我手里也有207的开发板,正在试验TCP ECHO SERVER. static err_t tcp_echoserver_recv(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err)中 在这里接受到数据： else if (es->state == ES_RECEIVED) { /* more data received from client and previous data has been already sent*/ if(es->p == NULL) { es->p = p; /* send back received data */ tcp_echoserver_send(tpcb, es); } 实际的接收数据在结构里的啥地方？ 咋能一个一个的读出数据呢？
