add 2 curl examples

1 files changed, 59 insertions, 0 deletions

diff --git a/curl_tofile.c b/curl_tofile.c
new file mode 100644
index 0000000..7cd25ca
--- /dev/null
+++ b/curl_tofile.c
@@ -0,0 +1,59 @@
+#include <stdio.h>
+#include <curl/curl.h>
+
+size_t write_data(char *ptr, size_t size, size_t nmemb, void *userdata)
+{
+    /* return size * nmemb; */
+    return fwrite(ptr, size, nmemb, (FILE *) userdata);
+}
+
+int main(int argc, char **argv)
+{
+    if (argc != 2)
+    {
+        fprintf(stderr, "usage: %s <url>\n", argv[0]);
+        return 1;
+    }
+
+    CURL *curl_handle;
+    CURLcode ret;
+
+    curl_handle = curl_easy_init();
+    if (curl_handle)
+    {
+        curl_easy_setopt(curl_handle, CURLOPT_URL, argv[1]);
+        curl_easy_setopt(curl_handle, CURLOPT_HEADER, 1L);
+        /* some servers don't like requests that are made without a user-agent
+         * field, so we provide one */ 
+        curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
+        char err_buff[CURL_ERROR_SIZE];
+        curl_easy_setopt(curl_handle, CURLOPT_ERRORBUFFER, err_buff);
+        /* send all data to this function  */
+        curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
+
+        /* by default passes NULL aka stdout */
+        FILE *fl;
+        if ((fl = fopen("dump.curl", "w")))
+            curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, fl);
+        else
+            curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, stdout);
+
+        if ((ret = curl_easy_perform(curl_handle)) != CURLE_OK)
+            fprintf(stderr, "%s\n", err_buff);
+        else
+        {
+            /* ask for the content-type */
+            char *ct;
+            ret = curl_easy_getinfo(curl_handle, CURLINFO_CONTENT_TYPE, &ct);
+            if ((CURLE_OK == ret) && ct)
+                printf("Content-Type: %s\n", ct);
+        }
+
+        /* always cleanup */
+        fclose(fl);
+        curl_easy_cleanup(curl_handle);
+    }
+
+    return 0;
+}
+