… | |
… | |
132 | The peer's numeric host and port (the socket peername) are passed as |
132 | The peer's numeric host and port (the socket peername) are passed as |
133 | parameters, together with a retry callback. At the time it is called the |
133 | parameters, together with a retry callback. At the time it is called the |
134 | read and write queues, EOF status, TLS status and similar properties of |
134 | read and write queues, EOF status, TLS status and similar properties of |
135 | the handle will have been reset. |
135 | the handle will have been reset. |
136 | |
136 | |
137 | It is not allowed to use the read or write queues while the handle object |
|
|
138 | is connecting. |
|
|
139 | |
|
|
140 | If, for some reason, the handle is not acceptable, calling C<$retry> will |
137 | If, for some reason, the handle is not acceptable, calling C<$retry> will |
141 | continue with the next connection target (in case of multi-homed hosts or |
138 | continue with the next connection target (in case of multi-homed hosts or |
142 | SRV records there can be multiple connection endpoints). The C<$retry> |
139 | SRV records there can be multiple connection endpoints). The C<$retry> |
143 | callback can be invoked after the connect callback returns, i.e. one can |
140 | callback can be invoked after the connect callback returns, i.e. one can |
144 | start a handshake and then decide to retry with the next host if the |
141 | start a handshake and then decide to retry with the next host if the |
… | |
… | |
496 | callback. |
493 | callback. |
497 | |
494 | |
498 | This callback will only be called on TLS shutdowns, not when the |
495 | This callback will only be called on TLS shutdowns, not when the |
499 | underlying handle signals EOF. |
496 | underlying handle signals EOF. |
500 | |
497 | |
501 | =item json => JSON or JSON::XS object |
498 | =item json => L<JSON>, L<JSON::PP> or L<JSON::XS> object |
502 | |
499 | |
503 | This is the json coder object used by the C<json> read and write types. |
500 | This is the json coder object used by the C<json> read and write types. |
504 | |
501 | |
505 | If you don't supply it, then AnyEvent::Handle will create and use a |
502 | If you don't supply it, then AnyEvent::Handle will create and use a |
506 | suitable one (on demand), which will write and expect UTF-8 encoded JSON |
503 | suitable one (on demand), which will write and expect UTF-8 encoded |
|
|
504 | JSON texts (either using L<JSON::XS> or L<JSON>). The written texts are |
|
|
505 | guaranteed not to contain any newline character. |
|
|
506 | |
|
|
507 | For security reasons, this encoder will likely I<not> handle numbers and |
|
|
508 | strings, only arrays and objects/hashes. The reason is that originally |
|
|
509 | JSON was self-delimited, but Dougles Crockford thought it was a splendid |
|
|
510 | idea to redefine JSON incompatibly, so this is no longer true. |
|
|
511 | |
|
|
512 | For protocols that used back-to-back JSON texts, this might lead to |
|
|
513 | run-ins, where two or more JSON texts will be interpreted as one JSON |
507 | texts. |
514 | text. |
508 | |
515 | |
|
|
516 | For this reason, if the default encoder uses L<JSON::XS>, it will default |
|
|
517 | to not allowing anything but arrays and objects/hashes, at least for the |
|
|
518 | forseeable future (it will change at some point). This might or might not |
|
|
