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Import sslsplit code for errorcb ERROR event, and improvements

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Soner Tari 2017-07-21 13:46:44 +03:00
parent 63c51e9edd
commit bc55a5f7bb
1 changed files with 147 additions and 33 deletions
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176
pxyconn.c
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@ -3053,7 +3053,7 @@ pxy_bev_eventcb(struct bufferevent *bev, short events, void *arg)
#else /* LIBEVENT_VERSION_NUMBER < 0x02010000 */ #else /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
/* Older versions of libevent will report these. */ /* Older versions of libevent will report these. */
if (OPTS_DEBUG(ctx->opts)) { if (OPTS_DEBUG(ctx->opts)) {
log_dbg_printf("Unclean SSL shutdown.\n"); log_dbg_printf("Unclean SSL shutdown., fd=%d\n", ctx->fd);
} }
#endif /* LIBEVENT_VERSION_NUMBER < 0x02010000 */ #endif /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
} else if (ERR_GET_REASON(sslerr) == } else if (ERR_GET_REASON(sslerr) ==
@ -3114,20 +3114,77 @@ pxy_bev_eventcb(struct bufferevent *bev, short events, void *arg)
} }
} }
pxy_conn_desc_t *src_ctx = &ctx->src; // @todo Close and free the connections upon errors
/* we only get a single disconnect event here for both connections */ log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_bev_eventcb: ERROR pxy_conn_free %s, fd=%d\n", event_name, ctx->fd);
if (OPTS_DEBUG(ctx->opts)) { // pxy_conn_free(ctx);
log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: ERROR %s disconnected to [%s]:%s\n",
src_ctx->ssl ? "SSL" : "TCP", pxy_conn_desc_t *this = (bev==ctx->src.bev) ? &ctx->src : &ctx->dst;
ctx->dsthost_str, ctx->dstport_str); pxy_conn_desc_t *other = (bev==ctx->src.bev) ? &ctx->dst : &ctx->src;
log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: ERROR %s disconnected from [%s]:%s\n",
src_ctx->ssl ? "SSL" : "TCP", void (*this_free_and_close_fd_func)(struct bufferevent *, pxy_conn_ctx_t *) = (this->bev==ctx->src.bev) ? &bufferevent_free_and_close_fd : &bufferevent_free_and_close_fd_nonssl;
ctx->srchost_str, ctx->srcport_str); void (*other_free_and_close_fd_func)(struct bufferevent *, pxy_conn_ctx_t *) = (other->bev==ctx->dst.bev) ? &bufferevent_free_and_close_fd_nonssl : &bufferevent_free_and_close_fd;
if (bev == ctx->srv_dst.bev) {
if (!ctx->connected) {
/* the callout to the original destination failed,
* e.g. because it asked for client cert auth, so
* close the accepted socket and clean up */
// if (bev == ctx->srv_dst.bev && ctx->srv_dst.ssl &&
// ctx->opts->passthrough && have_sslerr) {
// /* ssl callout failed, fall back to plain
// * TCP passthrough of SSL connection */
// bufferevent_free_and_close_fd(bev, ctx);
// ctx->srv_dst.bev = NULL;
// ctx->srv_dst.ssl = NULL;
// ctx->passthrough = 1;
// log_dbg_printf("SSL dst connection failed; fal"
// "ling back to passthrough\n");
// pxy_fd_readcb(ctx->fd, 0, ctx);
// return;
// }
bufferevent_free_and_close_fd(bev, ctx);
ctx->srv_dst.bev = NULL;
ctx->srv_dst.ssl = NULL;
return;
}
} else {
if (!ctx->connected) {
evutil_closesocket(ctx->fd);
other->closed = 1;
} else if (!other->closed) {
/* if the other end is still open and doesn't have data
* to send, close it, otherwise its writecb will close
* it after writing what's left in the output buffer */
struct evbuffer *outbuf;
outbuf = bufferevent_get_output(other->bev);
if (evbuffer_get_length(outbuf) == 0) {
other_free_and_close_fd_func(other->bev, ctx);
other->bev = NULL;
other->closed = 1;
}
} }
// @todo Close and free the connections upon errors pxy_conn_desc_t *src_ctx = &ctx->src;
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_bev_eventcb: ERROR pxy_conn_free %s fd=%d\n", event_name, ctx->fd); /* we only get a single disconnect event here for both connections */
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: ERROR disconnect <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ERROR CONN TERM, fd=%d\n", ctx->fd);
