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https://git.haproxy.org/git/haproxy.git/
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216f70f989
Implement basic support for glitches on QUIC multiplexer. This is mostly identical too glitches for HTTP/2. A new configuration option named tune.quic.frontend.glitches-threshold is defined to limit the number of glitches on a connection before closing it. Glitches counter is incremented via qcc_report_glitch(). A new qcc_app_ops callback <report_susp> is defined. On threshold reaching, it allows to set an application error code to close the connection. For HTTP/3, value H3_EXCESSIVE_LOAD is returned. If not defined, default code INTERNAL_ERROR is used. For the moment, no glitch are reported for QUIC or HTTP/3 usage. This will be added in future patches as needed.
124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
#ifndef _HAPROXY_MUX_QUIC_H
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#define _HAPROXY_MUX_QUIC_H
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#ifdef USE_QUIC
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#ifndef USE_OPENSSL
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#error "Must define USE_OPENSSL"
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#endif
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#include <haproxy/api.h>
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#include <haproxy/connection.h>
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#include <haproxy/list.h>
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#include <haproxy/mux_quic-t.h>
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#include <haproxy/stconn.h>
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void qcc_set_error(struct qcc *qcc, int err, int app);
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int qcc_report_glitch(struct qcc *qcc, int inc);
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struct qcs *qcc_init_stream_local(struct qcc *qcc, int bidi);
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struct stconn *qcs_attach_sc(struct qcs *qcs, struct buffer *buf, char fin);
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int qcs_is_close_local(struct qcs *qcs);
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int qcs_is_close_remote(struct qcs *qcs);
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int qcs_subscribe(struct qcs *qcs, int event_type, struct wait_event *es);
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void qcs_notify_recv(struct qcs *qcs);
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void qcs_notify_send(struct qcs *qcs);
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int qcc_notify_buf(struct qcc *qcc);
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struct buffer *qcc_get_stream_rxbuf(struct qcs *qcs);
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struct buffer *qcc_get_stream_txbuf(struct qcs *qcs, int *err);
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int qcc_realign_stream_txbuf(const struct qcs *qcs, struct buffer *out);
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int qcc_release_stream_txbuf(struct qcs *qcs);
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int qcc_stream_can_send(const struct qcs *qcs);
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void qcc_reset_stream(struct qcs *qcs, int err);
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void qcc_send_stream(struct qcs *qcs, int urg, int count);
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void qcc_abort_stream_read(struct qcs *qcs);
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int qcc_recv(struct qcc *qcc, uint64_t id, uint64_t len, uint64_t offset,
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char fin, char *data);
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int qcc_recv_max_data(struct qcc *qcc, uint64_t max);
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int qcc_recv_max_stream_data(struct qcc *qcc, uint64_t id, uint64_t max);
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int qcc_recv_reset_stream(struct qcc *qcc, uint64_t id, uint64_t err, uint64_t final_size);
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int qcc_recv_stop_sending(struct qcc *qcc, uint64_t id, uint64_t err);
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void qcc_streams_sent_done(struct qcs *qcs, uint64_t data, uint64_t offset);
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/* Bit shift to get the stream sub ID for internal use which is obtained
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* shifting the stream IDs by this value, knowing that the
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* QCS_ID_TYPE_SHIFT less significant bits identify the stream ID
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* types (client initiated bidirectional, server initiated bidirectional,
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* client initiated unidirectional, server initiated bidirectional).
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* Note that there is no reference to such stream sub IDs in the RFC.
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*/
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#define QCS_ID_TYPE_MASK 0x3
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#define QCS_ID_TYPE_SHIFT 2
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/* The less significant bit of a stream ID is set for a server initiated stream */
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#define QCS_ID_SRV_INTIATOR_BIT 0x1
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/* This bit is set for unidirectional streams */
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#define QCS_ID_DIR_BIT 0x2
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static inline enum qcs_type qcs_id_type(uint64_t id)
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{
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return id & QCS_ID_TYPE_MASK;
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}
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/* Return true if stream has been opened locally. */
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static inline int quic_stream_is_local(struct qcc *qcc, uint64_t id)
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{
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return conn_is_back(qcc->conn) == !(id & QCS_ID_SRV_INTIATOR_BIT);
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}
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/* Return true if stream is opened by peer. */
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static inline int quic_stream_is_remote(struct qcc *qcc, uint64_t id)
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{
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return !quic_stream_is_local(qcc, id);
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}
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static inline int quic_stream_is_uni(uint64_t id)
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{
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return id & QCS_ID_DIR_BIT;
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}
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static inline int quic_stream_is_bidi(uint64_t id)
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{
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return !quic_stream_is_uni(id);
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}
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static inline char *qcs_st_to_str(enum qcs_state st)
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{
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switch (st) {
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case QC_SS_IDLE: return "IDL";
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case QC_SS_OPEN: return "OPN";
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case QC_SS_HLOC: return "HCL";
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case QC_SS_HREM: return "HCR";
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case QC_SS_CLO: return "CLO";
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default: return "???";
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}
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}
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int qcc_install_app_ops(struct qcc *qcc, const struct qcc_app_ops *app_ops);
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/* Register <qcs> stream for http-request timeout. If the stream is not yet
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* attached in the configured delay, qcc timeout task will be triggered. This
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* means the full header section was not received in time.
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*
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* This function should be called by the application protocol layer on request
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* streams initialization.
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*/
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static inline void qcs_wait_http_req(struct qcs *qcs)
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{
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struct qcc *qcc = qcs->qcc;
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/* A stream cannot be registered several times. */
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BUG_ON_HOT(tick_isset(qcs->start));
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qcs->start = now_ms;
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/* qcc.opening_list size is limited by flow-control so no custom
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* restriction is needed here.
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*/
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LIST_APPEND(&qcc->opening_list, &qcs->el_opening);
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}
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void qcc_show_quic(struct qcc *qcc);
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#endif /* USE_QUIC */
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#endif /* _HAPROXY_MUX_QUIC_H */
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