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http request response using uv

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main
phani 5 years ago
parent 8a3e050282
commit aa0017f4b0
14 changed files with 663 additions and 30 deletions
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6
runtime/Makefile
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@ -44,7 +44,7 @@ else ifeq ($(USE_MEM),USE_MEM_VM)
CFILES += ${RTDIR}/memory/64bit_nix.c CFILES += ${RTDIR}/memory/64bit_nix.c
endif endif
all: clean runtime #tools all: clean runtime tools
runtime: runtime:
@echo "Compiling runtime" @echo "Compiling runtime"
@ -57,10 +57,10 @@ tools:
clean: clean:
@rm -f core @rm -f core
@echo "Cleaning up runtime" # @echo "Cleaning up runtime"
@rm -f ${RUNTIME} @rm -f ${RUNTIME}
# @echo "Cleaning up tools" # @echo "Cleaning up tools"
# @${MAKE} -C tools clean @${MAKE} -C tools clean
fetch: fetch:
@git submodule update --init --recursive @git submodule update --init --recursive

50
runtime/include/http.h
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@ -0,0 +1,50 @@
#ifndef SFRT_HTTP_H
#define SFRT_HTTP_H
#include <http_parser.h>
#include <types.h>
#include <uv.h>
/* all in-memory ptrs.. don't mess around with that! */
struct http_header {
char *key;
char *val;
};
struct http_resp_header {
char *hdr;
int len;
};
struct http_request {
struct http_header headers[HTTP_HEADERS_MAX];
int nheaders;
char *body;
int bodylen;
// additional for http-parser
int last_was_value;
int header_end;
int message_begin, message_end;
};
struct http_response {
struct http_resp_header headers[HTTP_HEADERS_MAX];
int nheaders;
char *body;
int bodylen;
char *status;
int stlen;
uv_buf_t bufs[HTTP_HEADERS_MAX * 2 + 3]; //max headers, one line for status code, remaining for body!
};
int http_request_body_get(char **body);
int http_request_parse(void);
int http_response_header_set(char *h, int len);
int http_response_body_set(char *body, int len);
int http_response_status_set(char *status, int len);
int http_response_uv(void);
void http_init(void);
#endif /* SFRT_HTTP_H */

19
runtime/include/module.h
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@ -34,6 +34,11 @@ struct module {
// so, using direct epoll for accepting connections. // so, using direct epoll for accepting connections.
// uv_handle_t srvuv; // uv_handle_t srvuv;
unsigned long max_req_sz, max_resp_sz, max_rr_sz; // req/resp from http.. unsigned long max_req_sz, max_resp_sz, max_rr_sz; // req/resp from http..
int nreqhdrs, nresphdrs;
char reqhdrs[HTTP_HEADERS_MAX][HTTP_HEADER_MAXSZ];
char rqctype[HTTP_HEADERVAL_MAXSZ];
char rspctype[HTTP_HEADERVAL_MAXSZ];
char resphdrs[HTTP_HEADERS_MAX][HTTP_HEADER_MAXSZ];
#endif #endif
}; };
@ -43,6 +48,20 @@ void module_free(struct module *mod);
struct module *module_find_by_name(char *name); struct module *module_find_by_name(char *name);
struct module *module_find_by_sock(int sock); struct module *module_find_by_sock(int sock);
static inline void
module_http_info(struct module *m, int nrq, char *rqs, char rqtype[], int nrs, char *rs, char rsptype[])
{
#ifndef STANDALONE
assert(m);
m->nreqhdrs = nrq;
m->nresphdrs = nrs;
memcpy(m->reqhdrs, rqs, HTTP_HEADER_MAXSZ * HTTP_HEADERS_MAX);
memcpy(m->resphdrs, rs, HTTP_HEADER_MAXSZ * HTTP_HEADERS_MAX);
strcpy(m->rqctype, rqtype);
strcpy(m->rspctype, rsptype);
#endif
}
static inline int static inline int
module_is_valid(struct module *mod) module_is_valid(struct module *mod)
{ {