if (OPTS_DEBUG(ctx->opts)) {
log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: ERROR %s disconnected to [%s]:%s, fd=%d\n",
src_ctx->ssl ? "SSL" : "TCP",
ctx->dsthost_str, ctx->dstport_str, ctx->fd);
log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: ERROR %s disconnected from [%s]:%s, fd=%d\n",
src_ctx->ssl ? "SSL" : "TCP",
ctx->srchost_str, ctx->srcport_str, ctx->fd);
}
this->closed = 1;
this_free_and_close_fd_func(bev, ctx);
this->bev = NULL;
if (other->closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: ERROR disconnect other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ERROR CONN TERM, fd=%d\n", ctx->fd);
pxy_conn_free(ctx); pxy_conn_free(ctx);
}
}
goto leave; goto leave;
} }
@ -3152,12 +3209,12 @@ pxy_bev_eventcb(struct bufferevent *bev, short events, void *arg)
evutil_closesocket(ctx->fd); evutil_closesocket(ctx->fd);
other->closed = 1; other->closed = 1;
} else if (!other->closed) { } else if (!other->closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: !other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: !other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM, fd=%d\n", ctx->fd);
struct evbuffer *inbuf, *outbuf; struct evbuffer *inbuf, *outbuf;
inbuf = bufferevent_get_input(bev); inbuf = bufferevent_get_input(bev);
outbuf = bufferevent_get_output(other->bev); outbuf = bufferevent_get_output(other->bev);
if (evbuffer_get_length(inbuf) > 0) { if (evbuffer_get_length(inbuf) > 0) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: evbuffer_get_length(inbuf) > 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: evbuffer_get_length(inbuf) > 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM, fd=%d\n", ctx->fd);
pxy_bev_readcb(bev, ctx); pxy_bev_readcb(bev, ctx);
} else { } else {
/* if the other end is still open and doesn't /* if the other end is still open and doesn't
@ -3165,7 +3222,7 @@ pxy_bev_eventcb(struct bufferevent *bev, short events, void *arg)
* writecb will close it after writing what's * writecb will close it after writing what's
* left in the output buffer. */ * left in the output buffer. */
if (evbuffer_get_length(outbuf) == 0) { if (evbuffer_get_length(outbuf) == 0) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: evbuffer_get_length(inbuf) == 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: evbuffer_get_length(inbuf) == 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM, fd=%d\n", ctx->fd);
other->closed = 1; other->closed = 1;
other_free_and_close_fd_func(other->bev, ctx); other_free_and_close_fd_func(other->bev, ctx);
other->bev = NULL; other->bev = NULL;
@ -3173,22 +3230,22 @@ pxy_bev_eventcb(struct bufferevent *bev, short events, void *arg)
} }
} }
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: disconnect <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: disconnect <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM, fd=%d\n", ctx->fd);
/* we only get a single disconnect event here for both connections */ /* we only get a single disconnect event here for both connections */
if (OPTS_DEBUG(ctx->opts)) { if (OPTS_DEBUG(ctx->opts)) {
log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: EOF %s disconnected to [%s]:%s\n", log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: EOF %s disconnected to [%s]:%s, fd=%d\n",
this->ssl ? "SSL" : "TCP", this->ssl ? "SSL" : "TCP",
ctx->dsthost_str, ctx->dstport_str); ctx->dsthost_str, ctx->dstport_str, ctx->fd);
log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: EOF %s disconnected from [%s]:%s\n", log_dbg_printf(">>>>>=================================== pxy_bev_eventcb: EOF %s disconnected from [%s]:%s, fd=%d\n",
this->ssl ? "SSL" : "TCP", this->ssl ? "SSL" : "TCP",
ctx->srchost_str, ctx->srcport_str); ctx->srchost_str, ctx->srcport_str, ctx->fd);
} }
this->closed = 1; this->closed = 1;
this_free_and_close_fd_func(bev, ctx); this_free_and_close_fd_func(bev, ctx);
this->bev = NULL; this->bev = NULL;
