quentin/tor_multipath_voip
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Quentin 2019-08-12 16:38:19 +02:00
parent cf027261c8
commit bc202c07eb
2 changed files with 10 additions and 6 deletions
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12
src/packet.c
View file

@ -93,14 +93,13 @@ enum FD_STATE write_packet_to_tcp(struct evt_core_fdinfo* fdinfo, struct buffer_
enum FD_STATE write_packet_to_udp(struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp, struct udp_target* udp_t) {
ssize_t nwrite;
union abstract_packet* ap = (union abstract_packet*) (&bp->ip + bp->awrite);
union abstract_packet* end = buffer_free_ap(bp);
if (bp->mode != BP_WRITING) return FDS_ERR;
while (ap != end) {
do {
if (ap->fmt.headers.cmd != CMD_UDP_ENCAPSULATED) continue;
size_t bytes_to_send;
size_t pkt_header_size = sizeof(ap->fmt.headers);
size_t pkt_header_size = sizeof(ap->fmt.headers) + sizeof(ap->fmt.content.udp_encapsulated) - sizeof(ap->fmt.content.udp_encapsulated.payload);
struct sockaddr* addr = NULL;
socklen_t addrlen = 0;
if (udp_t->set) {
@ -110,7 +109,7 @@ enum FD_STATE write_packet_to_udp(struct evt_core_fdinfo* fdinfo, struct buffer_
bytes_to_send = ap->fmt.headers.size - pkt_header_size;
nwrite = sendto(fdinfo->fd,
&(ap->fmt.content.udp_encapsulated),
&(ap->fmt.content.udp_encapsulated.payload),
bytes_to_send,
0,
addr,
@ -119,7 +118,8 @@ enum FD_STATE write_packet_to_udp(struct evt_core_fdinfo* fdinfo, struct buffer_
if (nwrite == -1 && errno == EAGAIN) return FDS_AGAIN;
if (nwrite != bytes_to_send) return FDS_ERR;
bp->awrite += nwrite;
}
} while((ap = ap_next(ap)) != NULL);
bp->mode = BP_READING;
bp->aread = 0;
@ -137,7 +137,7 @@ enum FD_STATE read_packet_from_udp (struct evt_core_fdinfo* fdinfo, struct buffe
return FDS_ERR;
}
size_t pkt_header_size = sizeof(ap->fmt.headers);
size_t pkt_header_size = sizeof(ap->fmt.headers) + sizeof(ap->fmt.content.udp_encapsulated) - sizeof(ap->fmt.content.udp_encapsulated.payload);
size_t udp_packet_size = sizeof(bp->ip) - pkt_header_size;
socklen_t addrlen = sizeof(struct sockaddr_in);

4
src/proxy.c
View file

@ -127,18 +127,22 @@ int main_on_udp_write (struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo)
int write_res = FDS_READY;
// 1. Get current write buffer OR a buffer from the waiting queue OR leave
if (ctx->verbose > 1) fprintf(stderr, " [proxy] Find write buffer\n");
if ((bp = get_write_buffer(&app_ctx->br, fdinfo)) == NULL) return 1;
// 2. Write buffer
if (ctx->verbose > 1) fprintf(stderr, " [proxy] Write UDP packet\n");
write_res = write_packet_to_udp(fdinfo, bp, fdinfo->other);
if (write_res == FDS_ERR) goto co_error;
if (write_res == FDS_AGAIN) return 1;
// 3. Notify helpers
if (ctx->verbose > 1) fprintf(stderr, " [proxy] Notify traffic capture\n");
traffic_capture_notify (&app_ctx->cap, bp, "out");
// 4. A whole packet has been written
// Release the buffer and notify
if (ctx->verbose > 1) fprintf(stderr, " [proxy] Release buffer and notify\n");
mv_buffer_wtof(&app_ctx->br, fdinfo);
notify_read(ctx, &app_ctx->br);