http2d: Initial version

New "http2d" module, providing an RFC 7540/9113 HTTP/2 server
implementation, based on "nghttp2" library (https://nghttp2.org/).

modules/http2d/Makefile

@@ -0,0 +1,11 @@
+# WARNING: do not run this directly, it should be run by the master Makefile
+
+include ../../Makefile.defs
+auto_gen=
+NAME=http2d.so
+
+#DEFS +=-I$(LOCALBASE)/include
+LIBS +=-L$(LOCALBASE)/lib -lssl -lcrypto -levent -lnghttp2 -levent_openssl
+
+include ../../Makefile.modules
+

modules/http2d/http2d.c

@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2024 OpenSIPS Solutions
+ *
+ * This file is part of opensips, a free SIP server.
+ *
+ * opensips is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * opensips is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "../../globals.h"
+#include "../../sr_module.h"
+#include "../../str.h"
+#include "../../ut.h"
+#include "../../mem/mem.h"
+
+#include "server.h"
+
+/* module functions */
+static int mod_init();
+static void mod_destroy(void);
+
+unsigned int h2_port = 9111;
+char *h2_ip;
+str h2_tls_cert = STR_NULL;
+str h2_tls_key = STR_NULL;
+
+
+static const proc_export_t procs[] = {
+	{"HTTP2D",  0,  0, http2_server, 1, PROC_FLAG_INITCHILD },
+	{NULL, 0, 0, NULL, 0, 0}
+};
+
+/* Module parameters */
+static const param_export_t params[] = {
+	{"port",          INT_PARAM, &h2_port},
+	{"ip",            STR_PARAM, &h2_ip},
+	{"tls_cert_file", STR_PARAM, &h2_tls_cert.s},
+	{"tls_key_file", STR_PARAM,  &h2_tls_key.s},
+	{NULL, 0, NULL}
+};
+
+/* MI commands */
+static const mi_export_t mi_cmds[] = {
+	{EMPTY_MI_EXPORT},
+};
+
+/* Module exports */
+struct module_exports exports = {
+	"http2d",                   /* module name */
+	MOD_TYPE_DEFAULT,           /* class of this module */
+	MODULE_VERSION,
+	DEFAULT_DLFLAGS,            /* dlopen flags */
+	0,                          /* load function */
+	NULL,                       /* OpenSIPS module dependencies */
+	NULL,                       /* exported functions */
+	0,                          /* exported async functions */
+	params,                     /* exported parameters */
+	NULL,                       /* exported statistics */
+	mi_cmds,                    /* exported MI functions */
+	NULL,                       /* exported PV */
+	NULL,                       /* exported transformations */
+	procs,                      /* extra processes */
+	0,                          /* module pre-initialization function */
+	mod_init,                   /* module initialization function */
+	(response_function) NULL,   /* response handling function */
+	(destroy_function) mod_destroy, /* destroy function */
+	NULL,                       /* per-child init function */
+	NULL                        /* reload confirm function */
+};
+
+
+static int mod_init(void)
+{
+	if (!h2_tls_cert.s) {
+		LM_ERR("no TLS cert filepath provided (mandatory)\n");
+		return -1;
+	}
+
+	if (!h2_tls_key.s) {
+		LM_ERR("no TLS key filepath provided (mandatory)\n");
+		return -1;
+	}
+
+	if (!h2_ip)
+		h2_ip = "127.0.0.1";
+
+	h2_tls_cert.len = strlen(h2_tls_cert.s);
+	h2_tls_key.len = strlen(h2_tls_key.s);
+
+	return 0;
+}
+
+
+static void mod_destroy(void)
+{
+	return;
+}