if (other->closed) { if (other->closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: disconnect other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: disconnect other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CONN TERM, fd=%d\n", ctx->fd);
pxy_conn_free(ctx); pxy_conn_free(ctx);
} }
} }
@ -3239,7 +3296,7 @@ pxy_bev_eventcb_child(struct bufferevent *bev, short events, void *arg)
#else /* LIBEVENT_VERSION_NUMBER < 0x02010000 */ #else /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
/* Older versions of libevent will report these. */ /* Older versions of libevent will report these. */
if (OPTS_DEBUG(parent->opts)) { if (OPTS_DEBUG(parent->opts)) {
log_dbg_printf("Unclean SSL shutdown.\n"); log_dbg_printf("Unclean SSL shutdown. fd=%d, pfd=%d\n", ctx->fd, parent->fd);
} }
#endif /* LIBEVENT_VERSION_NUMBER < 0x02010000 */ #endif /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
} else if (ERR_GET_REASON(sslerr) == } else if (ERR_GET_REASON(sslerr) ==
@ -3301,7 +3358,64 @@ pxy_bev_eventcb_child(struct bufferevent *bev, short events, void *arg)
} }
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_child: ERROR pxy_conn_free_child, %s fd=%d\n", event_name, ctx->fd); log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_child: ERROR pxy_conn_free_child, %s fd=%d\n", event_name, ctx->fd);
// pxy_conn_free_child(ctx);
pxy_conn_desc_t *this = (bev==ctx->src.bev) ? &ctx->src : &ctx->dst;
pxy_conn_desc_t *other = (bev==ctx->src.bev) ? &ctx->dst : &ctx->src;
void (*this_free_and_close_fd_func)(struct bufferevent *, pxy_conn_ctx_t *) = (this->bev==ctx->src.bev) ? &bufferevent_free_and_close_fd_nonssl : &bufferevent_free_and_close_fd;
void (*other_free_and_close_fd_func)(struct bufferevent *, pxy_conn_ctx_t *) = (other->bev==ctx->dst.bev) ? &bufferevent_free_and_close_fd : &bufferevent_free_and_close_fd_nonssl;
if (!ctx->connected) {
/* the callout to the original destination failed,
* e.g. because it asked for client cert auth, so
* close the accepted socket and clean up */
// if (bev == ctx->dst.bev && ctx->dst.ssl &&
// ctx->parent->opts->passthrough && have_sslerr) {
// /* ssl callout failed, fall back to plain
// * TCP passthrough of SSL connection */
// bufferevent_free_and_close_fd(bev, ctx);
// ctx->dst.bev = NULL;
// ctx->dst.ssl = NULL;
// ctx->parent->passthrough = 1;
// log_dbg_printf("SSL dst connection failed; fal"
// "ling back to passthrough\n");
// pxy_fd_readcb(ctx->fd, 0, ctx);
// return;
// }
evutil_closesocket(ctx->fd);
other->closed = 1;
} else if (!other->closed) {
/* if the other end is still open and doesn't have data
* to send, close it, otherwise its writecb will close
* it after writing what's left in the output buffer */
struct evbuffer *outbuf;
outbuf = bufferevent_get_output(other->bev);
if (evbuffer_get_length(outbuf) == 0) {
other_free_and_close_fd_func(other->bev, ctx->parent);
other->bev = NULL;
other->closed = 1;
}
}
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_child: ERROR disconnect <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ERROR CHILD TERM, fd=%d, pfd=%d\n", ctx->fd, parent->fd);
/* we only get a single disconnect event here for both connections */
if (OPTS_DEBUG(ctx->parent->opts)) {
log_dbg_printf(">>>>>--------------------- pxy_bev_eventcb_child: ERROR %s disconnected to [%s]:%s, fd=%d, pfd=%d\n",
this->ssl ? "SSL" : "TCP",
parent->dsthost_str, parent->dstport_str, ctx->fd, parent->fd);
log_dbg_printf(">>>>>--------------------- pxy_bev_eventcb_child: ERROR %s disconnected from [%s]:%s, fd=%d, pfd=%d\n",
this->ssl ? "SSL" : "TCP",
parent->srchost_str, parent->srcport_str, ctx->fd, parent->fd);
}
this->closed = 1;
this_free_and_close_fd_func(bev, ctx->parent);
this->bev = NULL;
if (other->closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_child: ERROR disconnect other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ERROR CHILD TERM, fd=%d, pfd=%d\n", ctx->fd, parent->fd);
pxy_conn_free_child(ctx); pxy_conn_free_child(ctx);
