lsquic_ver_neg.h revision 229fce07
1229fce07SDmitri Tikhonov/* Copyright (c) 2017 - 2019 LiteSpeed Technologies Inc. See LICENSE. */ 250aadb33SDmitri Tikhonov#ifndef LSQUIC_VER_NEG_H 350aadb33SDmitri Tikhonov#define LSQUIC_VER_NEG_H 450aadb33SDmitri Tikhonov 550aadb33SDmitri Tikhonov/* Client engages in version negotiation, going from highest supported 650aadb33SDmitri Tikhonov * version to lowest. 750aadb33SDmitri Tikhonov */ 850aadb33SDmitri Tikhonovstruct ver_neg { 950aadb33SDmitri Tikhonov unsigned vn_supp; /* Remaining options, including `vn_ver' */ 1050aadb33SDmitri Tikhonov enum lsquic_version vn_ver; /* If client, current version sent to server; 1150aadb33SDmitri Tikhonov * if server, this is set to negotiated version. 1250aadb33SDmitri Tikhonov */ 1350aadb33SDmitri Tikhonov enum ver_neg_state { 1450aadb33SDmitri Tikhonov VN_START, /* Have not received ver-nego packet */ 1550aadb33SDmitri Tikhonov VN_IN_PROGRESS, /* Received ver-nego packet */ 1650aadb33SDmitri Tikhonov VN_END, /* Received packet using supported version */ 1750aadb33SDmitri Tikhonov } vn_state; 1850aadb33SDmitri Tikhonov lsquic_ver_tag_t vn_buf; /* Buffer to store version tag */ 1950aadb33SDmitri Tikhonov lsquic_ver_tag_t *vn_tag; /* Pointer to version tag. Set to NULL if 2050aadb33SDmitri Tikhonov * version negotiation is done in the client; 2150aadb33SDmitri Tikhonov * always set to NULL in server. 2250aadb33SDmitri Tikhonov */ 2350aadb33SDmitri Tikhonov}; 2450aadb33SDmitri Tikhonov 2550aadb33SDmitri Tikhonov#endif 26