libcurl

问题 How do I get the HTTP status code (eg 200 or 500) after calling curl_easy_perform? 回答1: http://curl.haxx.se/libcurl/c/curl_easy_getinfo.html CURLINFO_RESPONSE_CODE Pass a pointer to a long to receive the last received HTTP or FTP code. This option was known as CURLINFO_HTTP_CODE in libcurl 7.10.7 and earlier. This will be zero if no server response code has been received. Note that a proxy's CONNECT response should be read with CURLINFO_HTTP_CONNECTCODE and not this. curl_code = curl_easy

问题 I am writing a piece of software, and It require me to handle data I get from a webpage with libcurl. When I get the data, for some reason it has extra line breaks in it. I need to figure out a way to only allow letters, numbers, and spaces. And remove everything else, including line breaks. Is there any easy way to do this? Thanks. 回答1: Write a function that takes a char and returns true if you want to remove that character or false if you want to keep it: bool my_predicate(char c); Then use

问题 I'm implementing a C program which needs to read a remote file's size from the Content-Length header (when Content-Length is sent in the response headers). I've looked over libcurl's docs, and the best I've been able to come up with so far has been a callback function for the CURLOPT_HEADERFUNCTION setting. I've put together a toy implementation of a callback, which is supposed to print the headers to STDOUT : size_t hdf(char* b, size_t size, size_t nitems, void *userdata) { printf("%s", b);

问题 Is there a way that I can cancel a curl_easy_perform in C++?? I have a scenario where I am trying to connect to network resource that is offline and the curl_easy_perform take a certain amount of time before it returns CURLE_COULDNT_CONNECT . But in the meantime the user has closed the UI that wishes to connect and I want to immediatley cut off the curl connection and not have to wait for it to fail to connect. I have tried storing the curl pointer that I use: CURL *pEasy = curl_easy_init ();

问题 Recently I am trying to link libcurl with dev c++ statically.I linked all the .a files except libcurldll.a file which came from libcurl and I defined CURL_STATICLIB . But I received some linker errors. Then I searched google for the solution of this linker error, there I found that "libwsock32.a" should be linked. And finally I linked libwsock32.a. But I am still receiving different linker errors... Errors are like.... [Linker error] undefined reference to `_imp__ldap_set_optionA' [Linker

问题 I'm working on a program which will download lyrics from sites like AZLyrics. I'm using libcurl. It's my code lyricsDownloader.cpp #include "lyricsDownloader.h" #include <curl/curl.h> #include <cstring> #include <iostream> #define DEBUG 1 ///////////////////////////////////////////////////////////////////////////// size_t lyricsDownloader::write_data_to_var(char *ptr, size_t size, size_t nmemb, void *userdata) // this function is a static member function { ostringstream * stream =

问题 I am making a configure.ac file which checks for library dependency. The complete code is, AC_CONFIG_AUX_DIR([build-aux]) AC_INIT([myprogram], [0.1], []) AM_INIT_AUTOMAKE AC_PROG_CC AC_CHECK_LIB([curl], [curl_easy_setopt], [echo "libcurl library is present" > /dev/tty], [echo "libcurl library is not present" > /dev/tty] ) AC_CHECK_LIB([sqlite3], [sqlite3_open], [echo "sqlite3 library is present" > /dev/tty], [echo "sqlite library is not present" > /dev/tty] ) AC_CHECK_LIB([pthread], [pthread

问题 I have the next code: $c = curl_init(); curl_setopt($c, CURLOPT_URL, 'http://www.mydomain.com/test.php'); curl_setopt($c, CURLOPT_POST, true); curl_setopt($c, CURLOPT_POSTFIELDS,"First Name=Jhon&Last Name=bt"); curl_exec ($c); curl_close ($c); My problem is with the spaces in this code: "First Name=Jhon&Last Name=bt" I tried the next code: $test=rawurlencode("First Name=Jhon&Last Name=bt"); $c = curl_init(); curl_setopt($c, CURLOPT_URL, 'http://www.mydomain.com/test.php'); curl_setopt($c,

问题 Let me explain in more detail. I'm trying to write a program that downloads a file from a remote FTP server, appends one line to the end of it, and then re-uploads it. The file operations work, and the text is appended to the file and re-uploaded, but when I download the file again, no text was appended. I've written a small test program to demonstrate this; here's the code at Pastebin: http://pastebin.com/r07TkxEK The program prints the following output on both the initial run and subsequent

问题 After much struggling, I managed to setup this Android NDK project on eclipse: https://github.com/gcesarmza/curl-android-ios ...and now it runs. All it does is connect to www.google.com: This is the curl call I make in the Main Activity: String url = "https://www.google.com"; byte[] content = downloadUrl(url); I am new to NDK an this CURL library, how can I execute a more complex CURL request such as this file upload command??? : curl -F file=@audio.wav http://myserver.com 回答1: The test