使用 QT 的 HTTP 请求错误,但使用 CURL 的请求良好
Bad HTTP request with QT but good request with CURL
如果我从命令行使用 CURL 执行 HTTP 请求(来自 Binance docs 的示例)
curl -H "X-MBX-APIKEY: vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A" -X POST 'https://api.binance.com/api/v3/order/test' -d 'symbol=LTCBTC&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=0.1&recvWindow=5000×tamp=1499827319559&signature=c8db56825ae71d6d79447849e617115f4a920fa2acdcab2b053c4b2838bd6b71'
我得到:
{"code":-2015,"msg":"Invalid API-key, IP, or permissions for action."}
但如果我这样做
QNetworkRequest request;
request.setRawHeader(QByteArray("X-MBX-APIKEY"), QString("vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A").toUtf8());
request.setHeader(QNetworkRequest::ContentTypeHeader, QString("application/x-www-form-urlencoded"));
request.setUrl(QUrl("https://api.binance.com/api/v3/order/test"));
QByteArray postData = "symbol=LTCBTC&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=0.1&recvWindow=5000×tamp=1499827319559&signature=c8db56825ae71d6d79447849e617115f4a920fa2acdcab2b053c4b2838bd6b71";
QNetworkReply* reply = m_nm.post(request, postData);
QObject::connect(reply, &QNetworkReply::finished, [this, reply, url, func]()
{
if (reply->error())
{
qDebug() << "Error: " << reply->error() << ", Message: " << reply->errorString();
});
}
else
{
const QString answer = reply->readAll();
func(answer);
}
//Ensure it is deleted after this handler is called, but not before.
//reply->deleteLater();
delete reply;
});
我收到错误回复消息 Error: 204, Message: Host requires authentication
。
使用其他 API 键,我得到 Bad request
和 QNetworkReply::ProtocolInvalidOperationError
。
有什么区别?
编辑 1:
请求成功
request.setUrl(QUrl("https://httpbin.org/post"));
和相同的 post 数据,例如。
EDIT2:
"Accept-Encoding": "gzip, deflate",
"Accept-Language": "en-GB,*"
但他们不是。
HTTP 401 错误代码表示请求尚未执行,因为它缺少所请求资源的有效身份验证凭据,这会导致 Qt 创建错误 QNetworkReply::AuthenticationRequiredError,除此之外,信息关于响应正文中错误的原因。所以,即使有错误,也要查资料。
MWE:
#include <QtNetwork>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QNetworkAccessManager m_nm;
QNetworkRequest request;
request.setRawHeader(QByteArray("X-MBX-APIKEY"), QString("vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A").toUtf8());
request.setHeader(QNetworkRequest::ContentTypeHeader, QString("application/x-www-form-urlencoded"));
request.setUrl(QUrl("https://api.binance.com/api/v3/order/test"));
QByteArray postData = "symbol=LTCBTC&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=0.1&recvWindow=5000×tamp=1499827319559&signature=c8db56825ae71d6d79447849e617115f4a920fa2acdcab2b053c4b2838bd6b71";
QNetworkReply* reply = m_nm.post(request, postData);
QObject::connect(reply, &QNetworkReply::finished, [reply]()
{
const QString body = reply->readAll();
if (reply->error() == QNetworkReply::AuthenticationRequiredError){
qDebug() << "Error: " << reply->error() <<
", Message: " << reply->errorString() <<
", Code: " << reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() <<
", Description: " << body;
}
else if (reply->error() != QNetworkReply::NoError){
qDebug() << body;
}
reply->deleteLater();
QTimer::singleShot(1000, &QCoreApplication::quit);
});
return a.exec();
}
输出:
Error: QNetworkReply::AuthenticationRequiredError , Message: "Host requires authentication" , Code: 401 , Description: "{\"code\":-2015,\"msg\":\"Invalid API-key, IP, or permissions for action.\"}"
如果我从命令行使用 CURL 执行 HTTP 请求(来自 Binance docs 的示例)
curl -H "X-MBX-APIKEY: vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A" -X POST 'https://api.binance.com/api/v3/order/test' -d 'symbol=LTCBTC&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=0.1&recvWindow=5000×tamp=1499827319559&signature=c8db56825ae71d6d79447849e617115f4a920fa2acdcab2b053c4b2838bd6b71'
我得到:
{"code":-2015,"msg":"Invalid API-key, IP, or permissions for action."}
但如果我这样做
QNetworkRequest request;
request.setRawHeader(QByteArray("X-MBX-APIKEY"), QString("vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A").toUtf8());
request.setHeader(QNetworkRequest::ContentTypeHeader, QString("application/x-www-form-urlencoded"));
request.setUrl(QUrl("https://api.binance.com/api/v3/order/test"));
QByteArray postData = "symbol=LTCBTC&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=0.1&recvWindow=5000×tamp=1499827319559&signature=c8db56825ae71d6d79447849e617115f4a920fa2acdcab2b053c4b2838bd6b71";
QNetworkReply* reply = m_nm.post(request, postData);
QObject::connect(reply, &QNetworkReply::finished, [this, reply, url, func]()
{
if (reply->error())
{
qDebug() << "Error: " << reply->error() << ", Message: " << reply->errorString();
});
}
else
{
const QString answer = reply->readAll();
func(answer);
}
//Ensure it is deleted after this handler is called, but not before.
//reply->deleteLater();
delete reply;
});
我收到错误回复消息 Error: 204, Message: Host requires authentication
。
使用其他 API 键,我得到 Bad request
和 QNetworkReply::ProtocolInvalidOperationError
。
有什么区别?
编辑 1:
请求成功
request.setUrl(QUrl("https://httpbin.org/post"));
和相同的 post 数据,例如。
EDIT2:
"Accept-Encoding": "gzip, deflate",
"Accept-Language": "en-GB,*"
但他们不是。
HTTP 401 错误代码表示请求尚未执行,因为它缺少所请求资源的有效身份验证凭据,这会导致 Qt 创建错误 QNetworkReply::AuthenticationRequiredError,除此之外,信息关于响应正文中错误的原因。所以,即使有错误,也要查资料。
MWE:
#include <QtNetwork>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QNetworkAccessManager m_nm;
QNetworkRequest request;
request.setRawHeader(QByteArray("X-MBX-APIKEY"), QString("vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A").toUtf8());
request.setHeader(QNetworkRequest::ContentTypeHeader, QString("application/x-www-form-urlencoded"));
request.setUrl(QUrl("https://api.binance.com/api/v3/order/test"));
QByteArray postData = "symbol=LTCBTC&side=BUY&type=LIMIT&timeInForce=GTC&quantity=1&price=0.1&recvWindow=5000×tamp=1499827319559&signature=c8db56825ae71d6d79447849e617115f4a920fa2acdcab2b053c4b2838bd6b71";
QNetworkReply* reply = m_nm.post(request, postData);
QObject::connect(reply, &QNetworkReply::finished, [reply]()
{
const QString body = reply->readAll();
if (reply->error() == QNetworkReply::AuthenticationRequiredError){
qDebug() << "Error: " << reply->error() <<
", Message: " << reply->errorString() <<
", Code: " << reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() <<
", Description: " << body;
}
else if (reply->error() != QNetworkReply::NoError){
qDebug() << body;
}
reply->deleteLater();
QTimer::singleShot(1000, &QCoreApplication::quit);
});
return a.exec();
}
输出:
Error: QNetworkReply::AuthenticationRequiredError , Message: "Host requires authentication" , Code: 401 , Description: "{\"code\":-2015,\"msg\":\"Invalid API-key, IP, or permissions for action.\"}"