author Matheus Kerschbaum <>
Sat, 02 Apr 2011 19:14:00 -0700
changeset 67579 70cedf3a3327ce6cbb671a061dad6d94b2723b4e
parent 64462 47340263d0712dbac9e37e1a02b2ff1cf2a38112
child 70073 17b04197ed58fc0ff4c4db67491ad8c97a06d971
permissions -rw-r--r--
Bug 639754 - Remove MOZ_IPC checks since IPC is always built now; r=bsmedberg

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4 et cin: */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is Mozilla.
 * The Initial Developer of the Original Code is
 * Netscape Communications.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Darin Fisher <> (original author)
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */

#ifndef nsHttp_h__
#define nsHttp_h__

#if defined(MOZ_LOGGING)
#define FORCE_PR_LOG

// e10s mess: IPDL-generatd headers include chromium which both #includes
// prlog.h, and #defines LOG in conflict with this file.
// Solution: (as described in bug 545995)
// 1) ensure that this file is #included before any IPDL-generated files and
//    anything else that #includes prlog.h, so that we can make sure prlog.h
//    sees FORCE_PR_LOG if needed.
// 2) #include IPDL boilerplate, and then undef LOG so our LOG wins.
// 3) nsNetModule.cpp does its own crazy stuff with #including prlog.h
//    multiple times; allow it to define ALLOW_LATE_NSHTTP_H_INCLUDE to bypass
//    check. 
#if defined(PR_LOG) && !defined(ALLOW_LATE_NSHTTP_H_INCLUDE)
#error "If nsHttp.h #included it must come before any IPDL-generated files or other files that #include prlog.h"
#include "mozilla/net/NeckoChild.h"
#undef LOG

#include "plstr.h"
#include "prlog.h"
#include "prtime.h"
#include "nsISupportsUtils.h"
#include "nsPromiseFlatString.h"
#include "nsURLHelper.h"
#include "netCore.h"

#if defined(PR_LOGGING)
// Log module for HTTP Protocol logging...
// To enable logging (see prlog.h for full details):
//    set NSPR_LOG_MODULES=nsHttp:5
//    set NSPR_LOG_FILE=http.log
// this enables PR_LOG_ALWAYS level information and places all output in
// the file http.log
extern PRLogModuleInfo *gHttpLog;

// http logging
#define LOG1(args) PR_LOG(gHttpLog, 1, args)
#define LOG2(args) PR_LOG(gHttpLog, 2, args)
#define LOG3(args) PR_LOG(gHttpLog, 3, args)
#define LOG4(args) PR_LOG(gHttpLog, 4, args)
#define LOG(args) LOG4(args)

#define LOG1_ENABLED() PR_LOG_TEST(gHttpLog, 1)
#define LOG2_ENABLED() PR_LOG_TEST(gHttpLog, 2)
#define LOG3_ENABLED() PR_LOG_TEST(gHttpLog, 3)
#define LOG4_ENABLED() PR_LOG_TEST(gHttpLog, 4)

// http version codes
#define NS_HTTP_VERSION_0_9      9
#define NS_HTTP_VERSION_1_0     10
#define NS_HTTP_VERSION_1_1     11

typedef PRUint8 nsHttpVersion;

// http connection capabilities

#define NS_HTTP_ALLOW_KEEPALIVE      (1<<0)
#define NS_HTTP_ALLOW_PIPELINING     (1<<1)

// a transaction with this caps flag will continue to own the connection,
// preventing it from being reclaimed, even after the transaction completes.

// a transaction with this caps flag will, upon opening a new connection,
// bypass the local DNS cache
#define NS_HTTP_REFRESH_DNS          (1<<3)

// a transaction with this caps flag will not pass SSL client-certificates
// to the server (see bug #466080), but is may also be used for other things
#define NS_HTTP_LOAD_ANONYMOUS       (1<<4)

// some default values

// hard upper limit on the number of requests that can be pipelined


#define NS_HTTP_HEADER_SEPS ", \t"

// http atoms...

struct nsHttpAtom
    operator const char *() const { return _val; }
    const char *get() const { return _val; }

    void operator=(const char *v) { _val = v; }
    void operator=(const nsHttpAtom &a) { _val = a._val; }

    // private
    const char *_val;

struct nsHttp
    static nsresult CreateAtomTable();
    static void DestroyAtomTable();

    // will dynamically add atoms to the table if they don't already exist
    static nsHttpAtom ResolveAtom(const char *);
    static nsHttpAtom ResolveAtom(const nsACString &s)
        return ResolveAtom(PromiseFlatCString(s).get());

    // returns true if the specified token [start,end) is valid per RFC 2616
    // section 2.2
    static PRBool IsValidToken(const char *start, const char *end);

    static inline PRBool IsValidToken(const nsCString &s) {
        const char *start = s.get();
        return IsValidToken(start, start + s.Length());

    // find the first instance (case-insensitive comparison) of the given
    // |token| in the |input| string.  the |token| is bounded by elements of
    // |separators| and may appear at the beginning or end of the |input|
    // string.  null is returned if the |token| is not found.  |input| may be
    // null, in which case null is returned.
    static const char *FindToken(const char *input, const char *token,
                                 const char *separators);

    // This function parses a string containing a decimal-valued, non-negative
    // 64-bit integer.  If the value would exceed LL_MAXINT, then PR_FALSE is
    // returned.  Otherwise, this function returns PR_TRUE and stores the
    // parsed value in |result|.  The next unparsed character in |input| is
    // optionally returned via |next| if |next| is non-null.
    // TODO(darin): Replace this with something generic.
    static PRBool ParseInt64(const char *input, const char **next,
                             PRInt64 *result);

    // Variant on ParseInt64 that expects the input string to contain nothing
    // more than the value being parsed.
    static inline PRBool ParseInt64(const char *input, PRInt64 *result) {
        const char *next;
        return ParseInt64(input, &next, result) && *next == '\0';

    // Declare all atoms
    // The atom names and values are stored in nsHttpAtomList.h and are brought
    // to you by the magic of C preprocessing.  Add new atoms to nsHttpAtomList
    // and all support logic will be auto-generated.
#define HTTP_ATOM(_name, _value) static nsHttpAtom _name;
#include "nsHttpAtomList.h"
#undef HTTP_ATOM

// utilities...

static inline PRUint32
PRTimeToSeconds(PRTime t_usec)
    return PRUint32( t_usec / PR_USEC_PER_SEC );

#define NowInSeconds() PRTimeToSeconds(PR_Now())

// ripped from glib.h
#undef  CLAMP
#define CLAMP(x, low, high)  (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))

// round q-value to one decimal place; return most significant digit as uint.
#define QVAL_TO_UINT(q) ((unsigned int) ((q + 0.05) * 10.0))

#define HTTP_LWS " \t"

#endif // nsHttp_h__