519 | be true for the L<JSON> module, so this might cause a security issue. |
|
|
520 | |
|
|
521 | If you depend on either behaviour, you should create your own json object |
|
|
522 | and pass it in explicitly. |
|
|
523 | |
|
|
524 | =item cbor => L<CBOR::XS> object |
|
|
525 | |
|
|
526 | This is the cbor coder object used by the C<cbor> read and write types. |
|
|
527 | |
|
|
528 | If you don't supply it, then AnyEvent::Handle will create and use a |
|
|
529 | suitable one (on demand), which will write CBOR without using extensions, |
|
|
530 | if possible. |
|
|
531 | |
509 | Note that you are responsible to depend on the JSON module if you want to |
532 | Note that you are responsible to depend on the L<CBOR::XS> module if you |
510 | use this functionality, as AnyEvent does not have a dependency itself. |
533 | want to use this functionality, as AnyEvent does not have a dependency on |
|
|
534 | it itself. |
511 | |
535 | |
512 | =back |
536 | =back |
513 | |
537 | |
514 | =cut |
538 | =cut |
515 | |
539 | |
… | |
… | |
1045 | |
1069 | |
1046 | Encodes the given hash or array reference into a JSON object. Unless you |
1070 | Encodes the given hash or array reference into a JSON object. Unless you |
1047 | provide your own JSON object, this means it will be encoded to JSON text |
1071 | provide your own JSON object, this means it will be encoded to JSON text |
1048 | in UTF-8. |
1072 | in UTF-8. |
1049 | |
1073 | |
|
|
1074 | The default encoder might or might not handle every type of JSON value - |
|
|
1075 | it might be limited to arrays and objects for security reasons. See the |
|
|
1076 | C<json> constructor attribute for more details. |
|
|
1077 | |
1050 | JSON objects (and arrays) are self-delimiting, so you can write JSON at |
1078 | JSON objects (and arrays) are self-delimiting, so if you only use arrays |
1051 | one end of a handle and read them at the other end without using any |
1079 | and hashes, you can write JSON at one end of a handle and read them at the |
1052 | additional framing. |
1080 | other end without using any additional framing. |
1053 | |
1081 | |
1054 | The generated JSON text is guaranteed not to contain any newlines: While |
1082 | The JSON text generated by the default encoder is guaranteed not to |
1055 | this module doesn't need delimiters after or between JSON texts to be |
1083 | contain any newlines: While this module doesn't need delimiters after or |
1056 | able to read them, many other languages depend on that. |
1084 | between JSON texts to be able to read them, many other languages depend on |
|
|
1085 | them. |
1057 | |
1086 | |
1058 | A simple RPC protocol that interoperates easily with others is to send |
1087 | A simple RPC protocol that interoperates easily with other languages is |
1059 | JSON arrays (or objects, although arrays are usually the better choice as |
1088 | to send JSON arrays (or objects, although arrays are usually the better |
1060 | they mimic how function argument passing works) and a newline after each |
1089 | choice as they mimic how function argument passing works) and a newline |
1061 | JSON text: |
1090 | after each JSON text: |
1062 | |
1091 | |
1063 | $handle->push_write (json => ["method", "arg1", "arg2"]); # whatever |
1092 | $handle->push_write (json => ["method", "arg1", "arg2"]); # whatever |
1064 | $handle->push_write ("\012"); |
1093 | $handle->push_write ("\012"); |
1065 | |
1094 | |
