3:91523db40ebd 42 }
star297 0:d2e1b817924d 43
star297 3:91523db40ebd 44 SocketAddress net_addr;
star297 3:91523db40ebd 45 net->get_ip_address(&net_addr);
star297 3:91523db40ebd 46 printf("IP address: %s\n", net_addr.get_ip_address() ? net_addr.get_ip_address() : "None");
star297 3:91523db40ebd 47 net->get_netmask(&net_addr);
star297 3:91523db40ebd 48 printf("Netmask: %s\n", net_addr.get_ip_address() ? net_addr.get_ip_address() : "None");
star297 3:91523db40ebd 49 net->get_gateway(&net_addr);
star297 3:91523db40ebd 50 printf("Gateway: %s\n", net_addr.get_ip_address() ? net_addr.get_ip_address() : "None");
star297 3:91523db40ebd 51 printf("MAC: %s\n", net->get_mac_address());
star297 3:91523db40ebd 52
star297 3:91523db40ebd 53 net->get_ip_address(&net_addr);
star297 3:91523db40ebd 54 const char *ip = net_addr.get_ip_address();
star297 3:91523db40ebd 55
star297 0:d2e1b817924d 56 if(ip){
star297 3:91523db40ebd 57 printf("\nConnected\n\nGet NTP time...\n");
star297 5:3ef245bbc6ef 58 if(ntp.getNTP("0.pool.ntp.org",3600,1,1)){
star297 3:91523db40ebd 59 seconds = time(NULL);
star297 3:91523db40ebd 60 printf("RTC time set by NTP: %s\n\n", ctime(&seconds));
star297 0:d2e1b817924d 61 }
star297 3:91523db40ebd 62 else{printf("No NTP could not set RTC !!\n\n");
star297 3:91523db40ebd 63 }
star297 0:d2e1b817924d 64 }else{
star297 0:d2e1b817924d 65 printf("No IP!!\n");
star297 0:d2e1b817924d 66 while(1);
star297 0:d2e1b817924d 67 }
star297 0:d2e1b817924d 68
star297 0:d2e1b817924d 69 TCPSocket srv;
star297 0:d2e1b817924d 70 TCPSocket *client_sock; // srv.accept() will return pointer to socket
star297 0:d2e1b817924d 71 SocketAddress client_addr;
star297 5:3ef245bbc6ef 72
star297 3:91523db40ebd 73 // Open the server on ethernet stack
star297 3:91523db40ebd 74 srv.open(net);
star297 3:91523db40ebd 75 // Bind the HTTP port (TCP 80) to the server
star297 3:91523db40ebd 76 srv.bind(80);
star297 3:91523db40ebd 77 //Can handle x simultaneous connections
star297 5:3ef245bbc6ef 78 srv.listen(5);
star297 0:d2e1b817924d 79
star297 0:d2e1b817924d 80 printf("The Server IP address: '%s'\n", ip);
star297 0:d2e1b817924d 81 printf("Waiting for connection....\r\n\n");
star297 5:3ef245bbc6ef 82
star297 5:3ef245bbc6ef 83 nsapi_size_or_error_t result;
star297 3:91523db40ebd 84
star297 3:91523db40ebd 85 while(1){
star297 3:91523db40ebd 86
star297 3:91523db40ebd 87 client_sock = srv.accept(); //return pointer of a client socket
star297 5:3ef245bbc6ef 88 led=1;
star297 5:3ef245bbc6ef 89 //this will fill address of client to the SocketAddress object
star297 5:3ef245bbc6ef 90 client_sock->getpeername(&client_addr);
star297 5:3ef245bbc6ef 91 printf("\nConnected,Client: %s Port: %d\n", client_addr.get_ip_address(), client_addr.get_port());
star297 5:3ef245bbc6ef 92 //receive client data, (set large enough buffer)
star297 5:3ef245bbc6ef 93 result = client_sock->recv(recevbuffer, 1024);
star297 5:3ef245bbc6ef 94 if (result < 0) {
star297 5:3ef245bbc6ef 95 printf("Error! socket.recv() returned: %d\n", result);
star297 5:3ef245bbc6ef 96 }
star297 5:3ef245bbc6ef 97
star297 5:3ef245bbc6ef 98 if(result){
star297 5:3ef245bbc6ef 99 //printf("Received Msg:\n%s\n\n", recevbuffer); // include to view complete receive buffer
star297 5:3ef245bbc6ef 100 sscanf(recevbuffer,"%s %s",requestType,request);
star297 5:3ef245bbc6ef 101 printf("request: %s Type: %s charcters:%d\n", requestType,request,result);
star297 5:3ef245bbc6ef 102
star297 5:3ef245bbc6ef 103 if(strcmp(request,"/")==0){
star297 5:3ef245bbc6ef 104 //send current mcu rtc time to client
star297 5:3ef245bbc6ef 105 time_t seconds = time(NULL);
star297 5:3ef245bbc6ef 106 sprintf(sendbuffer,"HTTP/1.1 200 OK\n Content-type: text/plain\r\n\r\n <h1> Hello !!</h1>\r\n\n <h1>Time is: %s</h1>\r\n", ctime(&seconds));
star297 5:3ef245bbc6ef 107 printf("Sending Message\n");
star297 5:3ef245bbc6ef 108 result=client_sock->send(sendbuffer, strlen(sendbuffer)); // send data in buffer to http port.
star297 5:3ef245bbc6ef 109 printf("Sent Message, %d bytes\n",result);
star297 5:3ef245bbc6ef 110 }
star297 5:3ef245bbc6ef 111 else if(strcmp(request,"/favicon.ico")==0){
star297 5:3ef245bbc6ef 112 //send favicon if requested
star297 5:3ef245bbc6ef 113 printf("Sending Favicon\n");
star297 5:3ef245bbc6ef 114 result=client_sock->send((char*)favicon_ico,sizeof(favicon_ico));
star297 5:3ef245bbc6ef 115 printf("Sent Favicon, %d bytes\n",result);
star297 5:3ef245bbc6ef 116 }
star297 5:3ef245bbc6ef 117 else{
star297 5:3ef245bbc6ef 118 // send page not found reply
star297 5:3ef245bbc6ef 119 sprintf(sendbuffer,"HTTP/1.1 404 Not Found\nContent-type: text/plain\r\n\r\npage not found");
star297 5:3ef245bbc6ef 120 printf("Sending Not Found Message\n");
star297 5:3ef245bbc6ef 121 result=client_sock->send(sendbuffer, strlen(sendbuffer));
star297 5:3ef245bbc6ef 122 printf("Sent Not Found Message, %d bytes\n",result);
star297 5:3ef245bbc6ef 123 }
star297 5:3ef245bbc6ef 124 }
star297 5:3ef245bbc6ef 125 else{
star297 5:3ef245bbc6ef 126 printf("Disconnected\n");
star297 5:3ef245bbc6ef 127 }
star297 5:3ef245bbc6ef 128 //close socket
star297 5:3ef245bbc6ef 129 client_sock->close();
star297 3:91523db40ebd 130 led=0;
star297 0:d2e1b817924d 131 }
star297 0:d2e1b817924d 132 }