libcurl | 易学教程

Is there any way to change the SONAME of a binary directly？

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问题 My program depends on libcurl.so.3 , but in RHEL6 there is no symbolic link libcurl.so.3 ⇾ libcurl.so.4 (my program can run smoothly when I create this link). However, there is symbolic link libcurl.so ⇾ libcurl.so.4 . I would like to modify the SONAME embedded in libcurl.so.3.0.0.0 file from libcurl.so.3 to libcurl.so so that I could run my program on RHEL 6 without creating a symbolic link. My solution could not be optimal but I think learning how to modify the binary directly is valuable.

Make parallel libcurl HTTP requests

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问题 I have a question regarding the safety of performing parallel HTTP-requests using libcurl (C++). When reading this question, please bear in mind I have limited knowledge about HTTP-requests in general. Basically, let's say I have two (or more) threads, each thread makes a HTTP-request once per second. (All the requests made are to the same server). How does my program (or something else?) keep track of what HTTP-response belongs to which tread? I mean, can I be sure that if request A was sent

Make parallel libcurl HTTP requests

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CURL for WAMP

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问题 I’m new to PHP and I’m trying to learn how to parse information, I’m trying to use CURL but I’m not able to install it on my desktop WAMP on Windows Vista. How do I install CURL? 回答1: There seems to be a bug somewhere. If you are experiencing this on Windows 7 64 bit then try installing Apache addon version 2.2.9 and PHP addon version 5.3.1 and switching to those in WAMP and then activating the CURL extension. That worked for me. You can download it from http://www.wampserver.com/en/. 回答2:

CURL for WAMP

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C++开源网络库（Socket library）

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(1)ACE 庞大、复杂，适合大型项目。开源、免费，不依赖第三方库，支持跨平台。 http://www.cs.wustl.edu/~schmidt/ACE.html http://download.dre.vanderbilt.edu/ (2)Asio Asio基于Boost开发的异步IO库，封装了Socket，简化基于socket程序的开发。开源、免费，支持跨平台。 http://think-async.com/ (3)POCO POCO C++ Libraries 提供一套 C++ 的类库用以开发基于网络的可移植的应用程序，功能涉及线程、线程同步、文件系统访问、流操作、共享库和类加载、套接字以及网络协议包括：HTTP、 FTP、SMTP 等；其本身还包含一个 HTTP 服务器，提供 XML 的解析和 SQL 数据库的访问接口。POCO库的模块化、高效的设计及实现使得POCO特别适合嵌入式开发。在嵌入式开发领域，由于C++既适合底层（设备I/O、中断处理等）和高层面向对象开发，越来越流行。 http://pocoproject.org/ (4)libevent Libevent是一个轻量级的开源高性能网络库，从它的官网标题：libevent-an event notification library就能知道它的机制是采用事件触发，封装了以下三种事件的响应:IO事件

Some error while performing string operations

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问题 Below is my code: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <json/json.h> #include <curl/curl.h> #include <sys/types.h> #include <db.h> #define DATABASE "access.db" int db_json(char *val, char *key1); void json_parse(char* str); struct MemoryStruct { char *memory; size_t size; }; char *begin = "<return>"; char *end = "</return>"; char *token; char *json; char *newstr = NULL; char *str = NULL; char *str1 = NULL; char *str2 = NULL; char *str3 = NULL; char *finalstr =

libCurl. Cancel request while proceed

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问题 UPDATED: Problem was not in libcurl. The right way to cancel request if to return from callback non-zero value. I used curl_progress_callback function, and everything works fine. 回答1: What you need to understand is that CURL is a C library. In general, you cannot pass pointers to C++ objects or functions because C does not know anything about C++'s classes and calling convention. For example, this line is incorrect: curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorBuffer); CURL setopt CURLOPT

Compiling WWW::Curl on ActivePerl

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问题 I'm trying (desperately) to build / install the newest version of WWW::Curl onto my activeperl box (I'll explain in a moment why I don't use the PPM) I had to make some modifications as per the instructions found here: http://cpansearch.perl.org/src/SZBALINT/WWW-Curl-4.15/README.Win32 I also had to change the following line: From: open(H_IN, "-|" "gcc", "$curl_h") and $has_cpp++; To: open(H_IN, "gcc $curl_h") and $has_cpp++; I finally got perl Makefile.PL to work but now, when I run nmake, I

Idling thread between curl_multi_perform

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问题 I have an update thread which runs curl_multi_perform in a while loop in it. I want to make sure the thread doesn't just sit there and spin, so I'd like to throttle it to a few updates per second. This works fine, except for when doing file uploads or downloads on 10+ MB files, when curl_multi_perform has to be called pretty much continuously to get around the upload/download chunk limit. Is there a way to poll if curl_multi_perform will need to be called right away again in the next update