forked from brl/citadel
77 lines
2.8 KiB
Diff
77 lines
2.8 KiB
Diff
Ensure FASTOP messages get an ACK reply so that the client can be sure the server
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recieved them. This means if connections are terminated, data isn't lost.
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RP 2017/9/22
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Upstream-Status: Submitted
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Index: pseudo-1.8.2/pseudo_client.c
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===================================================================
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--- pseudo-1.8.2.orig/pseudo_client.c
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+++ pseudo-1.8.2/pseudo_client.c
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@@ -1331,21 +1331,19 @@ pseudo_client_request(pseudo_msg_t *msg,
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* indicating a successful send.
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*/
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pseudo_debug(PDBGF_CLIENT | PDBGF_VERBOSE, "sent!\n");
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- if (msg->type != PSEUDO_MSG_FASTOP) {
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- response = pseudo_msg_receive(connect_fd);
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- if (!response) {
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- pseudo_debug(PDBGF_CLIENT, "expected response did not occur; retrying\n");
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+ response = pseudo_msg_receive(connect_fd);
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+ if (!response) {
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+ pseudo_debug(PDBGF_CLIENT, "expected response did not occur; retrying\n");
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+ } else {
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+ if (response->type != PSEUDO_MSG_ACK) {
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+ pseudo_debug(PDBGF_CLIENT, "got non-ack response %d\n", response->type);
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+ return 0;
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+ } else if (msg->type != PSEUDO_MSG_FASTOP) {
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+ pseudo_debug(PDBGF_CLIENT | PDBGF_VERBOSE, "got response type %d\n", response->type);
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+ return response;
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} else {
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- if (response->type != PSEUDO_MSG_ACK) {
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- pseudo_debug(PDBGF_CLIENT, "got non-ack response %d\n", response->type);
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- return 0;
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- } else {
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- pseudo_debug(PDBGF_CLIENT | PDBGF_VERBOSE, "got response type %d\n", response->type);
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- return response;
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- }
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+ return 0;
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}
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- } else {
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- return 0;
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}
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}
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pseudo_diag("pseudo: server connection persistently failed, aborting.\n");
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Index: pseudo-1.8.2/pseudo_server.c
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===================================================================
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--- pseudo-1.8.2.orig/pseudo_server.c
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+++ pseudo-1.8.2/pseudo_server.c
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@@ -463,6 +463,11 @@ close_client(int client) {
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--highest_client;
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}
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+static pseudo_msg_t server_fastop_reply = {
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+ .type = PSEUDO_MSG_ACK,
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+ .op = OP_NONE,
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+};
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+
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/* Actually process a request.
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*/
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static int
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@@ -515,8 +520,14 @@ serve_client(int i) {
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* pseudo_server_response.
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*/
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if (in->type != PSEUDO_MSG_SHUTDOWN) {
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- if (in->type == PSEUDO_MSG_FASTOP)
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+ if (in->type == PSEUDO_MSG_FASTOP) {
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send_response = 0;
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+ /* For fastops we reply now to say we got the data */
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+ if ((rc = pseudo_msg_send(clients[i].fd, &server_fastop_reply, 0, NULL)) != 0) {
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+ pseudo_debug(PDBGF_SERVER, "failed to send fastop ack to client %d [%d]: %d (%s)\n",
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+ i, (int) clients[i].pid, rc, strerror(errno));
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+ }
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+ }
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/* most messages don't need these, but xattr may */
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response_path = 0;
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response_pathlen = -1;
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