EthernetInterface, TCP Echo Server, support multi session
Dependencies: EthernetInterface mbed-rtos mbed
Fork of TCPEchoServer by
mbed RTOS により、マルチセッションに対応した TCP Echo Server です。
複数のTCP接続を受付け、処理することができます。
accept の後に fork (スレッドを生成)しています。
main.cpp@7:0a3cf89d5b93, 2013-11-01 (annotated)
- Committer:
- okini3939
- Date:
- Fri Nov 01 05:35:31 2013 +0000
- Revision:
- 7:0a3cf89d5b93
- Parent:
- 3:36fd3cfad85a
- Child:
- 8:46437b951a2f
1st build
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:38cbb854d85f | 1 | #include "mbed.h" |
okini3939 | 7:0a3cf89d5b93 | 2 | #include "rtos.h" |
emilmont | 1:5cebe0e38cd2 | 3 | #include "EthernetInterface.h" |
emilmont | 1:5cebe0e38cd2 | 4 | |
okini3939 | 7:0a3cf89d5b93 | 5 | #define ECHO_SERVER_PORT 10000 |
okini3939 | 7:0a3cf89d5b93 | 6 | |
okini3939 | 7:0a3cf89d5b93 | 7 | #define THREAD_MAX 10 |
okini3939 | 7:0a3cf89d5b93 | 8 | Thread *threads[THREAD_MAX]; |
okini3939 | 7:0a3cf89d5b93 | 9 | |
okini3939 | 7:0a3cf89d5b93 | 10 | void child (void const *arg) { |
okini3939 | 7:0a3cf89d5b93 | 11 | int i; |
okini3939 | 7:0a3cf89d5b93 | 12 | char buf[256]; |
okini3939 | 7:0a3cf89d5b93 | 13 | TCPSocketConnection *client = (TCPSocketConnection*)arg; |
emilmont | 3:36fd3cfad85a | 14 | |
okini3939 | 7:0a3cf89d5b93 | 15 | printf("Connection from %s\r\n", client->get_address()); |
okini3939 | 7:0a3cf89d5b93 | 16 | // client->set_blocking(false, 1500); // Timeout after (1.5)s |
okini3939 | 7:0a3cf89d5b93 | 17 | for (;;) { |
okini3939 | 7:0a3cf89d5b93 | 18 | i = client->receive(buf, sizeof(buf)); |
okini3939 | 7:0a3cf89d5b93 | 19 | if (i < 0) break; |
okini3939 | 7:0a3cf89d5b93 | 20 | if (i == 0) continue; |
okini3939 | 7:0a3cf89d5b93 | 21 | buf[i] = 0; |
okini3939 | 7:0a3cf89d5b93 | 22 | printf("Recv '%s'\r\n", buf); |
okini3939 | 7:0a3cf89d5b93 | 23 | if (client->send(buf, i) < 0) break; |
okini3939 | 7:0a3cf89d5b93 | 24 | } |
okini3939 | 7:0a3cf89d5b93 | 25 | |
okini3939 | 7:0a3cf89d5b93 | 26 | client->close(); |
okini3939 | 7:0a3cf89d5b93 | 27 | printf("Close %s\r\n", client->get_address()); |
okini3939 | 7:0a3cf89d5b93 | 28 | } |
okini3939 | 7:0a3cf89d5b93 | 29 | |
okini3939 | 7:0a3cf89d5b93 | 30 | void parent () { |
okini3939 | 7:0a3cf89d5b93 | 31 | int i, t = 0; |
okini3939 | 7:0a3cf89d5b93 | 32 | TCPSocketConnection *client; |
okini3939 | 7:0a3cf89d5b93 | 33 | |
okini3939 | 7:0a3cf89d5b93 | 34 | for (i = 0; i < THREAD_MAX; i ++) { |
okini3939 | 7:0a3cf89d5b93 | 35 | threads[i] = NULL; |
okini3939 | 7:0a3cf89d5b93 | 36 | } |
okini3939 | 7:0a3cf89d5b93 | 37 | |
emilmont | 1:5cebe0e38cd2 | 38 | TCPSocketServer server; |
emilmont | 3:36fd3cfad85a | 39 | server.bind(ECHO_SERVER_PORT); |
emilmont | 3:36fd3cfad85a | 40 | server.listen(); |
okini3939 | 7:0a3cf89d5b93 | 41 | |
okini3939 | 7:0a3cf89d5b93 | 42 | printf("Wait for new connection...\r\n"); |
okini3939 | 7:0a3cf89d5b93 | 43 | for (;;) { |
okini3939 | 7:0a3cf89d5b93 | 44 | if (t >= 0) { |
okini3939 | 7:0a3cf89d5b93 | 45 | client = new TCPSocketConnection; |
okini3939 | 7:0a3cf89d5b93 | 46 | server.accept(*client); |
okini3939 | 7:0a3cf89d5b93 | 47 | // fork child process |
okini3939 | 7:0a3cf89d5b93 | 48 | threads[t] = new Thread(child, (void*)client); |
okini3939 | 7:0a3cf89d5b93 | 49 | printf("Forked %d\r\n", t); |
emilmont | 1:5cebe0e38cd2 | 50 | } |
emilmont | 3:36fd3cfad85a | 51 | |
okini3939 | 7:0a3cf89d5b93 | 52 | t = -1; |
okini3939 | 7:0a3cf89d5b93 | 53 | for (i = 0; i < THREAD_MAX; i ++) { |
okini3939 | 7:0a3cf89d5b93 | 54 | if (threads[i]) { |
okini3939 | 7:0a3cf89d5b93 | 55 | if (threads[i]->get_state() == Thread::Inactive) { |
okini3939 | 7:0a3cf89d5b93 | 56 | // terminate process |
okini3939 | 7:0a3cf89d5b93 | 57 | // delete threads[i]; |
okini3939 | 7:0a3cf89d5b93 | 58 | // threads[i] = NULL; |
okini3939 | 7:0a3cf89d5b93 | 59 | printf("Terminated %d\r\n", i); |
okini3939 | 7:0a3cf89d5b93 | 60 | } |
okini3939 | 7:0a3cf89d5b93 | 61 | } |
okini3939 | 7:0a3cf89d5b93 | 62 | if (threads[i] == NULL) { |
okini3939 | 7:0a3cf89d5b93 | 63 | if (t < 0) t = i; // empty thread |
okini3939 | 7:0a3cf89d5b93 | 64 | } |
okini3939 | 7:0a3cf89d5b93 | 65 | } |
emilmont | 1:5cebe0e38cd2 | 66 | } |
emilmont | 1:5cebe0e38cd2 | 67 | } |
okini3939 | 7:0a3cf89d5b93 | 68 | |
okini3939 | 7:0a3cf89d5b93 | 69 | |
okini3939 | 7:0a3cf89d5b93 | 70 | int main () { |
okini3939 | 7:0a3cf89d5b93 | 71 | EthernetInterface eth; |
okini3939 | 7:0a3cf89d5b93 | 72 | printf("TCP Echo Server with Fork...\r\n"); |
okini3939 | 7:0a3cf89d5b93 | 73 | eth.init(); //Use DHCP |
okini3939 | 7:0a3cf89d5b93 | 74 | eth.connect(); |
okini3939 | 7:0a3cf89d5b93 | 75 | printf("IP Address is %s\r\n", eth.getIPAddress()); |
okini3939 | 7:0a3cf89d5b93 | 76 | |
okini3939 | 7:0a3cf89d5b93 | 77 | parent(); |
okini3939 | 7:0a3cf89d5b93 | 78 | } |