Hi, As suggested, I tired printing logs before and after recv ( ) inside
ns_server_wakeup_ex( ) and ns_server_poll( ).
Observation is that, in ns_server_poll ( ) there are prints getting printed
before and after recv ( ).
However, in ns_server_wakeup_ex( ) the same doesnt happen. Before and After
recv ( ) gets printed untill the case of getting blocked inside recv ( )
occurs.
Hence Polling stops and the message exchange over mg_conn stops.
In my code, currently if i comment recv ( ) inside ns_server_wakeup_ex( ),
everything is working fine.
I have a question here, what is the significance of having recv ( ) inside
ns_server_wakeup_ex( ) ? Because, ns_server_wakeup_ex( ) is called
from mg_wakeup_server_ex ( ), and i call mg_wakeup_server_ex ( ) with a
callback where i write into websocket using mg_websocket_write( ). So If my
job is just to write/ send to websocket , why reading / recv ( ) in
ns_server_wakeup_ex( ) ?
Below is my code,
static int websocket_data_push(struct mg_connection *conn, enum mg_event ev)
{
printf("Inside websocket_data_push \n");
printf("URI %s \n" ,conn->uri);
printf("Sending Event %s \n" ,(char *) conn->callback_param);
if (ev == MG_POLL)
{
if (strcmp(conn->uri, "/web") == 0 && conn->is_websocket) {
printf("Sending Event %s \n" ,(char *) conn->callback_param);
mg_websocket_printf(conn, WEBSOCKET_OPCODE_TEXT, "%s",
(const char *) conn->callback_param);
}
}
return MG_TRUE;
}
...
mg_wakeup_server_ex(mgserver, websocket_data_push, "%lu %s",
(unsigned long) time(NULL), (const char *)
evString);
...
Do you suspect, if return value of callback would matter ?
If yes, then my other cases would not be working fine.
Basically, My code is a mixture of C & C++.
I have mg_wakeup_server_ex( ) called from a member function of Class-A and
callback is a global function to this class.
I have Class-B Class-C and Class-D, doing the job and ultimately framing a
char* response to be sent to client.
So these classes call the method, where mg_wakeup_server_ex ( ) is invoked.
Things work fine Class-B and Class-C. But Class-D which does exactly the
same job, its response gets blocked in recv ( ) . As I said earlier ,
commenting recv ( ) works fine for everything that I expect.
Could you suggest something ?
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