chore: change the connection timeout period to 5 seconds

Users can set the timeout period using environment variables `LINGLONG_CONNECT_TIMEOUT`.

Signed-off-by: ice909 <[email protected]>

Author: ice909

external/http/src/apiClient.c

@@ -437,8 +437,19 @@ void apiClient_invoke(apiClient_t    *apiClient,
                          apiClient);
         curl_easy_setopt(handle, CURLOPT_HTTPHEADER, headers);
         curl_easy_setopt(handle, CURLOPT_VERBOSE, 0); // to get curl debug msg 0: to disable, 1L:to enable
-        curl_easy_setopt(handle, CURLOPT_CONNECTTIMEOUT, 1);
-
+        const char *timeout_str = getenv("LINGLONG_CONNECT_TIMEOUT");
+        long timeout = 5;
+        if (timeout_str != NULL) {
+            char *endptr;
+            timeout = strtol(timeout_str, &endptr, 10);
+
+            if (endptr == timeout_str || *endptr != '\0') {
+                timeout = 5;
+            } else if (timeout <= 0 || timeout > INT_MAX) {
+                timeout = 5;
+            }
+        }
+        curl_easy_setopt(handle, CURLOPT_CONNECTTIMEOUT, timeout);
 
         if(bodyParameters != NULL) {
             postData(handle, bodyParameters);

libs/linglong/src/linglong/repo/ostree_repo.cpp

@@ -1480,7 +1480,9 @@ OSTreeRepo::listRemote(const package::FuzzyReference &fuzzyRef) const noexcept
     }
 
     if (response == nullptr) {
-        return LINGLONG_ERR("failed to send request to remote server");
+        return LINGLONG_ERR("failed to send request to remote server\nIf the network is slow, "
+                            "set a longer timeout via the LINGLONG_CONNECT_TIMEOUT environment "
+                            "variable (current default: 5 seconds).");
     }
     auto freeResponse = utils::finally::finally([&response] {
         fuzzy_search_app_200_response_free(response);
@@ -1489,7 +1491,10 @@ OSTreeRepo::listRemote(const package::FuzzyReference &fuzzyRef) const noexcept
     if (response->code != 200) {
         QString msg = (response->msg != nullptr)
           ? response->msg
-          : QString{ "cannot send request to remote server: %1" }.arg(response->code);
+          : QString{ "cannot send request to remote server: %1\nIf the network is slow, "
+                     "set a longer timeout via the LINGLONG_CONNECT_TIMEOUT environment "
+                     "variable (current default: 5 seconds)." }
+              .arg(response->code);
         return LINGLONG_ERR(msg);
     }
 

tools/openapi-c-libcurl-client/apiClient.c.mustache

@@ -494,7 +494,19 @@ void apiClient_invoke(apiClient_t    *apiClient,
                          apiClient);
         curl_easy_setopt(handle, CURLOPT_HTTPHEADER, headers);
         curl_easy_setopt(handle, CURLOPT_VERBOSE, 0); // to get curl debug msg 0: to disable, 1L:to enable
-        curl_easy_setopt(handle, CURLOPT_CONNECTTIMEOUT, 1);
+        const char *timeout_str = getenv("LINGLONG_CONNECT_TIMEOUT");
+        long timeout = 5;
+        if (timeout_str != NULL) {
+            char *endptr;
+            timeout = strtol(timeout_str, &endptr, 10);
+
+            if (endptr == timeout_str || *endptr != '\0') {
+                timeout = 5;
+            } else if (timeout <= 0 || timeout > INT_MAX) {
+                timeout = 5;
+            }
+        }
+        curl_easy_setopt(handle, CURLOPT_CONNECTTIMEOUT, timeout);
 
         {{#hasAuthMethods}}
         {{#authMethods}}