HttpWebRequest , HttpClient 방식 GET, POST, PUT 등 테스트

테스트 1차

HttpWebRequest 방식

파일 업로드 부분이 까다로움.. 따로 다 (내용을 붙여 주어야 함)

public static string GetURIRequestImageUpload(string uri, string postParam = null, string cookieValue = null, Encoding encoding = null, string contentType = null, string credentials = null, string headerName = null, string headerValue = null, string method = null, string saveFile = null, System.IO.Stream saveFileSteam = null, int fileLength = 0)
{

        if (encoding == null) encoding = Encoding.UTF8;

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);

        if (!string.IsNullOrEmpty(credentials))
        {
            request.UseDefaultCredentials = true;
            request.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
        }

        if (!string.IsNullOrEmpty(cookieValue))
        {
            request.Headers.Add(HttpRequestHeader.Cookie, cookieValue);
        }

        if (!string.IsNullOrEmpty(headerName) && !string.IsNullOrEmpty(headerValue))
        {
            request.Headers.Add(headerName, headerValue);
        }

        if (!string.IsNullOrEmpty(method))
        {
            request.Method = method;
        }
        else
        {
            request.Method = "POST";
        }

        request.ContentType = contentType;

        //stream.Seek(0, SeekOrigin.Begin);
        //byte[] buffer = new byte[stream.Length];

        //int count = 0;
        //while (count < stream.Length)
        //{
        //    buffer[count++] = Convert.ToByte(stream.ReadByte());
        //}

        //request.ContentLength = buffer.Length;

        //using (Stream sendStream = request.GetRequestStream())
        //{
        //    sendStream.Write(buffer, 0, buffer.Length);
        //    sendStream.Close();
        //}

        //string result = "";
        //using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
        //{
        //    Stream dataStream = response.GetResponseStream();
        //    StreamReader reader = new StreamReader(dataStream, encoding);
        //    result = reader.ReadToEnd();

        //    reader.Close();
        //    dataStream.Close();
        //    response.Close();
        //}

        if (!string.IsNullOrEmpty(postParam))
        {
            if (!string.IsNullOrEmpty(contentType))
                request.ContentType = contentType;
            else
                request.ContentType = @"application/x-www-form-urlencoded";

            //
            string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
            string fileFormName = "file";
            string contenttype = "application/octet-stream";
            // Build up the post message header

            StringBuilder sb = new StringBuilder();
            sb.Append("--");
            sb.Append(boundary);
            sb.Append("\r\n");
            sb.Append("Content-Disposition: form-data; name=\"");
            sb.Append(fileFormName);
            sb.Append("\"; filename=\"");
            sb.Append(saveFile);
            sb.Append("\";");
            sb.Append(postParam);
            sb.Append("\r\n");
            sb.Append("Content-Type: ");
            sb.Append(contenttype);
            sb.Append("\r\n");
            sb.Append("\r\n");

            string postHeader = sb.ToString();
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);

            // Build the trailing boundary string as a byte array

            // ensuring the boundary appears on a line by itself

            byte[] boundaryBytes =
                   Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");

            long length = postHeaderBytes.Length + fileLength + boundaryBytes.Length;
            request.ContentLength = length;

            Stream requestStream = request.GetRequestStream();

            // Write out our post header
            requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);

            // Write out the file contents
            byte[] buffer = new Byte[checked((uint)Math.Min(4096,
                                     (int)fileLength))];
            int bytesRead = 0;
            while ((bytesRead = saveFileSteam.Read(buffer, 0, buffer.Length)) != 0)
                requestStream.Write(buffer, 0, bytesRead);

            // Write out the trailing boundary
            requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);

            requestStream.Close();
            requestStream = null;

            //byte[] buffer = encoding.GetBytes(postParam);
            //request.ContentLength = buffer.Length;

            //Stream sendStream = request.GetRequestStream();
            //sendStream.Write(buffer, 0, buffer.Length);
            //sendStream.Close();
        }

        string result = "";
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();

        Stream dataStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(dataStream, encoding);
        result = reader.ReadToEnd();

        reader.Close();
        dataStream.Close();
        response.Close();

        return result;
    }

테스트 2차

HttpClient 방식

파일업로드시 form-data.

