One of my friend asked me if there was a tool to send pipelined http request from linux command line. Thanks to cURL libcurl, I developed a small tool to do the same. Have put in some basic validations and some restrictions like the maximum no of pipeline request is 32 etc
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | /* * Ahamed * Using cURL libcurl * * For sending pipelined http requests * Usage : ./send_pipelined_http <no of pipelined requests> <http://x.x.x.x> * Some basic validations added. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <curl/curl.h> static void usage(); #define ERR_LEN 512 #define MIN_URL_LEN 14 #define MAX_URL_LEN 32 #define MIN_PIPELINE_REQ 1 #define MAX_PIPELINE_REQ 32 #define err(x, y) {printf("\nError: %s...\nExiting...\n", x); if(y)exit(0); usage();} static unsigned int pipeline_req; static char url[MAX_URL_LEN]; static char err_str[ERR_LEN]; static void handle_curl_error(CURLcode ret, char *func) { if(ret != CURLE_OK){ fprintf(stderr, "%s() failed: %s\n", func, curl_multi_strerror(ret)); } return; } static void usage() { printf("\nDeveloped by Ahamed using cURL API via libcurl\n"); printf("Usage : ./send_pipelined_http <no of req> <http://x.x.x.x>\n"); printf(" Pipeline Request - Min %d : Max : %d\n", MIN_PIPELINE_REQ, MAX_PIPELINE_REQ); printf(" Hostname not supported yet. Please provide IP address.\n"); printf(" URL - Min Length %d : Max Length : %d\n\n", MIN_URL_LEN, MAX_URL_LEN); exit(0); } static void parse_args(int argc, char **argv) { if(argc <= 2) err("Insufficient arguments", 0); if(!argv) err("Something unexpected happened", 1); pipeline_req = atol(argv[1]); if(pipeline_req > MAX_PIPELINE_REQ || pipeline_req < MIN_PIPELINE_REQ) err("Invalid Pipeline Request", 0); if(strlen(argv[2]) > MAX_URL_LEN || strlen(argv[2]) < MIN_URL_LEN) err("Invalid URL length", 0); strncpy(url, argv[2], MAX_URL_LEN); return; } int main(int argc, char **argv) { int i=0; parse_args(argc, argv); CURLM *m_curl; CURLMcode res; m_curl = curl_multi_init(); curl_multi_setopt(m_curl, CURLMOPT_PIPELINING, 1L); CURL *curl[MAX_PIPELINE_REQ]; for(i=0; i<pipeline_req; i++){ curl[i] = curl_easy_init(); if(!curl[i]) err("Something went wrong", 0); res = curl_easy_setopt(curl[i], CURLOPT_URL, url); handle_curl_error(res, "curl_easy_setopt"); res = curl_easy_setopt(curl[i], CURLOPT_FOLLOWLOCATION, 1L); handle_curl_error(res, "curl_easy_setopt"); res = curl_multi_add_handle(m_curl, curl[i]); handle_curl_error(res, "curl_multi_add_handle"); } int ret = 1; do { res = curl_multi_perform(m_curl, &ret); } while(ret); handle_curl_error(res, (char*)__FUNCTION__); for(i=0; i<pipeline_req; i++){ curl_multi_remove_handle(m_curl, curl[i]); curl_easy_cleanup(curl[i]); } curl_multi_cleanup(m_curl); return 0; } |
root@Imperfecto_maximuS> gcc send_pipelined_http.c -lcurl -o send_pipelined_http root@Imperfecto_maximuS> ./send_pipelined_http Error: Insufficient arguments... Exiting... Developed by Ahamed(ahamed.en@gmail.com) using cURL API via libcurl Usage : ./send_pipelined_http <no of req> <http://x.x.x.x> Pipeline Request - Min 1 : Max : 32 Hostname not supported yet. Please provide IP address. URL - Min Length 14 : Max Length : 32 root@Imperfecto_maximuS> ./send_pipelined_http 3 http://11.1.1.99 <html><body><h1>This is sample page</h1>\0<p>for testing created...</p></body></html> <html><body><h1>This is sample page</h1>\0<p>for testing created...</p></body></html> <html><body><h1>This is sample page</h1>\0<p>for testing created...</p></body></html>
