【Unity】LineのNotifyにunityから画像をHTTP POST送信する方法

【Unity】から Line notifyに画像をHTTP POST送信する関数です。需要はあまりないとは思いますが、こないだ使おうとして苦労したので載せておきます。

multipartTest(“ご自身のラインNotify用のトークン”);

を実行すれば、画像を送信できます。

linURL = “https://notify-api.line.me/api/notify” です。

public class FormFile {
public string Name { get; set; }
public string ContentType { get; set; }
public string FilePath { get; set; }
public byte[] bytes { get; set; }
}
//ラインメッセージは1時間あたり１０００回
//1時間あたり５０枚の画像送信制限
private void multipartTest(string access_token) {
Dictionary<string, object> d = new Dictionary<string, object>()
{
// message , imageFile … name is provided by LINE API
{ “message”, @”From 3tap ” + fileName },
{ “imageFile”, new FormFile(){ Name = ”ファイル名”, ContentType = “image/jpeg”, FilePath = ”ファイルのパス” }
}
};
string boundary = “Boundary”;
List<byte[]> output = genMultPart(d, boundary);
lineNotifyMultipart(access_token, boundary, output);
}
private void lineNotifyMultipart(string access_token, string boundary, List<byte[]> output) {
try {
#region POST multipart/form-data
StringBuilder sb = new StringBuilder();
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(lineUrl);
request.Method = “POST”;
request.ContentType = “multipart/form-data; boundary=Boundary”;
request.Timeout = 30000;
// header
sb.Clear();
sb.Append(“Bearer “);
sb.Append(access_token);
request.Headers.Add(“Authorization”, sb.ToString());
// note: multipart/form-data boundary must exist in headers ContentType
sb.Clear();
sb.Append(“multipart/form-data; boundary=”);
sb.Append(boundary);
request.ContentType = sb.ToString();
// write Post Body Message
BinaryWriter bw = new BinaryWriter(request.GetRequestStream());
foreach (byte[] bytes in output)
bw.Write(bytes);
#endregion
getResponse(request);
} catch (Exception ex) {
Debug.Log(ex.ToString());
#region Exception
StringBuilder sbEx = new StringBuilder();
sbEx.Append(ex.GetType());
sbEx.AppendLine();
sbEx.AppendLine(ex.Message);
sbEx.AppendLine(ex.StackTrace);
if (ex.InnerException != null)
sbEx.AppendLine(ex.InnerException.Message);
//myException ex2 = new myException(sbEx.ToString());
//message(ex2.Message);
#endregion
}
}
private void getResponse(HttpWebRequest request) {
StringBuilder sb = new StringBuilder();
StringBuilder limit = new StringBuilder();
string result = string.Empty;
StreamReader sr = null;
try {
#region Get Response
if (request == null)
return;
// HttpWebRequest GetResponse() if error happened will trigger WebException
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse) {
sb.AppendLine();
foreach (var x in response.Headers) {
sb.Append(x);
sb.Append(” : “);
sb.Append(response.Headers[x.ToString()]);
if (x.ToString() == “X-RateLimit-Reset”) {
sb.Append(” ( “);
//sb.Append(CheckFormat.ToEpcohDateTimeUTC(long.Parse(response.Headers[x.ToString()])));
sb.Append(long.Parse(response.Headers[x.ToString()]));
sb.Append(” )”);
}
sb.AppendLine();
//////////////////////////////////////////////////////////////////////////////////////
//追加　制限の残り回数と解除する時間を取得
if (x.ToString() == “X-RateLimit-Remaining”) {
limit.Append(“message limit:”);
limit.Append(response.Headers[x.ToString()]);
limit.AppendLine();
}
if (x.ToString() == “X-RateLimit-ImageRemaining”) {
limit.Append(“image limit:”);
limit.Append(response.Headers[x.ToString()] + “”);
limit.AppendLine();
}
if (x.ToString() == “X-RateLimit-Reset”) {
DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
DateTime time = UnixEpoch.AddSeconds(long.Parse(response.Headers[x.ToString()]));
limit.Append(“Reset:” + time);
limit.AppendLine();
}
//////////////////////////////////////////////////////////////////////////////////////
}
using (sr = new StreamReader(response.GetResponseStream())) {
result = sr.ReadToEnd();
sb.Append(result);
}
}
//////////////////////////////////////////////////////////////////////////////////////
//追加
limit.AppendLine();
limit.Append(“Saved in gallery”);
StartCoroutine(Pop(limit.ToString(), text1));//取得した文字列を表示
//////////////////////////////////////////////////////////////////////////////////////
Debug.Log(sb.ToString());
//message(sb.ToString());
#endregion
} catch (WebException ex) {
#region WebException handle
// WebException Response
using (HttpWebResponse response = (HttpWebResponse)ex.Response) {
sb.AppendLine(“Error”);
foreach (var x in response.Headers) {
sb.Append(x);
sb.Append(” : “);
sb.Append(response.Headers[x.ToString()]);
sb.AppendLine();
}
using (sr = new StreamReader(response.GetResponseStream())) {
result = sr.ReadToEnd();
sb.Append(result);
}
//message(sb.ToString());
}
#endregion
}
}
public List<byte[]> genMultPart(Dictionary<string, object> parameters, string boundary) {
StringBuilder sb = new StringBuilder();
sb.Clear();
sb.Append(“\r\n–“);
sb.Append(boundary);
sb.Append(“\r\n”);
string beginBoundary = sb.ToString();
sb.Clear();
sb.Append(“\r\n–“);
sb.Append(boundary);
sb.Append(“–\r\n”);
string endBoundary = sb.ToString();
sb.Clear();
sb.Append(“Content-Type: multipart/form-data; boundary=”);
sb.Append(boundary);
sb.Append(“\r\n”);
List<byte[]> byteList = new List<byte[]>();
byteList.Add(System.Text.Encoding.UTF8.GetBytes(sb.ToString()));
foreach (KeyValuePair<string, object> pair in parameters) {
if (pair.Value is FormFile) {
byteList.Add(System.Text.Encoding.ASCII.GetBytes(beginBoundary));
FormFile form = pair.Value as FormFile;
sb.Clear();
sb.Append(“Content-Disposition: form-data; name=\””);
sb.Append(pair.Key);
sb.Append(“\”; filename=\””);
sb.Append(form.Name);
sb.Append(“\”\r\nContent-Type: “);
sb.Append(form.ContentType);
sb.Append(“\r\n\r\n”);
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(sb.ToString());
byteList.Add(bytes);
if (form.bytes == null && !string.IsNullOrEmpty(form.FilePath)) {
FileStream fs = new FileStream(form.FilePath, FileMode.Open, FileAccess.Read);
MemoryStream ms = new MemoryStream();
fs.CopyTo(ms);
byteList.Add(ms.ToArray());
} else
byteList.Add(form.bytes);
} else {
byteList.Add(System.Text.Encoding.ASCII.GetBytes(beginBoundary));
sb.Clear();
sb.Append(“Content-Disposition: form-data; name=\””);
sb.Append(pair.Key);
sb.Append(“\””);
sb.Append(“\r\n\r\n”);
sb.Append(pair.Value);
string data = sb.ToString();
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(data);
byteList.Add(bytes);
}
}
byteList.Add(System.Text.Encoding.ASCII.GetBytes(endBoundary));
return byteList;
}