HTTP 异常 :: 无法连接到任何已解析的端点 - cpprestsdk
HTTP Exception :: Failed to connect to any resolved endpoint - cpprestsdk
我正在尝试使用 Microsoft's cpprestsdk,但出现此错误:
HTTP Exception :: Failed to connect to any resolved endpoint Code ::
101
这是我的代码:
#include <cpprest/http_client.h>
#include <cpprest/filestream.h>
using namespace utility; // Common utilities like string conversions
using namespace web; // Common features like URIs.
using namespace web::http; // Common HTTP functionality
using namespace web::http::client; // HTTP client features
using namespace concurrency::streams; // Asynchronous streams
int main(int argc, char* argv[])
{
auto fileStream = std::make_shared<ostream>();
// Open stream to output file.
pplx::task<void> requestTask = fstream::open_ostream(U("results.html")).then([=](ostream outFile)
{
*fileStream = outFile;
// Create http_client to send the request.
http_client client(U("http://www.bing.com/"));
// Build request URI and start the request.
uri_builder builder(U("search"));
builder.append_query(U("q"), U("cpprestsdk github"));
return client.request(methods::GET, builder.to_string());
})
// Handle response headers arriving.
.then([=](http_response response)
{
printf("Received response status code:%u\n", response.status_code());
// Write response body into the file.
return response.body().read_to_end(fileStream->streambuf());
})
// Close the file stream.
.then([=](size_t)
{
return fileStream->close();
});
// Wait for all the outstanding I/O to complete and handle any exceptions
try
{
requestTask.wait();
}
catch (web::http::http_exception &e)
{
printf("HTTP Exception :: %s\nCode :: %d\n", e.what(), e.error_code());
}
catch (const std::exception &e)
{
printf("Error exception:%s\n", e.what());
}
return 0;
}
来源:https://github.com/Microsoft/cpprestsdk/wiki/Getting-Started-Tutorial
我用了这个
g++ -std=c++11 my_file.cpp -o my_file -lboost_system -lcrypto -lssl -lcpprest
./my_file
构建我的代码。
但我收到错误代码 101。出了什么问题?
cpprest 在你的情况下使用 boost asio [1] ,这是 asio::error::network_unreachable
101。确保您可以访问互联网(例如尝试 ping url)。
如果您使用代理访问互联网,您需要在 http_client
:
中进行配置
web::http::client::http_client_config cfg;
cfg.set_proxy(web::web_proxy(U("enter your proxy url here")));
// and passing in the to the client constructor
http_client client(U("http://www.bing.com/"), cfg);
我正在尝试使用 Microsoft's cpprestsdk,但出现此错误:
HTTP Exception :: Failed to connect to any resolved endpoint Code :: 101
这是我的代码:
#include <cpprest/http_client.h>
#include <cpprest/filestream.h>
using namespace utility; // Common utilities like string conversions
using namespace web; // Common features like URIs.
using namespace web::http; // Common HTTP functionality
using namespace web::http::client; // HTTP client features
using namespace concurrency::streams; // Asynchronous streams
int main(int argc, char* argv[])
{
auto fileStream = std::make_shared<ostream>();
// Open stream to output file.
pplx::task<void> requestTask = fstream::open_ostream(U("results.html")).then([=](ostream outFile)
{
*fileStream = outFile;
// Create http_client to send the request.
http_client client(U("http://www.bing.com/"));
// Build request URI and start the request.
uri_builder builder(U("search"));
builder.append_query(U("q"), U("cpprestsdk github"));
return client.request(methods::GET, builder.to_string());
})
// Handle response headers arriving.
.then([=](http_response response)
{
printf("Received response status code:%u\n", response.status_code());
// Write response body into the file.
return response.body().read_to_end(fileStream->streambuf());
})
// Close the file stream.
.then([=](size_t)
{
return fileStream->close();
});
// Wait for all the outstanding I/O to complete and handle any exceptions
try
{
requestTask.wait();
}
catch (web::http::http_exception &e)
{
printf("HTTP Exception :: %s\nCode :: %d\n", e.what(), e.error_code());
}
catch (const std::exception &e)
{
printf("Error exception:%s\n", e.what());
}
return 0;
}
来源:https://github.com/Microsoft/cpprestsdk/wiki/Getting-Started-Tutorial
我用了这个
g++ -std=c++11 my_file.cpp -o my_file -lboost_system -lcrypto -lssl -lcpprest
./my_file
构建我的代码。 但我收到错误代码 101。出了什么问题?
cpprest 在你的情况下使用 boost asio [1] ,这是 asio::error::network_unreachable
101。确保您可以访问互联网(例如尝试 ping url)。
如果您使用代理访问互联网,您需要在 http_client
:
web::http::client::http_client_config cfg;
cfg.set_proxy(web::web_proxy(U("enter your proxy url here")));
// and passing in the to the client constructor
http_client client(U("http://www.bing.com/"), cfg);