TCP Echo Client example
Dependencies: EthernetInterface mbed-rtos mbed
main.cpp@7:88de3c8d25cb, 2017-02-14 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Feb 14 16:45:07 2017 +0000
- Revision:
- 7:88de3c8d25cb
- Parent:
- 6:dd8d1cf1cb9c
Remove line numbers.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:e8f884c94549 | 1 | #include "mbed.h" |
emilmont | 1:a51d8ed156e6 | 2 | #include "EthernetInterface.h" |
mbed_official | 6:dd8d1cf1cb9c | 3 | |
mbed_official | 6:dd8d1cf1cb9c | 4 | #define ECHO_SERVER_PORT 7 |
mbed_official | 6:dd8d1cf1cb9c | 5 | |
mbed_official | 6:dd8d1cf1cb9c | 6 | int main (void) { |
emilmont | 1:a51d8ed156e6 | 7 | EthernetInterface eth; |
emilmont | 1:a51d8ed156e6 | 8 | eth.init(); //Use DHCP |
emilmont | 1:a51d8ed156e6 | 9 | eth.connect(); |
mbed_official | 6:dd8d1cf1cb9c | 10 | printf("\nServer IP Address is %s\n", eth.getIPAddress()); |
emilmont | 1:a51d8ed156e6 | 11 | |
mbed_official | 6:dd8d1cf1cb9c | 12 | TCPSocketServer server; |
mbed_official | 6:dd8d1cf1cb9c | 13 | server.bind(ECHO_SERVER_PORT); |
mbed_official | 6:dd8d1cf1cb9c | 14 | server.listen(); |
emilmont | 1:a51d8ed156e6 | 15 | |
mbed_official | 6:dd8d1cf1cb9c | 16 | while (true) { |
mbed_official | 6:dd8d1cf1cb9c | 17 | printf("\nWait for new connection...\n"); |
mbed_official | 6:dd8d1cf1cb9c | 18 | TCPSocketConnection client; |
mbed_official | 6:dd8d1cf1cb9c | 19 | server.accept(client); |
mbed_official | 6:dd8d1cf1cb9c | 20 | client.set_blocking(false, 1500); // Timeout after (1.5)s |
mbed_official | 6:dd8d1cf1cb9c | 21 | |
mbed_official | 6:dd8d1cf1cb9c | 22 | printf("Connection from: %s\n", client.get_address()); |
mbed_official | 6:dd8d1cf1cb9c | 23 | char buffer[256]; |
mbed_official | 6:dd8d1cf1cb9c | 24 | while (true) { |
mbed_official | 6:dd8d1cf1cb9c | 25 | int n = client.receive(buffer, sizeof(buffer)); |
mbed_official | 6:dd8d1cf1cb9c | 26 | if (n <= 0) break; |
mbed_official | 6:dd8d1cf1cb9c | 27 | |
mbed_official | 6:dd8d1cf1cb9c | 28 | // print received message to terminal |
mbed_official | 6:dd8d1cf1cb9c | 29 | buffer[n] = '\0'; |
mbed_official | 6:dd8d1cf1cb9c | 30 | printf("Received message from Client :'%s'\n",buffer); |
mbed_official | 6:dd8d1cf1cb9c | 31 | |
mbed_official | 6:dd8d1cf1cb9c | 32 | // reverse the message |
mbed_official | 6:dd8d1cf1cb9c | 33 | char temp; |
mbed_official | 6:dd8d1cf1cb9c | 34 | for(int f = 0, l = n-1; f<l; f++,l--){ |
mbed_official | 6:dd8d1cf1cb9c | 35 | temp = buffer[f]; |
mbed_official | 6:dd8d1cf1cb9c | 36 | buffer[f] = buffer[l]; |
mbed_official | 6:dd8d1cf1cb9c | 37 | buffer[l] = temp; |
mbed_official | 6:dd8d1cf1cb9c | 38 | } |
mbed_official | 6:dd8d1cf1cb9c | 39 | |
mbed_official | 6:dd8d1cf1cb9c | 40 | // print reversed message to terminal |
mbed_official | 6:dd8d1cf1cb9c | 41 | printf("Sending message to Client: '%s'\n",buffer); |
mbed_official | 6:dd8d1cf1cb9c | 42 | |
mbed_official | 6:dd8d1cf1cb9c | 43 | // Echo received message back to client |
mbed_official | 6:dd8d1cf1cb9c | 44 | client.send_all(buffer, n); |
mbed_official | 6:dd8d1cf1cb9c | 45 | if (n <= 0) break; |
mbed_official | 6:dd8d1cf1cb9c | 46 | } |
mbed_official | 6:dd8d1cf1cb9c | 47 | |
mbed_official | 6:dd8d1cf1cb9c | 48 | client.close(); |
mbed_official | 6:dd8d1cf1cb9c | 49 |