Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_wsarecv_chain.c @ 8717:e06283038ec8 quic
QUIC: clear SSL_OP_ENABLE_MIDDLEBOX_COMPAT on SSL context switch.
The SSL_OP_ENABLE_MIDDLEBOX_COMPAT option is provided by QuicTLS and enabled
by default in the newly created SSL contexts. SSL_set_quic_method() is used
to clear it, which is required for SSL handshake to work on QUIC connections.
Switching context in the ngx_http_ssl_servername() SNI callback overrides SSL
options from the new SSL context. This results in the option set again.
Fix is to explicitly clear it when switching to another SSL context.
Initially reported here (in Russian):
http://mailman.nginx.org/pipermail/nginx-ru/2021-November/063989.html
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Tue, 07 Dec 2021 15:49:51 +0300 |
parents | ecf2a9002b37 |
children | 56819a9491fe |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 |
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12 |
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13 #define NGX_WSABUFS 64 |
501 | 14 |
15 | |
16 ssize_t | |
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17 ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain, off_t limit) |
186
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18 { |
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19 int rc; |
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20 u_char *prev; |
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21 u_long bytes, flags; |
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22 size_t n, size; |
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23 ngx_err_t err; |
501 | 24 ngx_array_t vec; |
186
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25 ngx_event_t *rev; |
501 | 26 LPWSABUF wsabuf; |
27 WSABUF wsabufs[NGX_WSABUFS]; | |
186
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28 |
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29 prev = NULL; |
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30 wsabuf = NULL; |
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31 flags = 0; |
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32 size = 0; |
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33 bytes = 0; |
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34 |
501 | 35 vec.elts = wsabufs; |
36 vec.nelts = 0; | |
37 vec.size = sizeof(WSABUF); | |
577 | 38 vec.nalloc = NGX_WSABUFS; |
501 | 39 vec.pool = c->pool; |
186
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40 |
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41 /* coalesce the neighbouring bufs */ |
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42 |
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43 while (chain) { |
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44 n = chain->buf->end - chain->buf->last; |
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45 |
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46 if (limit) { |
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47 if (size >= (size_t) limit) { |
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48 break; |
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49 } |
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50 |
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51 if (size + n > (size_t) limit) { |
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52 n = (size_t) limit - size; |
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53 } |
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54 } |
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55 |
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56 if (prev == chain->buf->last) { |
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57 wsabuf->len += n; |
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58 |
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59 } else { |
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60 if (vec.nelts == vec.nalloc) { |
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61 break; |
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62 } |
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63 |
501 | 64 wsabuf = ngx_array_push(&vec); |
65 if (wsabuf == NULL) { | |
66 return NGX_ERROR; | |
67 } | |
68 | |
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69 wsabuf->buf = (char *) chain->buf->last; |
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70 wsabuf->len = n; |
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71 } |
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72 |
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73 size += n; |
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74 prev = chain->buf->end; |
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75 chain = chain->next; |
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76 } |
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77 |
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78 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
501 | 79 "WSARecv: %d:%d", vec.nelts, wsabuf->len); |
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80 |
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81 |
501 | 82 rc = WSARecv(c->fd, vec.elts, vec.nelts, &bytes, &flags, NULL, NULL); |
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83 |
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84 rev = c->read; |
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85 |
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86 if (rc == -1) { |
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87 rev->ready = 0; |
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88 err = ngx_socket_errno; |
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89 |
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90 if (err == WSAEWOULDBLOCK) { |
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91 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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92 "WSARecv() not ready"); |
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93 return NGX_AGAIN; |
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94 } |
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95 |
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96 rev->error = 1; |
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97 ngx_connection_error(c, err, "WSARecv() failed"); |
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98 return NGX_ERROR; |
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99 } |
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100 |
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101 #if (NGX_HAVE_FIONREAD) |
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102 |
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103 if (rev->available >= 0 && bytes > 0) { |
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104 rev->available -= bytes; |
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105 |
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106 /* |
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107 * negative rev->available means some additional bytes |
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108 * were received between kernel notification and WSARecv(), |
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109 * and therefore ev->ready can be safely reset even for |
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110 * edge-triggered event methods |
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111 */ |
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112 |
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113 if (rev->available < 0) { |
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114 rev->available = 0; |
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115 rev->ready = 0; |
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116 } |
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117 |
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118 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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119 "WSARecv: avail:%d", rev->available); |
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120 |
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121 } else if (bytes == size) { |
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122 |
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123 if (ngx_socket_nread(c->fd, &rev->available) == -1) { |
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124 rev->error = 1; |
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125 ngx_connection_error(c, ngx_socket_errno, |
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126 ngx_socket_nread_n " failed"); |
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127 return NGX_ERROR; |
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128 } |
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129 |
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130 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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131 "WSARecv: avail:%d", rev->available); |
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132 } |
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133 |
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134 #endif |
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135 |
186
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136 if (bytes < size) { |
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137 rev->ready = 0; |
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138 } |
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139 |
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140 if (bytes == 0) { |
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141 rev->eof = 1; |
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142 } |
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143 |
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144 return bytes; |
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145 } |