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Demonstrate unexpected interaction between send() and recv()
Revision 0:b380efeccf3a, committed 2016-08-18
- Comitter:
- infinnovation
- Date:
- Thu Aug 18 16:17:35 2016 +0000
- Commit message:
- Initial commit
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
mbed-os.lib | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r b380efeccf3a main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Aug 18 16:17:35 2016 +0000 @@ -0,0 +1,52 @@ +#include "mbed.h" +#include "EthernetInterface.h" + +Serial pc(USBTX, USBRX); +EthernetInterface eth; + +void +s2c_run(TCPSocket *sock) +{ + int ret; + char c; + while (true) { + ret = sock->recv(&c, 1); + if (ret == 1) { + printf("recv %02x=%c\r\n", c, (0x20 <= c && c < 0x7f) ? c : '?'); + } else if (ret == 0) { + printf("EOS\r\n"); + } else { + error("recv: %d\r\n", ret); + } + } +} + +int main(void) +{ + Thread s2c; + int err; + + printf("\r\n== sendrecv ==\r\n"); + err = eth.connect(); + if (err) error("connect: %d\n", err); + printf("ip %s\r\n", eth.get_ip_address()); + TCPServer srv; + err = srv.open(ð); + if (err) error("open: %d\r\n", err); + err = srv.bind(8084); + if (err) error("bind: %d\r\n", err); + err = srv.listen(1); + if (err) error("listen: %d\r\n", err); + TCPSocket sock; + err = srv.accept(&sock); + if (err) error("accept: %d\r\n", err); + printf("accepted connection\r\n"); + s2c.start(Callback<void()>(&sock, s2c_run)); + while (true) { + printf("tick...\r\n"); + err = sock.send("tick\n", 5); + if (err <= 0) error("send: %d\r\n", err); + printf("...sent\r\n"); + wait(1.0); + } +}
diff -r 000000000000 -r b380efeccf3a mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Thu Aug 18 16:17:35 2016 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#0993ae540c5c4b5ce3004bead1aefc0c6d1b3ea0