1066 | An AnyEvent::Handle receiver would simply use the C<json> read type and |
1095 | An AnyEvent::Handle receiver would simply use the C<json> read type and |
… | |
… | |
1069 | $handle->push_read (json => sub { my $array = $_[1]; ... }); |
1098 | $handle->push_read (json => sub { my $array = $_[1]; ... }); |
1070 | |
1099 | |
1071 | Other languages could read single lines terminated by a newline and pass |
1100 | Other languages could read single lines terminated by a newline and pass |
1072 | this line into their JSON decoder of choice. |
1101 | this line into their JSON decoder of choice. |
1073 | |
1102 | |
|
|
1103 | =item cbor => $perl_scalar |
|
|
1104 | |
|
|
1105 | Encodes the given scalar into a CBOR value. Unless you provide your own |
|
|
1106 | L<CBOR::XS> object, this means it will be encoded to a CBOR string not |
|
|
1107 | using any extensions, if possible. |
|
|
1108 | |
|
|
1109 | CBOR values are self-delimiting, so you can write CBOR at one end of |
|
|
1110 | a handle and read them at the other end without using any additional |
|
|
1111 | framing. |
|
|
1112 | |
|
|
1113 | A simple nd very very fast RPC protocol that interoperates with |
|
|
1114 | other languages is to send CBOR and receive CBOR values (arrays are |
|
|
1115 | recommended): |
|
|
1116 | |
|
|
1117 | $handle->push_write (cbor => ["method", "arg1", "arg2"]); # whatever |
|
|
1118 | |
|
|
1119 | An AnyEvent::Handle receiver would simply use the C<cbor> read type: |
|
|
1120 | |
|
|
1121 | $handle->push_read (cbor => sub { my $array = $_[1]; ... }); |
|
|
1122 | |
1074 | =cut |
1123 | =cut |
1075 | |
1124 | |
1076 | sub json_coder() { |
1125 | sub json_coder() { |
1077 | eval { require JSON::XS; JSON::XS->new->utf8 } |
1126 | eval { require JSON::XS; JSON::XS->new->utf8 } |
1078 | || do { require JSON; JSON->new->utf8 } |
1127 | || do { require JSON::PP; JSON::PP->new->utf8 } |
1079 | } |
1128 | } |
1080 | |
1129 | |
1081 | register_write_type json => sub { |
1130 | register_write_type json => sub { |
1082 | my ($self, $ref) = @_; |
1131 | my ($self, $ref) = @_; |
1083 | |
1132 | |
1084 | my $json = $self->{json} ||= json_coder; |
1133 | ($self->{json} ||= json_coder) |
1085 | |
|
|
1086 | $json->encode ($ref) |
1134 | ->encode ($ref) |
|
|
1135 | }; |
|
|
1136 | |
|
|
1137 | sub cbor_coder() { |
|
|
1138 | require CBOR::XS; |
|
|
1139 | CBOR::XS->new |
|
|
1140 | } |
|
|
1141 | |
|
|
1142 | register_write_type cbor => sub { |
|
|
1143 | my ($self, $scalar) = @_; |
|
|
1144 | |
|
|
1145 | ($self->{cbor} ||= cbor_coder) |
|
|
1146 | ->encode ($scalar) |
1087 | }; |
1147 | }; |
1088 | |
1148 | |
1089 | =item storable => $reference |
1149 | =item storable => $reference |
1090 | |
1150 | |
1091 | Freezes the given reference using L<Storable> and writes it to the |
1151 | Freezes the given reference using L<Storable> and writes it to the |
… | |
… | |
1485 | |
1545 | |
1486 | register_read_type line => sub { |
1546 | register_read_type line => sub { |
1487 | my ($self, $cb, $eol) = @_; |
1547 | my ($self, $cb, $eol) = @_; |
1488 | |
1548 | |
1489 | if (@_ < 3) { |
1549 | if (@_ < 3) { |
1490 | # this is more than twice as fast as the generic code below |
1550 | # this is faster then the generic code below |
1491 | sub { |
1551 | sub { |
1492 | $_[0]{rbuf} =~ s/^([^\015\012]*)(\015?\012)// or return; |
1552 | (my $pos = index $_[0]{rbuf}, "\012") >= 0 |
|
|
1553 | or return; |
1493 | |
1554 | |
|
|
