source: benchmark/io/http/protocol.cfa @ c3ee5f3

arm-ehjacob/cs343-translationnew-ast-unique-expr
Last change on this file since c3ee5f3 was c3ee5f3, checked in by Thierry Delisle <tdelisle@…>, 9 months ago

Protocol now returns date in answer header

  • Property mode set to 100644
File size: 4.8 KB
Line 
1#include "protocol.hfa"
2
3#define _GNU_SOURCE
4extern "C" {
5        #include <fcntl.h>
6}
7#include <iofwd.hfa>
8
9#include <assert.h>
10// #include <stdio.h> // Don't use stdio.h, too slow to compile
11extern "C" {
12      int snprintf ( char * s, size_t n, const char * format, ... );
13        #include <linux/io_uring.h>
14}
15#include <string.h>
16#include <errno.h>
17
18#include "options.hfa"
19
20const char * volatile date = 0p;
21
22const char * http_msgs[] = {
23        "HTTP/1.1 200 OK\nServer: HttoForall\nDate: %s \nContent-Type: text/plain\nContent-Length: %zu \n\n",
24        "HTTP/1.1 400 Bad Request\nServer: HttoForall\nDate: %s \nContent-Type: text/plain\nContent-Length: 0 \n\n",
25        "HTTP/1.1 404 Not Found\nServer: HttoForall\nDate: %s \nContent-Type: text/plain\nContent-Length: 0 \n\n",
26        "HTTP/1.1 413 Payload Too Large\nServer: HttoForall\nDate: %s \nContent-Type: text/plain\nContent-Length: 0 \n\n",
27        "HTTP/1.1 414 URI Too Long\nServer: HttoForall\nDate: %s \nContent-Type: text/plain\nContent-Length: 0 \n\n",
28};
29
30_Static_assert( KNOWN_CODES == (sizeof(http_msgs ) / sizeof(http_msgs [0])));
31
32const int http_codes[] = {
33        200,
34        400,
35        404,
36        413,
37        414,
38};
39
40_Static_assert( KNOWN_CODES == (sizeof(http_codes) / sizeof(http_codes[0])));
41
42int code_val(HttpCode code) {
43        return http_codes[code];
44}
45
46static inline int answer( int fd, const char * it, int len) {
47        while(len > 0) {
48                // Call write
49                int ret = write(fd, it, len);
50                if( ret < 0 ) { if( errno != EAGAIN && errno != EWOULDBLOCK) abort( "'answer error' error: (%d) %s\n", (int)errno, strerror(errno) ); }
51
52                // update it/len
53                it  += ret;
54                len -= ret;
55        }
56        return 0;
57}
58
59int answer_error( int fd, HttpCode code ) {
60        /* paranoid */ assert( code < KNOWN_CODES && code != OK200 );
61        int idx = (int)code;
62        return answer( fd, http_msgs[idx], strlen( http_msgs[idx] ) );
63}
64
65int answer_header( int fd, size_t size ) {
66        const char * fmt = http_msgs[OK200];
67        int len = 200;
68        char buffer[len];
69        len = snprintf(buffer, len, fmt, date, size);
70        return answer( fd, buffer, len );
71}
72
73[HttpCode code, bool closed, * const char file, size_t len] http_read(int fd, []char buffer, size_t len) {
74        char * it = buffer;
75        size_t count = len - 1;
76        int rlen = 0;
77        READ:
78        for() {
79                int ret = cfa_read(fd, (void*)it, count, 0, -1`s, 0p, 0p);
80                // int ret = read(fd, (void*)it, count);
81                if(ret == 0 ) return [OK200, true, 0, 0];
82                if(ret < 0 ) {
83                        if( errno == EAGAIN || errno == EWOULDBLOCK) continue READ;
84                        // if( errno == EINVAL ) return [E400, true, 0, 0];
85                        abort( "read error: (%d) %s\n", (int)errno, strerror(errno) );
86                }
87                it[ret + 1] = '\0';
88                rlen += ret;
89
90                if( strstr( it, "\r\n\r\n" ) ) break;
91
92                it += ret;
93                count -= ret;
94
95                if( count < 1 ) return [E414, false, 0, 0];
96        }
97
98        printf("%.*s\n", rlen, buffer);
99
100        it = buffer;
101        int ret = memcmp(it, "GET /", 5);
102        if( ret != 0 ) return [E400, false, 0, 0];
103        it += 5;
104
105        char * end = strstr( it, " " );
106        return [OK200, false, it, end - it];
107}
108
109void sendfile( int pipe[2], int fd, int ans_fd, size_t count ) {
110        off_t offset = 0;
111        ssize_t ret;
112        SPLICE1: while(count > 0) {
113                ret = cfa_splice(ans_fd, &offset, pipe[1], 0p, count, SPLICE_F_MOVE | SPLICE_F_MORE, 0, -1`s, 0p, 0p);
114                if( ret < 0 ) {
115                        if( errno != EAGAIN && errno != EWOULDBLOCK) continue SPLICE1;
116                        abort( "splice [0] error: (%d) %s\n", (int)errno, strerror(errno) );
117                }
118
119                count -= ret;
120                offset += ret;
121                size_t in_pipe = ret;
122                SPLICE2: while(in_pipe > 0) {
123                        ret = cfa_splice(pipe[0], 0p, fd, 0p, in_pipe, SPLICE_F_MOVE | SPLICE_F_MORE, 0, -1`s, 0p, 0p);
124                        if( ret < 0 ) {
125                                if( errno != EAGAIN && errno != EWOULDBLOCK) continue SPLICE2;
126                                abort( "splice [1] error: (%d) %s\n", (int)errno, strerror(errno) );
127                        }
128                        in_pipe -= ret;
129                }
130
131        }
132}
133
134//=============================================================================================
135
136#include <clock.hfa>
137#include <time.hfa>
138#include <thread.hfa>
139
140struct date_buffer {
141        char buff[100];
142};
143
144thread DateFormater {
145        int idx;
146        date_buffer buffers[2];
147};
148
149void ?{}( DateFormater & this ) {
150        ((thread&)this){ *options.clopts.instance };
151        this.idx = 0;
152        memset( this.buffers[0].buff, 0, sizeof(this.buffers[0]) );
153        memset( this.buffers[1].buff, 0, sizeof(this.buffers[1]) );
154}
155
156void main(DateFormater & this) {
157        LOOP: for() {
158                waitfor( ^?{} : this) {
159                        break LOOP;
160                }
161                or else {}
162
163                Time now = getTimeNsec();
164                // Date: Wed, 17 Apr 2013 12:00:00 GMT
165                strftime( this.buffers[this.idx].buff, 100, "%a, %d %b %Y %H:%M:%S %Z", now );
166                printf("Changing date to %s\n", this.buffers[this.idx].buff);
167
168                char * next = this.buffers[this.idx].buff;
169                __atomic_exchange_n((char * volatile *)&date, next, __ATOMIC_SEQ_CST);
170                this.idx = (this.idx + 1) % 2;
171
172                sleep(1`s);
173        }
174}
175
176//=============================================================================================
177DateFormater * the_date_formatter;
178
179void init_protocol(void) {
180        the_date_formatter = alloc();
181        (*the_date_formatter){};
182}
183
184void deinit_protocol(void) {
185        ^(*the_date_formatter){};
186        free( the_date_formatter );
187}
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