tor_multipath_voip/src/algo_thunder.c
2019-08-26 12:08:31 +02:00

104 lines
3.1 KiB
C

#include <sys/timerfd.h>
#include "algo_utils.h"
#include "utils.h"
#include "url.h"
#include "proxy.h"
#include "timer.h"
struct thunder_ctx {
uint16_t recv_id;
uint16_t emit_id;
uint64_t lid_sent;
uint8_t selected_link;
uint8_t total_links;
uint64_t lid_sent_per_link[64];
uint8_t delta_t_per_link[64];
};
void prepare(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp) {
struct algo_ctx* app_ctx = fdinfo->cat->app_ctx;
struct thunder_ctx* thunderc = app_ctx->misc;
thunderc->emit_id++;
union abstract_packet metadata = {
.fmt.headers.cmd = CMD_UDP_METADATA_THUNDER,
.fmt.headers.size = sizeof(metadata.fmt.headers) + sizeof(metadata.fmt.content.udp_metadata_thunder),
.fmt.headers.flags = 0,
.fmt.content.udp_metadata_thunder.id = thunderc->emit_id,
.fmt.content.udp_metadata_thunder.deltat = 0 //@FIXME
};
buffer_append_ap (bp, &metadata);
}
void pad(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp) {
}
int schedule(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp) {
struct algo_ctx* app_ctx = fdinfo->cat->app_ctx;
struct thunder_ctx* thunderc = app_ctx->misc;
struct evt_core_fdinfo *to_fdinfo = NULL;
struct evt_core_cat* cat = evt_core_get_from_cat (ctx, "tcp-write");
do {
thunderc->selected_link = thunderc->selected_link + 1 % cat->socklist->len;
if (thunderc->selected_link == 0) {
thunderc->lid_sent++;
}
union abstract_packet links = {
.fmt.headers.cmd = CMD_LINK_MONITORING_THUNDER,
.fmt.headers.size = sizeof(links.fmt.headers) + sizeof(links.fmt.content.link_monitoring_thunder),
.fmt.headers.flags = 0,
.fmt.content.link_monitoring_thunder.lid = thunderc->lid_sent,
.fmt.content.link_monitoring_thunder.links_status = NULL
};
to_fdinfo = g_array_index(cat->socklist, struct evt_core_fdinfo*, thunderc->selected_link);
// We move the buffer and notify the target
struct buffer_packet* bp_dup = dup_buffer_tow (&app_ctx->br, bp, to_fdinfo);
buffer_append_ap (bp_dup, &links);
main_on_tcp_write(ctx, to_fdinfo);
} while (1);
if (ctx->verbose > 1) fprintf(stderr, " [algo_thunder] Packets sent\n");
// Release the buffer
mv_buffer_rtof (&app_ctx->br, fdinfo);
return 0;
}
void algo_thunder_init(struct evt_core_ctx* ctx, struct algo_ctx* app_ctx, struct algo_params* ap) {
app_ctx->misc = malloc(sizeof(struct thunder_ctx));
if (app_ctx->misc == NULL) {
perror("malloc failed in algo thunder init");
exit(EXIT_FAILURE);
}
memset(app_ctx->misc, 0, sizeof(struct thunder_ctx));
struct thunder_ctx* thunderc = app_ctx->misc;
}
int algo_thunder_on_stream(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp) {
return 0;
}
int algo_thunder_on_datagram(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp) {
prepare(ctx, fdinfo, bp);
pad(ctx, fdinfo, bp);
return schedule(ctx, fdinfo, bp);
}
int algo_thunder_on_err(struct evt_core_ctx *ctx, struct evt_core_fdinfo *fdinfo) {
if (strstr(fdinfo->cat->name, "udp") != NULL) return 1;
return 0;
}