1555 | (my $str = substr $_[0]{rbuf}, 0, $pos + 1, "") =~ s/(\015?\012)\Z// or die; |
1494 | $cb->($_[0], "$1", "$2"); |
1556 | $cb->($_[0], $str, "$1"); |
1495 | 1 |
1557 | 1 |
1496 | } |
1558 | } |
1497 | } else { |
1559 | } else { |
1498 | $eol = quotemeta $eol unless ref $eol; |
1560 | $eol = quotemeta $eol unless ref $eol; |
1499 | $eol = qr|^(.*?)($eol)|s; |
1561 | $eol = qr|^(.*?)($eol)|s; |
… | |
… | |
1662 | =item json => $cb->($handle, $hash_or_arrayref) |
1724 | =item json => $cb->($handle, $hash_or_arrayref) |
1663 | |
1725 | |
1664 | Reads a JSON object or array, decodes it and passes it to the |
1726 | Reads a JSON object or array, decodes it and passes it to the |
1665 | callback. When a parse error occurs, an C<EBADMSG> error will be raised. |
1727 | callback. When a parse error occurs, an C<EBADMSG> error will be raised. |
1666 | |
1728 | |
1667 | If a C<json> object was passed to the constructor, then that will be used |
1729 | If a C<json> object was passed to the constructor, then that will be |
1668 | for the final decode, otherwise it will create a JSON coder expecting UTF-8. |
1730 | used for the final decode, otherwise it will create a L<JSON::XS> or |
|
|
1731 | L<JSON::PP> coder object expecting UTF-8. |
1669 | |
1732 | |
1670 | This read type uses the incremental parser available with JSON version |
1733 | This read type uses the incremental parser available with JSON version |
1671 | 2.09 (and JSON::XS version 2.2) and above. You have to provide a |
1734 | 2.09 (and JSON::XS version 2.2) and above. |
1672 | dependency on your own: this module will load the JSON module, but |
|
|
1673 | AnyEvent does not depend on it itself. |
|
|
1674 | |
1735 | |
1675 | Since JSON texts are fully self-delimiting, the C<json> read and write |
1736 | Since JSON texts are fully self-delimiting, the C<json> read and write |
1676 | types are an ideal simple RPC protocol: just exchange JSON datagrams. See |
1737 | types are an ideal simple RPC protocol: just exchange JSON datagrams. See |
1677 | the C<json> write type description, above, for an actual example. |
1738 | the C<json> write type description, above, for an actual example. |
1678 | |
1739 | |
… | |
… | |
1682 | my ($self, $cb) = @_; |
1743 | my ($self, $cb) = @_; |
1683 | |
1744 | |
1684 | my $json = $self->{json} ||= json_coder; |
1745 | my $json = $self->{json} ||= json_coder; |
1685 | |
1746 | |
1686 | my $data; |
1747 | my $data; |
1687 | my $rbuf = \$self->{rbuf}; |
|
|
1688 | |
1748 | |
1689 | sub { |
1749 | sub { |
1690 | my $ref = eval { $json->incr_parse ($_[0]{rbuf}) }; |
1750 | my $ref = eval { $json->incr_parse ($_[0]{rbuf}) }; |
1691 | |
1751 | |
1692 | if ($ref) { |
1752 | if ($ref) { |
… | |
… | |
1706 | |
1766 | |
1707 | () |
1767 | () |
1708 | } else { |
1768 | } else { |
1709 | $_[0]{rbuf} = ""; |
1769 | $_[0]{rbuf} = ""; |
1710 | |
1770 | |
|
|
1771 | () |
|
|
1772 | } |
|
|
1773 | } |
|
|
1774 | }; |
|
|
1775 | |
|
|
1776 | =item cbor => $cb->($handle, $scalar) |
|
|
1777 | |
|
|
1778 | Reads a CBOR value, decodes it and passes it to the callback. When a parse |
|
|
1779 | error occurs, an C<EBADMSG> error will be raised. |
|
|
1780 | |
|
|
1781 | If a L<CBOR::XS> object was passed to the constructor, then that will be |
|
|
1782 | used for the final decode, otherwise it will create a CBOR coder without |
|
|
1783 | enabling any options. |
|
|
1784 | |
|
|
