SRS5: Refine default config file for SRS. v5.0.120

1. Docker use srs.conf and env variables.
2. Show help if run SRS without any options.
3. Do not guess config file, use whatever from user.

PICK 07a9a005d5

trunk/Dockerfile

@@ -56,4 +56,6 @@ RUN ldd /usr/local/srs/objs/ffmpeg/bin/ffmpeg && \
 
 # Default workdir and command.
 WORKDIR /usr/local/srs
-CMD ["./objs/srs", "-c", "conf/docker.conf"]
+ENV SRS_SRS_LOG_TANK=console SRS_DAEMON=off
+CMD ["./objs/srs", "-c", "conf/srs.conf"]
+

trunk/conf/full.conf

@@ -193,10 +193,10 @@ http_api {
         # default: off
         enabled off;
         # whether enable rpc reload.
+        # Overwrite by env SRS_HTTP_API_RAW_API_ALLOW_RELOAD
         # default: off
         allow_reload off;
         # whether enable rpc query.
-        # Overwrite by env SRS_HTTP_API_RAW_API_ALLOW_RELOAD
         # Always off by https://github.com/ossrs/srs/issues/2653
         #allow_query off;
         # whether enable rpc update.

trunk/doc/CHANGELOG.md

@@ -24,6 +24,7 @@ The changelog for SRS.
 
 ## SRS 5.0 Changelog
 
+* v5.0, 2022-12-31, Refine default config file for SRS. v5.0.120
 * v5.0, 2022-12-26, For [#939](https://github.com/ossrs/srs/issues/939): FLV: Fix bug for header flag gussing. v5.0.119
 * v5.0, 2022-12-26, For [#296](https://github.com/ossrs/srs/issues/296): MP3: Convert RTMP(MP3) to WebRTC(OPUS). v5.0.118
 * v5.0, 2022-12-25, For [#296](https://github.com/ossrs/srs/issues/296): MP3: Support dump stream information. v5.0.117

trunk/src/app/srs_app_config.cpp

@@ -1837,8 +1837,8 @@ srs_error_t SrsConfig::parse_options(int argc, char** argv)
         }
     }
     
-    // Show help if has any argv
-    show_help = argc > 1;
+    // Show help if it has no argv
+    show_help = argc == 1;
     for (int i = 1; i < argc; i++) {
         if ((err = parse_argv(i, argv)) != srs_success) {
             return srs_error_wrap(err, "parse argv");
@@ -1858,56 +1858,24 @@ srs_error_t SrsConfig::parse_options(int argc, char** argv)
         fprintf(stdout, "%s\n", RTMP_SIG_SRS_SERVER);
         exit(0);
     }
-    
-    // first hello message.
+
+    // The first hello message.
     srs_trace(_srs_version);
 
     // Config the env_only_ by env.
     if (getenv("SRS_ENV_ONLY")) env_only_ = true;
 
-    // Try config files as bellow:
-    //      User specified config(not empty), like user/docker.conf
-    //      If user specified *docker.conf, try *srs.conf, like user/srs.conf
-    //      Try the default srs config, defined as SRS_CONF_DEFAULT_COFNIG_FILE, like conf/srs.conf
-    //      Try config for FHS, like /etc/srs/srs.conf @see https://github.com/ossrs/srs/pull/2711
-    if (!env_only_) {
-        vector<string> try_config_files;
-        if (!config_file.empty()) {
-            try_config_files.push_back(config_file);
-        }
-        if (srs_string_ends_with(config_file, "docker.conf")) {
-            try_config_files.push_back(srs_string_replace(config_file, "docker.conf", "srs.conf"));
-        }
-        try_config_files.push_back(SRS_CONF_DEFAULT_COFNIG_FILE);
-        try_config_files.push_back("/etc/srs/srs.conf");
-
-        // Match the first exists file.
-        string exists_config_file;
-        for (int i = 0; i < (int) try_config_files.size(); i++) {
-            string try_config_file = try_config_files.at(i);
-            if (srs_path_exists(try_config_file)) {
-                exists_config_file = try_config_file;
-                break;
-            }
-        }
-
-        if (exists_config_file.empty()) {
-            return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "no config file at %s", srs_join_vector_string(try_config_files, ", ").c_str());
-        }
-
-        if (config_file != exists_config_file) {
-            srs_warn("user config %s does not exists, use %s instead", config_file.c_str(), exists_config_file.c_str());
-            config_file = exists_config_file;
-        }
-    }
-
     // Overwrite the config by env SRS_CONFIG_FILE.
-    if (!srs_getenv("srs.config.file").empty()) {
-        string ov = config_file;
-        config_file = srs_getenv("srs.config.file");
+    if (!env_only_ && !srs_getenv("srs.config.file").empty()) { // SRS_CONFIG_FILE
+        string ov = config_file; config_file = srs_getenv("srs.config.file");
         srs_trace("ENV: Overwrite config %s to %s", ov.c_str(), config_file.c_str());
     }
 
+    // Make sure config file exists.
+    if (!env_only_ && !srs_path_exists(config_file)) {
+        return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "no config file at %s", config_file.c_str());
+    }
+
     // Parse the matched config file.
     if (!env_only_) {
         err = parse_file(config_file.c_str());

trunk/src/core/srs_core_version5.hpp

@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       5
 #define VERSION_MINOR       0
-#define VERSION_REVISION    119
+#define VERSION_REVISION    120
 
 #endif