Added support chunked response body (#24)

* Fix for CVE-2015-0219

* Update submodule libuv to 1.44.2 stable

* Replacing int to int64_t (content length)

* Fix "Connection" header on response

* Redesign wsgi_body_pleload function (detect filelike response body)

* Added support for sending responses containing large files

* Added support for sending chunked content (when length is unknown)

* Fix incorrect parsing HTTP field values

* Fix Expect: 100-continue for PycURL

* Detecting and blocking HTTP pipelining

* Added preallocated read buffer and new environ option

Author: remittor

fastwsgi/common.c

@@ -1,4 +1,5 @@
 #include "common.h"
+#include "llhttp.h"
 
 void logrepr(int level, PyObject* obj)
 {
@@ -10,6 +11,17 @@ void logrepr(int level, PyObject* obj)
     Py_XDECREF(str);
 }
 
+const char * get_http_status_name(int status)
+{
+#define HTTP_STATUS_GEN(NUM, NAME, STRING) case HTTP_STATUS_##NAME: return #STRING;
+    switch (status) {
+        HTTP_STATUS_MAP(HTTP_STATUS_GEN)
+    default: return NULL;
+    }
+#undef HTTP_STATUS_GEN
+    return NULL;
+}
+
 int64_t get_env_int(const char * name)
 {
     int64_t v;

fastwsgi/common.h

@@ -19,6 +19,9 @@
 # define INLINE inline
 #endif
 
+#define _max(a,b) (((a) > (b)) ? (a) : (b))
+#define _min(a,b) (((a) < (b)) ? (a) : (b))
+
 typedef union {
     struct sockaddr_storage storage;
     struct sockaddr addr; 
@@ -46,4 +49,6 @@ void logrepr(int level, PyObject * obj);
 
 int64_t get_env_int(const char * name);
 
+const char * get_http_status_name(int status);
+
 #endif

fastwsgi/constants.c

@@ -33,10 +33,13 @@ void init_constants() {
 
     g_cv.module_io = PyImport_ImportModule("io");
     g_cv.BytesIO = PyUnicode_FromString("BytesIO");
+    g_cv.close = PyUnicode_FromString("close");
     g_cv.write = PyUnicode_FromString("write");
     g_cv.read = PyUnicode_FromString("read");
     g_cv.truncate = PyUnicode_FromString("truncate");
     g_cv.seek = PyUnicode_FromString("seek");
+    g_cv.tell = PyUnicode_FromString("tell");
+    g_cv.buffer_size = PyUnicode_FromString("buffer_size");
     g_cv.getvalue = PyUnicode_FromString("getvalue");
     g_cv.comma = PyUnicode_FromString(",");
 

fastwsgi/constants.h

@@ -34,10 +34,13 @@ typedef struct {
 
     PyObject* module_io;
     PyObject* BytesIO;
+    PyObject* close;
     PyObject* write;
     PyObject* read;
     PyObject* truncate;
     PyObject* seek;
+    PyObject* tell;
+    PyObject* buffer_size;
     PyObject* getvalue;
     PyObject* comma;