Blame SOURCES/httpd-2.4.6-r1587053.patch

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diff --git a/modules/proxy/mod_proxy_wstunnel.c b/modules/proxy/mod_proxy_wstunnel.c
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index 525109a..eb34eee 100644
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--- a/modules/proxy/mod_proxy_wstunnel.c
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+++ b/modules/proxy/mod_proxy_wstunnel.c
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@@ -103,10 +103,12 @@ static int proxy_wstunnel_transfer(request_rec *r, conn_rec *c_i, conn_rec *c_o,
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         rv = ap_get_brigade(c_i->input_filters, bb, AP_MODE_READBYTES,
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                             APR_NONBLOCK_READ, AP_IOBUFSIZE);
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         if (rv == APR_SUCCESS) {
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-            if (c_o->aborted)
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+            if (c_o->aborted) {
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                 return APR_EPIPE;
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-            if (APR_BRIGADE_EMPTY(bb))
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+            }
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+            if (APR_BRIGADE_EMPTY(bb)){
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                 break;
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+            }
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 #ifdef DEBUGGING
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             len = -1;
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             apr_brigade_length(bb, 0, &len;;
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@@ -178,7 +180,6 @@ static int ap_proxy_wstunnel_request(apr_pool_t *p, request_rec *r,
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     conn_rec *c = r->connection;
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     apr_socket_t *sock = conn->sock;
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     conn_rec *backconn = conn->connection;
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-    int client_error = 0;
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     char *buf;
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     apr_bucket_brigade *header_brigade;
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     apr_bucket *e;
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@@ -224,7 +225,7 @@ static int ap_proxy_wstunnel_request(apr_pool_t *p, request_rec *r,
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     pollfd.p = p;
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     pollfd.desc_type = APR_POLL_SOCKET;
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-    pollfd.reqevents = APR_POLLIN;
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+    pollfd.reqevents = APR_POLLIN | APR_POLLHUP;
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     pollfd.desc.s = sock;
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     pollfd.client_data = NULL;
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     apr_pollset_add(pollset, &pollfd);
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@@ -237,6 +238,9 @@ static int ap_proxy_wstunnel_request(apr_pool_t *p, request_rec *r,
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     r->proto_output_filters = c->output_filters;
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     r->input_filters = c->input_filters;
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     r->proto_input_filters = c->input_filters;
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+    /* This handler should take care of the entire connection; make it so that
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+     * nothing else is attempted on the connection after returning. */
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+    c->keepalive = AP_CONN_CLOSE;
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     remove_reqtimeout(r->input_filters);
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@@ -257,26 +261,28 @@ static int ap_proxy_wstunnel_request(apr_pool_t *p, request_rec *r,
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             if (cur->desc.s == sock) {
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                 pollevent = cur->rtnevents;
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-                if (pollevent & APR_POLLIN) {
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+                if (pollevent & (APR_POLLIN | APR_POLLHUP)) {
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                     ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(02446)
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                                   "sock was readable");
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                     rv = proxy_wstunnel_transfer(r, backconn, c, bb, "sock");
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                     }
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-                else if ((pollevent & APR_POLLERR)
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-                         || (pollevent & APR_POLLHUP)) {
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+                else if (pollevent & APR_POLLERR) {
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                          rv = APR_EPIPE;
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                          ap_log_rerror(APLOG_MARK, APLOG_NOTICE, 0, r, APLOGNO(02447)
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-                                       "err/hup on backconn");
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+                                       "err on backconn");
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                 }
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-                if (rv != APR_SUCCESS)
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-                    client_error = 1;
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             }
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             else if (cur->desc.s == client_socket) {
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                 pollevent = cur->rtnevents;
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-                if (pollevent & APR_POLLIN) {
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+                if (pollevent & (APR_POLLIN | APR_POLLHUP)) {
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                     ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(02448)
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                                   "client was readable");
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                     rv = proxy_wstunnel_transfer(r, c, backconn, bb, "client");
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+                } else if (pollevent & APR_POLLERR) {
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+                    rv = APR_EPIPE;
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+                    c->aborted = 1;
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+                    ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(02607)
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+                                  "error on client conn");
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                 }
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             }
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             else {
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@@ -294,9 +300,6 @@ static int ap_proxy_wstunnel_request(apr_pool_t *p, request_rec *r,
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     ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r,
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                   "finished with poll() - cleaning up");
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-    if (client_error) {
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-        return HTTP_INTERNAL_SERVER_ERROR;
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-    }
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     return OK;
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 }
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