4
runtime/include/sandbox.h
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@ -8,6 +8,7 @@
#include <ucontext.h> #include <ucontext.h>
#include <uv.h> #include <uv.h>
#include "deque.h" #include "deque.h"
#include <http.h>
struct io_handle { struct io_handle {
int fd; int fd;
@ -60,6 +61,9 @@ struct sandbox {
struct sockaddr client; //client requesting connection! struct sockaddr client; //client requesting connection!
int csock; int csock;
uv_tcp_t cuv; uv_tcp_t cuv;
http_parser hp;
struct http_request rqi;
struct http_response rsi;
#endif #endif
char *read_buf; char *read_buf;

4
runtime/include/types.h
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@ -153,4 +153,8 @@ typedef enum {
#define MOD_REQ_RESP_DEFAULT (PAGE_SIZE) #define MOD_REQ_RESP_DEFAULT (PAGE_SIZE)
#define QUIESCENSE_TIME (1<<20) //cycles! #define QUIESCENSE_TIME (1<<20) //cycles!
#define HTTP_HEADERS_MAX 4
#define HTTP_HEADER_MAXSZ 32
#define HTTP_HEADERVAL_MAXSZ 64
#endif /* SFRT_TYPES_H */ #endif /* SFRT_TYPES_H */

179
runtime/src/http.c
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@ -0,0 +1,179 @@
#include <http.h>
#include <sandbox.h>
#include <uv.h>
http_parser_settings settings;
static inline int
http_on_msg_begin(http_parser *parser)
{
struct http_request *r = parser->data;
r->message_begin = 1;
r->last_was_value = 1; //should always start with a header..
return 0;
}
static inline int
http_on_msg_end(http_parser *parser)
{
struct http_request *r = parser->data;
r->message_end = 1;
return 0;
}
static inline int
http_on_header_end(http_parser *parser)
{
struct http_request *r = parser->data;
r->header_end = 1;
return 0;
}
static inline int
http_on_url(http_parser* parser, const char *at, size_t length)
{
struct sandbox *s = sandbox_current();
struct http_request *r = parser->data;
assert(strncmp(s->mod->name, (at + 1), length - 1) == 0);
return 0;
}
static inline int
http_on_header_field(http_parser* parser, const char *at, size_t length)
{
struct http_request *r = parser->data;
if (r->last_was_value) r->nheaders ++;
assert(r->nheaders <= HTTP_HEADERS_MAX);
assert(length < HTTP_HEADER_MAXSZ);
r->last_was_value = 0;
r->headers[r->nheaders - 1].key = (char *)at; //it is from the sandbox's req_resp_data, should persist.
return 0;
}
static inline int
http_on_header_value(http_parser* parser, const char *at, size_t length)
{
struct http_request *r = parser->data;
r->last_was_value = 1;
assert(r->nheaders <= HTTP_HEADERS_MAX);
assert(length < HTTP_HEADERVAL_MAXSZ);
r->headers[r->nheaders - 1].val = (char *)at; //it is from the sandbox's req_resp_data, should persist.
return 0;
}
static inline int
http_on_body(http_parser* parser, const char *at, size_t length)
{
struct http_request *r = parser->data;
struct sandbox *c = sandbox_current();
assert(length <= c->mod->max_req_sz);
r->body = (char *)at;
r->bodylen = length;
return 0;
}
int
http_request_body_get(char **b)
{
struct sandbox *s = sandbox_current();
struct http_request *r = &s->rqi;
*b = r->body;
return r->bodylen;
}
int
http_response_header_set(char *key, int len)
{
// by now, req_resp_data should only be containing response!
struct sandbox *c = sandbox_current();
struct http_response *r = &c->rsi;
assert(r->nheaders < HTTP_HEADERS_MAX);
r->nheaders++;
r->headers[r->nheaders-1].hdr = key;
r->headers[r->nheaders-1].len = len;
return 0;
}
int http_response_body_set(char *body, int len)
{
struct sandbox *c = sandbox_current();
struct http_response *r = &c->rsi;
assert(len < c->mod->max_resp_sz);
r->body = body;
r->bodylen = len;
return 0;
}
int http_response_status_set(char *status, int len)
{
struct sandbox *c = sandbox_current();
struct http_response *r = &c->rsi;
r->status = status;
r->stlen = len;
return 0;
}
int http_response_uv(void)
{
struct sandbox *c = sandbox_current();
struct http_response *r = &c->rsi;
int nb = 0;
r->bufs[nb] = uv_buf_init(r->status, r->stlen);
nb++;
for (int i = 0; i < r->nheaders; i++) {
r->bufs[nb] = uv_buf_init(r->headers[i].hdr, r->headers[i].len);
nb++;
}
if (r->body) {
r->bufs[nb] = uv_buf_init(r->body, r->bodylen);
nb++;
r->bufs[nb] = uv_buf_init(r->status + r->stlen - 2, 2); //for crlf
nb++;
}
return nb;
}
int
http_request_parse(void)
{
struct sandbox *s = sandbox_current();
http_parser_execute(&s->hp, &settings, s->req_resp_data, s->rr_data_len);
return 0;
}
void
http_init(void)
{
http_parser_settings_init(&settings);
settings.on_url = http_on_url;
settings.on_header_field = http_on_header_field;
settings.on_header_value = http_on_header_value;
settings.on_body = http_on_body;
settings.on_headers_complete = http_on_header_end;
settings.on_message_begin = http_on_msg_begin;
settings.on_message_complete = http_on_msg_end;
}