}
goto leave; goto leave;
} }
@ -3321,12 +3435,12 @@ pxy_bev_eventcb_child(struct bufferevent *bev, short events, void *arg)
evutil_closesocket(ctx->fd); evutil_closesocket(ctx->fd);
other->closed = 1; other->closed = 1;
} else if (!other->closed) { } else if (!other->closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb_child: !other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb_child: !other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM, fd=%d, pfd=%d\n", ctx->fd, parent->fd);
struct evbuffer *inbuf, *outbuf; struct evbuffer *inbuf, *outbuf;
inbuf = bufferevent_get_input(bev); inbuf = bufferevent_get_input(bev);
outbuf = bufferevent_get_output(other->bev); outbuf = bufferevent_get_output(other->bev);
if (evbuffer_get_length(inbuf) > 0) { if (evbuffer_get_length(inbuf) > 0) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb_child: evbuffer_get_length(inbuf) > 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb_child: evbuffer_get_length(inbuf) > 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM, fd=%d, pfd=%d\n", ctx->fd, parent->fd);
pxy_bev_readcb_child(bev, ctx); pxy_bev_readcb_child(bev, ctx);
} else { } else {
/* if the other end is still open and doesn't /* if the other end is still open and doesn't
@ -3334,7 +3448,7 @@ pxy_bev_eventcb_child(struct bufferevent *bev, short events, void *arg)
* writecb will close it after writing what's * writecb will close it after writing what's
* left in the output buffer. */ * left in the output buffer. */
if (evbuffer_get_length(outbuf) == 0) { if (evbuffer_get_length(outbuf) == 0) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb_child: evbuffer_get_length(inbuf) == 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb_child: evbuffer_get_length(inbuf) == 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM, fd=%d, pfd=%d\n", ctx->fd, parent->fd);
other->closed = 1; other->closed = 1;
other_free_and_close_fd_func(other->bev, ctx->parent); other_free_and_close_fd_func(other->bev, ctx->parent);
other->bev = NULL; other->bev = NULL;
@ -3342,22 +3456,22 @@ pxy_bev_eventcb_child(struct bufferevent *bev, short events, void *arg)
} }
} }
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_child: disconnect <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_child: disconnect <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM, fd=%d, pfd=%d\n", ctx->fd, parent->fd);
/* we only get a single disconnect event here for both connections */ /* we only get a single disconnect event here for both connections */
if (OPTS_DEBUG(parent->opts)) { if (OPTS_DEBUG(parent->opts)) {
log_dbg_printf(">>>>>--------------------- pxy_bev_eventcb_child: EOF %s disconnected to [%s]:%s\n", log_dbg_printf(">>>>>--------------------- pxy_bev_eventcb_child: EOF %s disconnected to [%s]:%s, fd=%d, pfd=%d\n",
this->ssl ? "SSL" : "TCP", this->ssl ? "SSL" : "TCP",
ctx->dsthost_str, ctx->dstport_str); parent->dsthost_str, parent->dstport_str, ctx->fd, parent->fd);
log_dbg_printf(">>>>>--------------------- pxy_bev_eventcb_child: EOF %s disconnected from [%s]:%s\n", log_dbg_printf(">>>>>--------------------- pxy_bev_eventcb_child: EOF %s disconnected from [%s]:%s, fd=%d, pfd=%d\n",
this->ssl ? "SSL" : "TCP", this->ssl ? "SSL" : "TCP",
ctx->srchost_str, ctx->srcport_str); parent->srchost_str, parent->srcport_str, ctx->fd, parent->fd);
} }
this->closed = 1; this->closed = 1;
this_free_and_close_fd_func(bev, ctx->parent); this_free_and_close_fd_func(bev, ctx->parent);
this->bev = NULL; this->bev = NULL;
if (other->closed) { if (other->closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_child: disconnect other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM\n"); log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_child: disconnect other->closed <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< CHILD TERM, fd=%d, pfd=%d\n", ctx->fd, parent->fd);
pxy_conn_free_child(ctx); pxy_conn_free_child(ctx);
} }
} }