I'm working with the CC3000 and have encountered a problem where the CC3000 sends unexpected command completion events. The specific case is a SOCKET_CONNECT command completion; the status code is -1. This appears to always happen in response to a SOCKET_ACCEPT command. Generally speaking, simply ignoring the unexpected SOCKET_CONNECT completion results in a SOCKET_ACCEPT completion with an error status, and the next SOCKET_ACCEPT works as expected.
However, I am also seeing unexpected TCP_CLOSE_WAIT events, apparently always after SOCKET_RECV. In this case, the SOCKET_RECV does not complete.
Sample code looks like this - I know it's ugly :-) Taken from a hacked MSP430G2553 demo app
i = wlan_connect(WLAN_SEC_WPA2, "ssid", strlen("ssid"), NULL,
"password", strlen("password"));
while (ulCC3000DHCP == 0)
;
s1 = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
memset(&sa, 0, sizeof(sa));
sa.sin_family = htons(AF_INET);
sa.sin_port = htons(80);
sa.sin_addr.s_addr = htonl(0);
j = bind(s1, (const sockaddr *)&sa, sizeof(sa));
while (1) {
k = listen(s1, 10);
do {
salen = sizeof(si);
} while ((s2 = accept(s1, (sockaddr *) &si, &salen)) == -2);
if (s2 < 0) {
continue;
}
do {
k = recv(s2, &recv_buf, 10, 0); // eat up the HTTP request header
} while (k == 10);
j = send(s2, &send_buf, strlen(send_buf), 0); // send "test" as a response
closesocket(s2);
}
The test system does "while true ; do ; wget http://<ipaddr> ; done" and proceeds as normal for some time until it hangs as mentioned below.
My question is - the 1.11.1 release notes indicate unsolicited connect is handled in the host driver. Yet I do not see an SDK 1.11.1 version with an updated host driver, which may at least resolve the unsolicited connects I'm seeing. I vaguely suspect the unexpected TCP_CLOSE_WAIT event is the result of the CC3000 being confused about the state of an incoming connection - I would only expect to see TCP_CLOSE_WAIT in response to an outbound connection initiated by the CC3000.
I am running 1.24 of the firmware from the 1.11.1 patch programmer.
Is there an updated SDK 1.11.1 host driver source I should try?