36
runtime/src/libc/uvio.c
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@ -483,23 +483,33 @@ wasm_readv(i32 fd, i32 iov_offset, i32 iovcnt)
i32 i32
wasm_writev(i32 fd, i32 iov_offset, i32 iovcnt) wasm_writev(i32 fd, i32 iov_offset, i32 iovcnt)
{ {
struct sandbox *c = sandbox_current();
if (fd == 1 || fd == 2) { if (fd == 1 || fd == 2) {
int len = 0, r = 0; //both 1 and 2 go to client.
int len = 0;
struct wasm_iovec *iov = get_memory_ptr_void(iov_offset, iovcnt * sizeof(struct wasm_iovec)); struct wasm_iovec *iov = get_memory_ptr_void(iov_offset, iovcnt * sizeof(struct wasm_iovec));
for (int i = 0; i < iovcnt; i+= RDWR_VEC_MAX) { for (int i = 0; i < iovcnt; i++) {
struct iovec bufs[RDWR_VEC_MAX] = { 0 }; char *b = get_memory_ptr_void(iov[i].base_offset, iov[i].len);
int j = 0; memcpy(c->req_resp_data + c->rr_data_len, b, iov[i].len);
for (j = 0; j < RDWR_VEC_MAX && i + j < iovcnt; j++) { c->rr_data_len += iov[i].len;
bufs[j].iov_base = get_memory_ptr_void(iov[i + j].base_offset, iov[i + j].len); len += iov[i].len;
bufs[j].iov_len = iov[i + j].len;
}
r = writev(fd, bufs, j);
if (r <= 0) break;
len += r;
} }
return r < 0 ? r : len; return len;
// for (int i = 0; i < iovcnt; i+= RDWR_VEC_MAX) {
// struct iovec bufs[RDWR_VEC_MAX] = { 0 };
// int j = 0;
// for (j = 0; j < RDWR_VEC_MAX && i + j < iovcnt; j++) {
// bufs[j].iov_base = get_memory_ptr_void(iov[i + j].base_offset, iov[i + j].len);
// bufs[j].iov_len = iov[i + j].len;
// }
//
// r = writev(fd, bufs, j);
// if (r <= 0) break;
// len += r;
// }
//
// return r < 0 ? r : len;
} }
// TODO: read on other file types // TODO: read on other file types
int d = io_handle_fd(fd); int d = io_handle_fd(fd);

3
runtime/src/runtime.c
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@ -8,6 +8,7 @@
#include <sched.h> #include <sched.h>
#include <softint.h> #include <softint.h>
#include <uv.h> #include <uv.h>
#include <http.h>
struct deque_sandbox *glb_dq; struct deque_sandbox *glb_dq;
pthread_mutex_t glbq_mtx = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t glbq_mtx = PTHREAD_MUTEX_INITIALIZER;
@ -288,6 +289,8 @@ runtime_init(void)
softint_mask(SIGUSR1); softint_mask(SIGUSR1);
softint_mask(SIGALRM); softint_mask(SIGALRM);
http_init();
} }
void void

