Function connRead

app/redis-6.2.6/src/connection.h:151–153

Read from the connection, behaves the same as read(2). * * Like read(2), a short read is possible. A return value of 0 will indicate the * connection was closed, and -1 will indicate an error. * * The caller should NOT rely on errno. Testing for an EAGAIN-like condition, use * connGetState() to see if the connection state is still CONN_STATE_CONNECTED. */

 * connGetState() to see if the connection state is still CONN_STATE_CONNECTED.
 */
static inline int connRead(connection *conn, void *buf, size_t buf_len) {
    return conn->type->read(conn, buf, buf_len);
}

/* Register a write handler, to be called when the connection is writable.
 * If NULL, the existing handler is removed.