diff --git a/TC1/http_server/web_log.c b/TC1/http_server/web_log.c
new file mode 100644
index 0000000..9c41e2c
--- /dev/null
+++ b/TC1/http_server/web_log.c
@@ -0,0 +1,34 @@
+#include"web_log.h"
+
+LogRecord log_record = { 1,{ 0 } };
+char log_record_str[LOG_NUM*LOG_LEN] = { 0 };
+
+void SetLogRecord(LogRecord* lr, char* log)
+{
+    if (strlen(log) > LOG_LEN)
+    {
+        log[LOG_LEN-1] = 0;
+    }
+    char** log = &lr->logs[(++lr->idx)% LOG_NUM];
+    if (*log)
+    {
+        free(*log);
+    }
+    *log = lr;
+}
+
+char* GetLogRecord(int idx)
+{
+    if (idx > log_record.idx) return "";
+
+    int i = idx > 0 ? idx : (log_record.idx - LOG_NUM + 1);
+    i = i < 0 ? 0 : i;
+    char* tmp = log_record_str;
+    for (; i <= log_record.idx; i++)
+    {
+        sprintf(tmp, "%s\n", log_record.logs[i%LOG_NUM]);
+        tmp += strlen(tmp);
+    }
+    return log_record_str;
+}
+
diff --git a/TC1/http_server/web_log.h b/TC1/http_server/web_log.h
new file mode 100644
index 0000000..385a8bb
--- /dev/null
+++ b/TC1/http_server/web_log.h
@@ -0,0 +1,18 @@
+
+#define LOG_NUM 100
+#define LOG_LEN 128
+typedef struct
+{
+    int idx;
+    char* logs[LOG_NUM];
+} LogRecord;
+
+void SetLogRecord(LogRecord* lr, char* log);
+char* GetLogRecord(int idx);
+
+#define os_log(format, ...)                        \
+    char* log = malloc(sizeof(char)*LOG_LEN);      \
+    snprintf(log, LOG_LEN, format, ##__VA_ARGS__); \
+    SetLogRecord(log_record, log);                 \
+    custom_log("WIFI", format, ##__VA_ARGS__)      \
+