1785 | You have to provide a dependency to L<CBOR::XS> on your own: this module |
|
|
1786 | will load the L<CBOR::XS> module, but AnyEvent does not depend on it |
|
|
1787 | itself. |
|
|
1788 | |
|
|
1789 | Since CBOR values are fully self-delimiting, the C<cbor> read and write |
|
|
1790 | types are an ideal simple RPC protocol: just exchange CBOR datagrams. See |
|
|
1791 | the C<cbor> write type description, above, for an actual example. |
|
|
1792 | |
|
|
1793 | =cut |
|
|
1794 | |
|
|
1795 | register_read_type cbor => sub { |
|
|
1796 | my ($self, $cb) = @_; |
|
|
1797 | |
|
|
1798 | my $cbor = $self->{cbor} ||= cbor_coder; |
|
|
1799 | |
|
|
1800 | my $data; |
|
|
1801 | |
|
|
1802 | sub { |
|
|
1803 | my (@value) = eval { $cbor->incr_parse ($_[0]{rbuf}) }; |
|
|
1804 | |
|
|
1805 | if (@value) { |
|
|
1806 | $cb->($_[0], @value); |
|
|
1807 | |
|
|
1808 | 1 |
|
|
1809 | } elsif ($@) { |
|
|
1810 | # error case |
|
|
1811 | $cbor->incr_reset; |
|
|
1812 | |
|
|
1813 | $_[0]->_error (Errno::EBADMSG); |
|
|
1814 | |
|
|
1815 | () |
|
|
1816 | } else { |
1711 | () |
1817 | () |
1712 | } |
1818 | } |
1713 | } |
1819 | } |
1714 | }; |
1820 | }; |
1715 | |
1821 | |
… | |
… | |
1972 | sub _dotls { |
2078 | sub _dotls { |
1973 | my ($self) = @_; |
2079 | my ($self) = @_; |
1974 | |
2080 | |
1975 | my $tmp; |
2081 | my $tmp; |
1976 | |
2082 | |
1977 | if (length $self->{_tls_wbuf}) { |
2083 | while (length $self->{_tls_wbuf}) { |
1978 | while (($tmp = Net::SSLeay::write ($self->{tls}, $self->{_tls_wbuf})) > 0) { |
2084 | if (($tmp = Net::SSLeay::write ($self->{tls}, $self->{_tls_wbuf})) <= 0) { |
1979 | substr $self->{_tls_wbuf}, 0, $tmp, ""; |
2085 | $tmp = Net::SSLeay::get_error ($self->{tls}, $tmp); |
|
|
2086 | |
|
|
2087 | return $self->_tls_error ($tmp) |
|
|
2088 | if $tmp != $ERROR_WANT_READ |
|
|
2089 | && ($tmp != $ERROR_SYSCALL || $!); |
|
|
2090 | |
|
|
2091 | last; |
1980 | } |
2092 | } |
1981 | |
2093 | |
1982 | $tmp = Net::SSLeay::get_error ($self->{tls}, $tmp); |
2094 | substr $self->{_tls_wbuf}, 0, $tmp, ""; |
1983 | return $self->_tls_error ($tmp) |
|
|
1984 | if $tmp != $ERROR_WANT_READ |
|
|
1985 | && ($tmp != $ERROR_SYSCALL || $!); |
|
|
1986 | } |
2095 | } |
1987 | |
2096 | |
1988 | while (defined ($tmp = Net::SSLeay::read ($self->{tls}))) { |
2097 | while (defined ($tmp = Net::SSLeay::read ($self->{tls}))) { |
1989 | unless (length $tmp) { |
2098 | unless (length $tmp) { |
1990 | $self->{_on_starttls} |
2099 | $self->{_on_starttls} |
… | |
… | |
2004 | $self->{_tls_rbuf} .= $tmp; |
2113 | $self->{_tls_rbuf} .= $tmp; |
2005 | $self->_drain_rbuf; |
2114 | $self->_drain_rbuf; |
2006 | $self->{tls} or return; # tls session might have gone away in callback |
2115 | $self->{tls} or return; # tls session might have gone away in callback |
2007 | } |
2116 | } |
2008 | |
2117 | |
2009 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); |
2118 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); # -1 is not neccessarily correct, but Net::SSLeay doesn't tell us |
2010 | return $self->_tls_error ($tmp) |
2119 | return $self->_tls_error ($tmp) |
2011 | if $tmp != $ERROR_WANT_READ |
2120 | if $tmp != $ERROR_WANT_READ |
2012 | && ($tmp != $ERROR_SYSCALL || $!); |
2121 | && ($tmp != $ERROR_SYSCALL || $!); |
2013 | |
2122 | |
2014 | while (length ($tmp = Net::SSLeay::BIO_read ($self->{_wbio}))) { |
2123 | while (length ($tmp = Net::SSLeay::BIO_read ($self->{_wbio}))) { |