32
runtime/src/sandbox.c
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@ -123,9 +123,9 @@ sandbox_client_request_get(void)
int r = uv_read_start((uv_stream_t *)&curr->cuv, sb_alloc_callback, sb_read_callback); int r = uv_read_start((uv_stream_t *)&curr->cuv, sb_alloc_callback, sb_read_callback);
sandbox_block(); sandbox_block();
#endif #endif
// TODO: http_request_parse if (http_request_parse() != 0) return -1;
return curr->rr_data_len; return 1;
#else #else
return 1; return 1;
#endif #endif
@ -137,17 +137,32 @@ sandbox_client_response_set(void)
#ifndef STANDALONE #ifndef STANDALONE
struct sandbox *curr = sandbox_current(); struct sandbox *curr = sandbox_current();
strcpy(curr->req_resp_data, "HTTP/1.1 200 OK\r\n\r\n"); #ifndef USE_UVIO
strcpy(curr->req_resp_data + curr->rr_data_len, "HTTP/1.1 200 OK\r\n");
// TODO: response set in req_resp_data // TODO: response set in req_resp_data
curr->rr_data_len = strlen("HTTP/1.1 200 OK\r\n\r\n"); curr->rr_data_len += strlen("HTTP/1.1 200 OK\r\n");
#ifndef USE_UVIO
int r = send(curr->csock, curr->req_resp_data, curr->rr_data_len, 0); int r = send(curr->csock, curr->req_resp_data, curr->rr_data_len, 0);
if (r < 0) perror("send"); if (r < 0) perror("send");
#else #else
int bodylen = curr->rr_data_len;
if (bodylen > 0) {
http_response_body_set(curr->req_resp_data, bodylen);
char *key = curr->req_resp_data + curr->rr_data_len;
strcpy(key, "content-type: text/plain\r\n\r\n");
http_response_header_set(key, strlen( "content-type: text/plain\r\n\r\n"));
curr->rr_data_len += strlen("content-type: text/plain\r\n\r\n");
}
char *st = curr->req_resp_data + curr->rr_data_len;
strcpy(st, "HTTP/1.1 200 OK\r\n");
curr->rr_data_len += strlen("HTTP/1.1 200 OK\r\n");
http_response_status_set(st, strlen("HTTP/1.1 200 OK\r\n"));
uv_write_t req = { .data = curr, }; uv_write_t req = { .data = curr, };
uv_buf_t bu = uv_buf_init(curr->req_resp_data, curr->rr_data_len); int n = http_response_uv();
int r = uv_write(&req, (uv_stream_t *)&curr->cuv, &bu, 1, sb_write_callback); int r = uv_write(&req, (uv_stream_t *)&curr->cuv, curr->rsi.bufs, n, sb_write_callback);
sandbox_block(); sandbox_block();
#endif #endif
return r; return r;
@ -180,6 +195,8 @@ sandbox_entry(void)
sandbox_args_setup(argc); sandbox_args_setup(argc);
#ifndef STANDALONE #ifndef STANDALONE
http_parser_init(&curr->hp, HTTP_REQUEST);
curr->hp.data = &curr->rqi;
#ifdef USE_UVIO #ifdef USE_UVIO
int r = uv_tcp_init(runtime_uvio(), (uv_tcp_t *)&curr->cuv); int r = uv_tcp_init(runtime_uvio(), (uv_tcp_t *)&curr->cuv);
assert(r == 0); assert(r == 0);
@ -190,6 +207,7 @@ sandbox_entry(void)
if (sandbox_client_request_get() > 0) if (sandbox_client_request_get() > 0)
#endif #endif
{ {
curr->rr_data_len = 0; // TODO: do this on first write to body.
alloc_linear_memory(); alloc_linear_memory();
// perhaps only initialized for the first instance? or TODO! // perhaps only initialized for the first instance? or TODO!

