mbed official / Mbed 2 deprecated TCPEchoClient

TCP Echo Client example

Dependencies:   EthernetInterface mbed-rtos mbed

main.cpp@6:dd8d1cf1cb9c, 2017-02-14 (annotated)

Committer:
mbed_official
Date:
Tue Feb 14 16:43:07 2017 +0000
Revision:
6:dd8d1cf1cb9c
Parent:
3:3fbf0efec25a
Child:
7:88de3c8d25cb
Update libraries. Make example more verbose.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 6:dd8d1cf1cb9c 1 1
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mbed_official 6:dd8d1cf1cb9c 52 52
mbed_official 0:e8f884c94549 53 #include "mbed.h"
emilmont 1:a51d8ed156e6 54 #include "EthernetInterface.h"
mbed_official 6:dd8d1cf1cb9c 55
mbed_official 6:dd8d1cf1cb9c 56 #define ECHO_SERVER_PORT 7
mbed_official 6:dd8d1cf1cb9c 57
mbed_official 6:dd8d1cf1cb9c 58 int main (void) {
emilmont 1:a51d8ed156e6 59 EthernetInterface eth;
emilmont 1:a51d8ed156e6 60 eth.init(); //Use DHCP
emilmont 1:a51d8ed156e6 61 eth.connect();
mbed_official 6:dd8d1cf1cb9c 62 printf("\nServer IP Address is %s\n", eth.getIPAddress());
emilmont 1:a51d8ed156e6 63
mbed_official 6:dd8d1cf1cb9c 64 TCPSocketServer server;
mbed_official 6:dd8d1cf1cb9c 65 server.bind(ECHO_SERVER_PORT);
mbed_official 6:dd8d1cf1cb9c 66 server.listen();
emilmont 1:a51d8ed156e6 67
mbed_official 6:dd8d1cf1cb9c 68 while (true) {
mbed_official 6:dd8d1cf1cb9c 69 printf("\nWait for new connection...\n");
mbed_official 6:dd8d1cf1cb9c 70 TCPSocketConnection client;
mbed_official 6:dd8d1cf1cb9c 71 server.accept(client);
mbed_official 6:dd8d1cf1cb9c 72 client.set_blocking(false, 1500); // Timeout after (1.5)s
mbed_official 6:dd8d1cf1cb9c 73
mbed_official 6:dd8d1cf1cb9c 74 printf("Connection from: %s\n", client.get_address());
mbed_official 6:dd8d1cf1cb9c 75 char buffer[256];
mbed_official 6:dd8d1cf1cb9c 76 while (true) {
mbed_official 6:dd8d1cf1cb9c 77 int n = client.receive(buffer, sizeof(buffer));
mbed_official 6:dd8d1cf1cb9c 78 if (n <= 0) break;
mbed_official 6:dd8d1cf1cb9c 79
mbed_official 6:dd8d1cf1cb9c 80 // print received message to terminal
mbed_official 6:dd8d1cf1cb9c 81 buffer[n] = '\0';
mbed_official 6:dd8d1cf1cb9c 82 printf("Received message from Client :'%s'\n",buffer);
mbed_official 6:dd8d1cf1cb9c 83
mbed_official 6:dd8d1cf1cb9c 84 // reverse the message
mbed_official 6:dd8d1cf1cb9c 85 char temp;
mbed_official 6:dd8d1cf1cb9c 86 for(int f = 0, l = n-1; f<l; f++,l--){
mbed_official 6:dd8d1cf1cb9c 87 temp = buffer[f];
mbed_official 6:dd8d1cf1cb9c 88 buffer[f] = buffer[l];
mbed_official 6:dd8d1cf1cb9c 89 buffer[l] = temp;
mbed_official 6:dd8d1cf1cb9c 90 }
mbed_official 6:dd8d1cf1cb9c 91
mbed_official 6:dd8d1cf1cb9c 92 // print reversed message to terminal
mbed_official 6:dd8d1cf1cb9c 93 printf("Sending message to Client: '%s'\n",buffer);
mbed_official 6:dd8d1cf1cb9c 94
mbed_official 6:dd8d1cf1cb9c 95 // Echo received message back to client
mbed_official 6:dd8d1cf1cb9c 96 client.send_all(buffer, n);
mbed_official 6:dd8d1cf1cb9c 97 if (n <= 0) break;
mbed_official 6:dd8d1cf1cb9c 98 }
mbed_official 6:dd8d1cf1cb9c 99
mbed_official 6:dd8d1cf1cb9c 100 client.close();
mbed_official 6:dd8d1cf1cb9c 101