如何使用 TcpClient 向网站发出请求
How to make a request to a website with TcpClient
我正在尝试使用 TcpClient 向网站发出请求,但我无法让它工作。首先,我与 remoteHost 建立连接并写入 requestStr-variable 中的请求 headers。之后我从远程流中读取并期望得到响应,但我什么也没得到。我还使用 while 循环中的代码从浏览器接收请求 headers,该浏览器使用我的应用程序作为代理并且工作正常。
Eol 变量是 \r\n
。
requestStr 变量是:
GET http://steam.com/ HTTP/1.1
Host: steam.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: nl,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: keep-alive
代码片段:
TcpClient remoteClient = new TcpClient(request.GetRemoteHost(), 80);
byte[] remoteRequest = Encoding.UTF8.GetBytes(requestStr);
NetworkStream remoteStream = remoteClient.GetStream();
remoteStream.Write(remoteRequest, 0, remoteRequest.Length);
remoteStream.Flush();
int j;
string remoteStr = "";
byte[] remoteBuffer = new byte[App.BufferSize];
recvRequest = true;
while (recvRequest && (j = remoteStream.Read(remoteBuffer, 0, remoteBuffer.Length)) != 0) {
string receivedData = Encoding.ASCII.GetString(remoteBuffer, 0, j);
if (receivedData.IndexOf(Eol) < 0) {
remoteStr += receivedData;
} else {
remoteStr += receivedData.Substring(0, receivedData.IndexOf(Eol + Eol));
recvRequest = false;
}
}
MessageBox.Show(remoteStr);
查看您发送的请求,您没有在其末尾包含 a blank line(仍以 \r\n 结尾)。这标志着 headers 的结束,因此服务器知道它已经收到所有这些并且可以处理请求。
我正在尝试使用 TcpClient 向网站发出请求,但我无法让它工作。首先,我与 remoteHost 建立连接并写入 requestStr-variable 中的请求 headers。之后我从远程流中读取并期望得到响应,但我什么也没得到。我还使用 while 循环中的代码从浏览器接收请求 headers,该浏览器使用我的应用程序作为代理并且工作正常。
Eol 变量是 \r\n
。
requestStr 变量是:
GET http://steam.com/ HTTP/1.1
Host: steam.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: nl,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: keep-alive
代码片段:
TcpClient remoteClient = new TcpClient(request.GetRemoteHost(), 80);
byte[] remoteRequest = Encoding.UTF8.GetBytes(requestStr);
NetworkStream remoteStream = remoteClient.GetStream();
remoteStream.Write(remoteRequest, 0, remoteRequest.Length);
remoteStream.Flush();
int j;
string remoteStr = "";
byte[] remoteBuffer = new byte[App.BufferSize];
recvRequest = true;
while (recvRequest && (j = remoteStream.Read(remoteBuffer, 0, remoteBuffer.Length)) != 0) {
string receivedData = Encoding.ASCII.GetString(remoteBuffer, 0, j);
if (receivedData.IndexOf(Eol) < 0) {
remoteStr += receivedData;
} else {
remoteStr += receivedData.Substring(0, receivedData.IndexOf(Eol + Eol));
recvRequest = false;
}
}
MessageBox.Show(remoteStr);
查看您发送的请求,您没有在其末尾包含 a blank line(仍以 \r\n 结尾)。这标志着 headers 的结束,因此服务器知道它已经收到所有这些并且可以处理请求。