CHAT_EXPECT
if (c->state != CHAT_EXPECT && c->state != CHAT_SEND)
c->state = CHAT_EXPECT;
if (c->state == CHAT_EXPECT) {
if (c->state == CHAT_EXPECT) {
if (c->state == CHAT_EXPECT)
if (c->state == CHAT_EXPECT) {
c->state = CHAT_EXPECT;