문제 상황

http request 요청을 보낸 후 status가 pending 상태임

비작동 코드

public class ParsingUtil {
    public Request parseRequest(InputStream inputStream) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        try {
            String requestLine = reader.readLine();
            String[] requestParts = requestLine.split(" ");
            String method = requestParts[0];
            String path = requestParts[1];
            String contentType = "";
            int contentLength = 0;

            String line;
            while ((line = reader.readLine()) != null && !line.isEmpty()) {
                if (line.startsWith("Content-Type: ")) {
                    contentType = line.substring("Content-Type: ".length());
                } else if (line.startsWith("Content-Length: ")) {
                    contentLength = Integer.parseInt(line.substring("Content-Length: ".length()));
                }
            }

            RequestHeader requestHeader = new RequestHeader(method, path, contentType, contentLength);

            StringBuilder bodyBuilder = new StringBuilder();
            while ((line = reader.readLine()) != null) {
                bodyBuilder.append(line).append("\r\n");
            }

            RequestBody requestBody = new RequestBody(bodyBuilder.toString());

            return new Request(requestHeader, requestBody);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

문제 지점

while ((line = reader.readLine()) != null) {
	bodyBuilder.append(line).append("\r\n");
}

readLine(): 더 이상 읽어드릴 값이 없다면 null 반환(Stream의 끝에 도달한 경우)
ex) 빈줄, 공백을 읽어드릴 경우 ""를 반환한다. null을 반환하지 않는다.

수정 코드

public class ParsingUtil {
    public Request parseRequest(InputStream inputStream) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        try {
            String requestLine = reader.readLine();
            String[] requestParts = requestLine.split(" ");
            String method = requestParts[0];
            String path = requestParts[1];
            String contentType = "";
            int contentLength = 0;

            String line;
            while ((line = reader.readLine()) != null && !line.isEmpty()) {
                if (line.startsWith("Content-Type: ")) {
                    contentType = line.substring("Content-Type: ".length());
                } else if (line.startsWith("Content-Length: ")) {
                    contentLength = Integer.parseInt(line.substring("Content-Length: ".length()));
                }
            }

            RequestHeader requestHeader = new RequestHeader(method, path, contentType, contentLength);

            StringBuilder bodyBuilder = new StringBuilder();
            if(contentLength> 0) {
                while ((line = reader.readLine()) != null && !line.isEmpty()) {
                    bodyBuilder.append(line).append("\r\n");
                }
            }

            RequestBody requestBody = new RequestBody(bodyBuilder.toString());

            return new Request(requestHeader, requestBody);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}