diff options
Diffstat (limited to 'tool/mbed/mbed-sdk/libraries/tests/net/echo/udp_link_layer/main.cpp')
-rw-r--r-- | tool/mbed/mbed-sdk/libraries/tests/net/echo/udp_link_layer/main.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/tool/mbed/mbed-sdk/libraries/tests/net/echo/udp_link_layer/main.cpp b/tool/mbed/mbed-sdk/libraries/tests/net/echo/udp_link_layer/main.cpp new file mode 100644 index 0000000000..3e40499dfa --- /dev/null +++ b/tool/mbed/mbed-sdk/libraries/tests/net/echo/udp_link_layer/main.cpp @@ -0,0 +1,151 @@ +#include "mbed.h" +#include "rtos.h" +#include "EthernetInterface.h" +#include <list> +#include <string> + +/** +* How to use: +* make.py -m LPC1768 -t ARM -d E:\ -n NET_14 +* udp_link_layer_auto.py -p COM20 -d E:\ -t 10 +*/ + +// Evil globals +namespace { + // IP and port used to store HOST address info + char host_address[32] = {0}; + volatile int host_port = 0; + + const int ECHO_SERVER_PORT = 7; + const int BUFFER_SIZE = 64; + + // Forwarding packet queue + std::list<std::string> datagram_queue; + + // Statistics (mbed) + volatile int received_packets = 0; + volatile int forwarded_packets = 0; + volatile int max_queue_len = 0; + + Mutex cli_serv_mutex; + // cli_serv_mutex.lock(); // LOCK + // cli_serv_mutex.unlock(); // LOCK +} + +void udp_server_task(void const *argument) +{ + DigitalOut indicator(LED1); + UDPSocket server; + + server.bind(ECHO_SERVER_PORT); + // printf("[udp_server_task] Start\r\n"); + + Endpoint client; + char buffer[BUFFER_SIZE] = { 0 }; + while (true) { + //printf("[udp_server_task] Wait for packet...\r\n"); + int n = server.receiveFrom(client, buffer, sizeof(buffer)); + if (n > 0) { + //printf("[udp_server_task] Received packet from: %s\r\n", client.get_address()); + const int buffer_string_end_index = n >= BUFFER_SIZE ? BUFFER_SIZE - 1 : n; + buffer[buffer_string_end_index] = '\0'; + //printf("[udp_server_task] Server received: %s\r\n", buffer); + if (host_port == 0) { + strcpy(host_address, client.get_address()); + host_port = ECHO_SERVER_PORT + 1; + //printf("[udp_server_task] Set host address and port: %s:%d\r\n", host_address, host_port); + } + // Dispatch data to client for sending to test HOST + cli_serv_mutex.lock(); // LOCK + // Push to datagram queue + datagram_queue.push_front(std::string(buffer)); + max_queue_len = datagram_queue.size() > max_queue_len ? datagram_queue.size() : max_queue_len; + received_packets++; + cli_serv_mutex.unlock(); // LOCK + indicator = !indicator; + } + } +} + +void udp_client_task(void const *argument) +{ + while (host_port == 0) { + // Waiting for HOST port notification + } + + DigitalOut indicator(LED2); + UDPSocket socket; + socket.init(); + + Endpoint echo_server; + echo_server.set_address(host_address, host_port); + //printf("[udp_client_task] Start: %s:%d\r\n", host_address, host_port); + + while (1) { + std::string datagram; + bool sent_datagram = false; + cli_serv_mutex.lock(); // LOCK + if (datagram_queue.size() > 0) { + // POP from datagram queue + datagram = datagram_queue.back(); + datagram_queue.pop_back(); + sent_datagram = true; + } + cli_serv_mutex.unlock(); // LOCK + if (sent_datagram) { + //printf("[udp_client_task] Forwarded datagram: %s\r\n", datagram.c_str()); + socket.sendTo(echo_server, (char *)datagram.c_str(), datagram.length()); + forwarded_packets++; + indicator = !indicator; + } + } +} + +int main(void) +{ + EthernetInterface eth; + + eth.init(); //Use DHCP + eth.connect(); + printf("MBED: Server IP Address is %s:%d\r\n", eth.getIPAddress(), ECHO_SERVER_PORT); + + Thread UdpServerTask(udp_server_task, NULL, osPriorityNormal, DEFAULT_STACK_SIZE * 2.25); + Thread UdpClientTask(udp_client_task, NULL, osPriorityNormal, DEFAULT_STACK_SIZE * 2.25); + + // Control TCP server to get MBED statistics + { + char buffer[BUFFER_SIZE] = {0}; + const int TELNET_SERVER_PORT = 23; + const int BUFFER_SIZE = 256; + TCPSocketServer server; + server.bind(TELNET_SERVER_PORT); + server.listen(); + + while (true) { + printf("MBED: Wait for new connection...\r\n"); + TCPSocketConnection client; + server.accept(client); + client.set_blocking(false, 1500); // Timeout after (1.5)s + printf("MBED: Connection from: %s\r\n", client.get_address()); + + while (true) { + int n = client.receive(buffer, sizeof(buffer)); + //if (n <= 0) break; + if (n > 0) { + // printf("Recv %d chars\r\n", n); + const int buffer_string_end_index = n >= BUFFER_SIZE ? BUFFER_SIZE - 1 : n; + buffer[buffer_string_end_index] = '\0'; + // client.send_all(buffer, strlen(buffer)); + if (strncmp(buffer, "stat", 4) == 0) { + sprintf(buffer, "received_packets %d\nforwarded_packets %d\nmax_queue_len %d", + received_packets, forwarded_packets, max_queue_len); + client.send_all(buffer, strlen(buffer)); + // printf("%s", buffer); + } + } + //if (n <= 0) break; + } + client.close(); + } + } +} |