From 05c8e0a31a0d4192c590e833b24393208e1c751f Mon Sep 17 00:00:00 2001
From: tanaka takashi <isazaka@gmail.com>
Date: Tue, 30 Jun 2026 19:03:25 +0900
Subject: fix: MCPCをvendored fork化しMCP準拠と接続安定性を改善
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- Git submoduleを廃止してMCPCを直接管理
- Windowsで254リクエスト付近に発生する切断を修正
- JSON-RPC 2.0エラー応答を標準化
- tool schemaとruntimeの必須・任意引数を一致
- 1000回連続呼び出しの回帰テストを追加
---
 third_party/mcpc/tst/commtst.c | 181 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 third_party/mcpc/tst/commtst.c

(limited to 'third_party/mcpc/tst/commtst.c')

diff --git a/third_party/mcpc/tst/commtst.c b/third_party/mcpc/tst/commtst.c
new file mode 100644
index 0000000..a2ba8dc
--- /dev/null
+++ b/third_party/mcpc/tst/commtst.c
@@ -0,0 +1,181 @@
+#include "commtst.h"
+
+#include <stdint.h>
+
+i32_t
+fsize (FILE *strm)
+{
+  fseek (strm, 0, SEEK_SET);
+  fseek (strm, 0, SEEK_END);
+  long sz = ftell (strm);
+  assert (sz > 0);
+  fseek (strm, 0, SEEK_SET);
+  return sz;
+}
+
+void
+read_atmost (void *src, char *rbuf, const size_t nmost, size_t *nread)
+{
+#ifdef is_win
+  HANDLE *hdlp = (HANDLE *) src;
+#else
+  int *fdp = (int *) src;
+#endif
+  size_t nread_accm = 0;
+  size_t nleft = nmost;
+  while (nleft > 0)
+    {
+      ssize_t nbuffered = nmost - nleft;
+#ifdef is_win
+      ssize_t nread_cur = 0;
+      assT (ReadFile
+	    (*hdlp, rbuf + nbuffered, (DWORD)nleft, (LPDWORD) (&nread_cur),
+	     nullptr));
+#else
+      ssize_t nread_cur = read (*fdp, rbuf + nbuffered, nleft);
+#endif
+      if (nread_cur <= 0)
+	break;
+      nread_accm += nread_cur;
+      nleft -= nread_cur;
+    }
+  *nread = nread_accm;
+}
+
+void
+recv_atmost (
+#if is_unix
+	      int csock,
+#elif is_win
+	      SOCKET csock,
+#endif
+	      char *rbuf, const size_t nmost, size_t *nread)
+{
+  size_t nread_accm = 0;
+  size_t nleft = nmost;
+  while (nleft > 0)
+    {
+      ssize_t nbuffered = nmost - nleft;
+      ssize_t nread_cur = recv (csock, rbuf + nbuffered, (int)nleft, 0);
+      if (nread_cur <= 0)
+	break;
+      nread_accm += nread_cur;
+      nleft -= nread_cur;
+    }
+  *nread = nread_accm;
+}
+
+i32_t
+read_u8str (const char8_t *const filename, char8_t *const destbuf)
+{
+  FILE *file;
+
+#if is_win
+  fopen_s (&file, (const char*) filename, "rb,ccs=UTF-8");
+#else
+  file = fopen ((const char*) filename, "rb");
+#endif
+  assert (file != nullptr);
+
+  i32_t fsz = fsize (file);
+
+  size_t bytes_read = fread (destbuf, 1, fsz, file);
+  assert (bytes_read > 0);
+
+  // null-terminate the buffer
+  destbuf[bytes_read] = 0;
+  // printf("File content: %s\n", destbuf);
+
+  fclose (file);
+
+  return 0;
+}
+
+i32_t
+read_u8str_sz (const char8_t *const filename, char8_t *const destbuf,
+	       size_t *nread)
+{
+  FILE *file;
+
+#if is_win
+  fopen_s (&file, (const char*) filename, "rb,ccs=UTF-8");
+#else
+  file = fopen ((const char*) filename, "rb");
+#endif
+  assTcb (file != nullptr,
+	  {
+	  fprintf (stderr, "filename:%s\n", filename);
+	  });
+
+  i32_t fsz = fsize (file);
+
+  size_t bytes_read = fread (destbuf, 1, fsz, file);
+  assert (bytes_read > 0);
+
+  // null-terminate the buffer
+  destbuf[bytes_read] = 0;
+  *nread = bytes_read;
+  // printf("File content: %s\n", destbuf);
+
+  fclose (file);
+
+  return 0;
+}
+
+void
+zero_trailing_white_char (char8_t *buf, const size_t len)
+{
+  for (size_t i = len - 1; i != 0; i--) // TODO ckd_add
+    {
+      if (buf[i] == '\n' || buf[i] == '\r' || buf[i] == '\t' || buf[i] == ' ')
+	buf[i] = 0;
+      else
+	break;
+    }
+}
+
+void
+zero_trailing_white_char2 (char8_t *buf, size_t *len)
+{
+  for (size_t i = *len - 1; i != 0; i--) // TODO ckd_add
+    {
+      if (buf[i] == '\n' || buf[i] == '\r' || buf[i] == '\t' || buf[i] == ' ')
+	{
+	  buf[i] = 0;
+	  *len -= 1;
+	}
+      else
+	break;
+    }
+}
+
+#ifdef is_unix
+FILE *
+unix_fd2strm_r (int fd)
+{
+  return fdopen (fd, "r");
+}
+#endif
+
+#ifdef is_win
+FILE *
+win_handle2strm (HANDLE h)
+{
+  int fd = _open_osfhandle ((intptr_t) h, _O_RDONLY);
+  assT (fd > 0);
+
+  FILE *file = _fdopen (fd, "r+");
+  assT (file != nullptr);
+  return file;
+}
+#endif
+
+#ifdef is_win
+int
+win_handle2fd (HANDLE h)
+{
+  int fd = _open_osfhandle ((intptr_t) h, _O_RDONLY);
+  assT (fd > 0);
+  return fd;
+}
+#endif
-- 
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