static void
handle_request(struct bufferevent* bev, void* arg)
{
size_t len;
paxos_msg msg;
struct evproposer* p = arg;
struct evbuffer* in = bufferevent_get_input(bev);
while ((len = evbuffer_get_length(in)) > sizeof(paxos_msg)) { //如果buffer中的数据数量大于一定，开始处理
evbuffer_copyout(in, &msg, sizeof(paxos_msg)); //判断一下，如果大小还小于消息大小，说明未传输完成，返回，否则处理消息
if (len < PAXOS_MSG_SIZE((&msg)))
return;
proposer_handle_msg(p, bev);
}
}
static void handle_request(struct bufferevent* bev, void* arg)
{
size_t len;
paxos_msg msg;
struct evproposer* p = (struct evproposer*)arg;
struct evbuffer* in = bufferevent_get_input(bev);
/*读取触发的消息，循环读取，防止粘包*/
while ((len = evbuffer_get_length(in)) > sizeof(paxos_msg)){
evbuffer_copyout(in, &msg, sizeof(paxos_msg));
if(len >= PAXOS_MSG_SIZE((&msg))){
proposer_handle_msg(p, bev);
}
}
}
static void on_read(struct bufferevent* bev, void* arg)
{
size_t len;
paxos_msg msg;
struct evbuffer* in;
struct tcp_receiver* r = (struct tcp_receiver *)arg;
/*读取paxos msg，可能是多个*/
in = bufferevent_get_input(bev);
while((len = evbuffer_get_length(in)) > sizeof(paxos_msg)){
evbuffer_copyout(in, &msg, sizeof(paxos_msg));
if (len < PAXOS_MSG_SIZE((&msg)))
return;
r->callback(bev, r->arg);
}
}
