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commit ba675ed25a26fd425ffd19b02cf18babf4291b4f
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Author: Mark Wielaard <mark@klomp.org>
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Date: Thu May 5 23:59:57 2022 +0200
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debuginfod: Try without MHD_USE_DUAL_STACK if MHD_start_daemon fails
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On a systems that have ipv6 disabled debuginfod doesn't start up
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anymore because libhttpd MHD_USE_DUAL_STACK only works if it can
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open an ipv6 socket. If MHD_start_daemon with MHD_USE_DUAL_STACK
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fails try again without that flag set.
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https://sourceware.org/bugzilla/show_bug.cgi?id=29122
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Signed-off-by: Mark Wielaard <mark@klomp.org>
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diff --git a/debuginfod/debuginfod.cxx b/debuginfod/debuginfod.cxx
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index 4aaf41c0..c02540f1 100644
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--- a/debuginfod/debuginfod.cxx
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+++ b/debuginfod/debuginfod.cxx
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@@ -3899,40 +3899,67 @@ main (int argc, char *argv[])
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}
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}
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- // Start httpd server threads. Use a single dual-homed pool.
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- MHD_Daemon *d46 = MHD_start_daemon ((connection_pool ? 0 : MHD_USE_THREAD_PER_CONNECTION)
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+ unsigned int mhd_flags = ((connection_pool
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+ ? 0 : MHD_USE_THREAD_PER_CONNECTION)
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#if MHD_VERSION >= 0x00095300
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- | MHD_USE_INTERNAL_POLLING_THREAD
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+ | MHD_USE_INTERNAL_POLLING_THREAD
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#else
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- | MHD_USE_SELECT_INTERNALLY
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+ | MHD_USE_SELECT_INTERNALLY
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#endif
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+ | MHD_USE_DUAL_STACK
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#ifdef MHD_USE_EPOLL
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- | MHD_USE_EPOLL
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+ | MHD_USE_EPOLL
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#endif
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- | MHD_USE_DUAL_STACK
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#if MHD_VERSION >= 0x00095200
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- | MHD_USE_ITC
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+ | MHD_USE_ITC
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#endif
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- | MHD_USE_DEBUG, /* report errors to stderr */
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- http_port,
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- NULL, NULL, /* default accept policy */
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- handler_cb, NULL, /* handler callback */
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- MHD_OPTION_EXTERNAL_LOGGER, error_cb, NULL,
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- (connection_pool ? MHD_OPTION_THREAD_POOL_SIZE : MHD_OPTION_END),
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- (connection_pool ? (int)connection_pool : MHD_OPTION_END),
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- MHD_OPTION_END);
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+ | MHD_USE_DEBUG); /* report errors to stderr */
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+ // Start httpd server threads. Use a single dual-homed pool.
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+ MHD_Daemon *d46 = MHD_start_daemon (mhd_flags, http_port,
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+ NULL, NULL, /* default accept policy */
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+ handler_cb, NULL, /* handler callback */
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+ MHD_OPTION_EXTERNAL_LOGGER,
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+ error_cb, NULL,
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+ (connection_pool
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+ ? MHD_OPTION_THREAD_POOL_SIZE
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+ : MHD_OPTION_END),
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+ (connection_pool
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+ ? (int)connection_pool
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+ : MHD_OPTION_END),
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+ MHD_OPTION_END);
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+
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+ MHD_Daemon *d4 = NULL;
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if (d46 == NULL)
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{
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- sqlite3 *database = db;
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- sqlite3 *databaseq = dbq;
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- db = dbq = 0; // for signal_handler not to freak
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- sqlite3_close (databaseq);
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- sqlite3_close (database);
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- error (EXIT_FAILURE, 0, "cannot start http server at port %d", http_port);
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- }
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+ // Cannot use dual_stack, use ipv4 only
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+ mhd_flags &= ~(MHD_USE_DUAL_STACK);
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+ d4 = MHD_start_daemon (mhd_flags, http_port,
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+ NULL, NULL, /* default accept policy */
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+ handler_cb, NULL, /* handler callback */
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+ MHD_OPTION_EXTERNAL_LOGGER,
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+ error_cb, NULL,
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+ (connection_pool
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+ ? MHD_OPTION_THREAD_POOL_SIZE
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+ : MHD_OPTION_END),
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+ (connection_pool
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+ ? (int)connection_pool
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+ : MHD_OPTION_END),
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+ MHD_OPTION_END);
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+ if (d4 == NULL)
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+ {
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+ sqlite3 *database = db;
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+ sqlite3 *databaseq = dbq;
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+ db = dbq = 0; // for signal_handler not to freak
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+ sqlite3_close (databaseq);
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+ sqlite3_close (database);
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+ error (EXIT_FAILURE, 0, "cannot start http server at port %d",
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+ http_port);
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+ }
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- obatched(clog) << "started http server on IPv4 IPv6 "
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+ }
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+ obatched(clog) << "started http server on"
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+ << (d4 != NULL ? " IPv4 " : " IPv4 IPv6 ")
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<< "port=" << http_port << endl;
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// add maxigroom sql if -G given
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@@ -4053,6 +4080,7 @@ main (int argc, char *argv[])
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/* Stop all the web service threads. */
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if (d46) MHD_stop_daemon (d46);
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+ if (d4) MHD_stop_daemon (d4);
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if (! passive_p)
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{
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