ABULIUS, MUGUR (MUGUR) wrote: >>... http://curl.haxx.se/libcurl/c/simple.html <http://curl.haxx.se/libcurl/c/simple.html> . >> 1) Which TCP port# is used by the HTTP request in this example?
The standard one: 80 >> 2) Is this TCP port# coming from "/etc/services"? No, it comes from internal tables. >> 2) There is any way to specify an external parameter (e.g.. environment variables or configuration file) to allow 2 different running instances of this same "simple.c" program to use different TCP ports for the HTTP request? Not without modifying the simple.c program, but you have 2 ways to provide a port number: 1) Using the standard URL notation: http://www.example.com:portno 2) With curl_easy_setopt(curl, CURLOPT_PORT, (long) portno); For example: use int main(int argc, char * * argv) { CURL *curl; CURLcode res; curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "http://example.com";); curl_easy_setopt(curl, CURLOPT_PORT, atol(argv[1])); /* Perform the request, res will get the return code */ res = curl_easy_perform(curl); /* Check for errors */ if(res != CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); /* always cleanup */ curl_easy_cleanup(curl); } return 0; } And pass the port number as single argument while launching the program. ------------------------------------------------------------------- List admin: http://cool.haxx.se/list/listinfo/curl-library Etiquette: http://curl.haxx.se/mail/etiquette.html
