/* This will immediately close a server socket and clean out any pending
* requests that are waiting on that socket.
* */
void force_disconnect(jsonrpc_server_t* server)
{
if(!server) {
ERR("Trying to disconnect a NULL server.\n");
return;
}
// clear the netstring buffer when disconnecting
free_netstring(server->buffer);
server->buffer = NULL;
server->status = JSONRPC_SERVER_DISCONNECTED;
// close bufferevent
bev_disconnect(server->bev);
INFO("Disconnected from server %.*s:%d for conn %.*s.\n",
STR(server->addr), server->port, STR(server->conn));
/* clean out requests */
jsonrpc_request_t* req = NULL;
int key = 0;
for (key=0; key < JSONRPC_DEFAULT_HTABLE_SIZE; key++) {
for (req = request_table[key]; req != NULL; req = req->next) {
if(req->server != NULL && req->server == server) {
fail_request(JRPC_ERR_SERVER_DISCONNECT, req,
"Failing request for server shutdown");
}
}
}
}
void bev_read_cb(struct bufferevent* bev, void* arg)
{
jsonrpc_server_t* server = (jsonrpc_server_t*)arg;
int retval = 0;
while (retval == 0) {
int retval = netstring_read_evbuffer(bev, &server->buffer);
if (retval == NETSTRING_INCOMPLETE) {
return;
} else if (retval < 0) {
char* msg = "";
switch(retval) {
case NETSTRING_ERROR_TOO_LONG:
msg = "too long";
break;
case NETSTRING_ERROR_NO_COLON:
msg = "no colon after length field";
break;
case NETSTRING_ERROR_TOO_SHORT:
msg = "too short";
break;
case NETSTRING_ERROR_NO_COMMA:
msg = "missing comma";
break;
case NETSTRING_ERROR_LEADING_ZERO:
msg = "length field has a leading zero";
break;
case NETSTRING_ERROR_NO_LENGTH:
msg = "missing length field";
break;
case NETSTRING_INCOMPLETE:
msg = "incomplete";
break;
default:
ERR("bad netstring: unknown error (%d)\n", retval);
goto reconnect;
}
ERR("bad netstring: %s\n", msg);
reconnect:
force_reconnect(server);
return;
}
handle_netstring(server);
free_netstring(server->buffer);
server->buffer = NULL;
}
}