앞뒤 content.Add 로 기본 내용(앞,뒤에 자동으로 붙는 부분)이 들어간다. 간략해짐.

public static string GetURIRequestImageUpload2(string uri, string postParam = null, int serviceId=0, string registrationNo=null, long memberSN = 0, string headerName = null, string headerValue = null, string method = null, string saveFile = null, System.IO.Stream saveFileSteam = null, int fileLength = 0)
{

    using (var client = new HttpClient())
    {
        client.DefaultRequestHeaders.Add(headerName, headerValue);
            //client.DefaultRequestHeaders.Add("Content-Type", "application/json");
            //using (var content = new MultipartFormDataContent())
            //{
            //    //Content-Disposition: form-data; name="json"
            //    //var stringContent = new StringContent("");
            //    //stringContent.Headers.Add("Content-Disposition", "form-data; name=\""+ postParam + "\"");
            //    content.Add(new StringContent(serviceId.ToString()), "serviceId");
            //    content.Add(new StringContent(registrationNo), "registrationNo");
            //    content.Add(new StringContent(memberSN.ToString()), "memberSN");

            //    var streamContent = new StreamContent(saveFileSteam);
            //    //streamContent.Headers.Add("Content-Type", "application/octet-stream");
            //    streamContent.Headers.Add("Content-Type", "application/octet-stream");
            //    streamContent.Headers.Add("Content-Disposition", "form-data; name=\"file\"; filename=\"c:\\" + saveFile + "\"");
            //    content.Add(streamContent, "file", "c:\\"+saveFile);

            //    var message = client.PutAsync(uri, content);

            //    var input = message.Result.Content.ReadAsStringAsync();
            //    Console.WriteLine(input.Result);
            //    Console.Read();

            //    return input.Result.ToString();
            //}

            using (var content = new MultipartFormDataContent())
            {
                content.Add(new StringContent(serviceId.ToString()), "serviceId");
                content.Add(new StringContent(registrationNo), "registrationNo");
                content.Add(new StringContent(memberSN.ToString()), "memberSN");

                var streamContent = new StreamContent(saveFileSteam);
                streamContent.Headers.Add("Content-Type", "image/jpeg");
                content.Add(streamContent, "file", "/C:/"+saveFile);

                var message = client.PutAsync(uri, content);

                var input = message.Result.Content.ReadAsStringAsync();

                return input.Result.ToString();
            }
        }
    }
    ```

2차 간략하게 처리 됨.

파일 업로드 관련 참조

https://stackoverrun.com/ko/q/3524546
http://blog.naver.com/PostView.nhn?blogId=eastee&logNo=20117770155&redirect=Dlog&widgetTypeCall=true
https://stackoverflow.com/questions/1131425/send-a-file-via-http-post-with-c-sharp
https://stackoverflow.com/questions/15195586/httppost-and-webapi

https://www.it-swarm.dev/ko/c%23/httpclient%EC%97%90-%EB%8C%80%ED%95%9C-contenttype-%ED%97%A4%EB%8D%94%EB%A5%BC-%EC%84%A4%EC%A0%95-%ED%95%98%EC%8B%9C%EA%B2%A0%EC%8A%B5%EB%8B%88%EA%B9%8C/1066841790/
https://stackoverflow.com/questions/48164503/httpclient-multipart-form-data-post-image-and-json-same-time
https://www.it-swarm.dev/ko/c%23/c-httpclient-45-%EB%A9%80%ED%8B%B0-%ED%8C%8C%ED%8A%B8-%EC%96%91%EC%8B%9D-%EB%8D%B0%EC%9D%B4%ED%84%B0-%EC%97%85%EB%A1%9C%EB%93%9C/1073693525/