61
runtime/src/util.c
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@ -7,6 +7,7 @@
#include <module.h> #include <module.h>
#include <util.h> #include <util.h>
#include <jsmn.h> #include <jsmn.h>
#include <http.h>
#define UTIL_MOD_LINE_MAX 1024 #define UTIL_MOD_LINE_MAX 1024
@ -64,10 +65,24 @@ util_parse_modules_file_json(char *filename)
char mname[MOD_NAME_MAX] = { 0 }; char mname[MOD_NAME_MAX] = { 0 };
char mpath[MOD_PATH_MAX] = { 0 }; char mpath[MOD_PATH_MAX] = { 0 };
char *rqhdrs;
char *rsphdrs;
i32 req_sz = 0;
i32 resp_sz = 0;
i32 nargs = 0; i32 nargs = 0;
u32 port = 0; u32 port = 0;
i32 isactive = 0; i32 isactive = 0;
for (int j = 1; j < (toks[i].size * 2); j+=2) { i32 nreqs = 0, nresps = 0;
int j = 1, ntoks = 2 * toks[i].size;
rqhdrs = (char *)malloc(HTTP_HEADER_MAXSZ * HTTP_HEADERS_MAX);
memset(rqhdrs, 0, HTTP_HEADER_MAXSZ * HTTP_HEADERS_MAX);
rsphdrs = (char *)malloc(HTTP_HEADER_MAXSZ * HTTP_HEADERS_MAX);
memset(rsphdrs, 0, HTTP_HEADER_MAXSZ * HTTP_HEADERS_MAX);
char rqtype[HTTP_HEADERVAL_MAXSZ] = { 0 };
char rsptype[HTTP_HEADERVAL_MAXSZ] = { 0 };
for (; j < ntoks; ) {
int ntks = 1;
char val[256] = { 0 }, key[32] = { 0 }; char val[256] = { 0 }, key[32] = { 0 };
sprintf(val, "%.*s", toks[j + i + 1].end - toks[j + i + 1].start, filebuf + toks[j + i + 1].start); sprintf(val, "%.*s", toks[j + i + 1].end - toks[j + i + 1].start, filebuf + toks[j + i + 1].start);
@ -82,17 +97,57 @@ util_parse_modules_file_json(char *filename)
nargs = atoi(val); nargs = atoi(val);
} else if (strcmp(key, "active") == 0) { } else if (strcmp(key, "active") == 0) {
isactive = (strcmp(val, "yes") == 0); isactive = (strcmp(val, "yes") == 0);
} else if (strcmp(key, "http-req-headers") == 0) {
assert(toks[i + j + 1].type == JSMN_ARRAY);
assert(toks[i + j + 1].size <= HTTP_HEADERS_MAX);
nreqs = toks[i + j + 1].size;
ntks += nreqs;
ntoks += nreqs;
for (int k = 1; k <= toks[i + j + 1].size; k++) {
jsmntok_t *g = &toks[i + j + k + 1];
char *r = rqhdrs + ((k-1)*HTTP_HEADER_MAXSZ);
assert(g->end - g->start < HTTP_HEADER_MAXSZ);
strncpy(r, filebuf + g->start, g->end - g->start);
}
} else if (strcmp(key, "http-resp-headers") == 0) {
assert(toks[i + j + 1].type == JSMN_ARRAY);
assert(toks[i + j + 1].size <= HTTP_HEADERS_MAX);
nresps = toks[i + j + 1].size;
ntks += nresps;
for (int k = 1; k <= toks[i + j + 1].size; k++) {
char *r = rsphdrs + ((k-1)*HTTP_HEADER_MAXSZ);
jsmntok_t *g = &toks[i + j + k + 1];
assert(g->end - g->start < HTTP_HEADER_MAXSZ);
strncpy(r, filebuf + g->start, g->end - g->start);
}
ntoks += nresps;
} else if (strcmp(key, "http-req-size") == 0) {
req_sz = atoi(val);
} else if (strcmp(key, "http-resp-size") == 0) {
resp_sz = atoi(val);
} else if (strcmp(key, "http-req-content-type") == 0) {
strcpy(rqtype, val);
} else if (strcmp(key, "http-resp-content-type") == 0) {
strcpy(rsptype, val);
} else { } else {
debuglog("Invalid (%s,%s)\n", key, val); debuglog("Invalid (%s,%s)\n", key, val);
} }
j += ntks;
} }
i += (toks[i].size * 2); i += ntoks;
// do not load if it is not active // do not load if it is not active
if (isactive == 0) continue; if (isactive == 0) continue;
struct module *m = module_alloc(mname, mpath, nargs, 0, 0, 0, port, 0, 0); struct module *m = module_alloc(mname, mpath, nargs, 0, 0, 0, port, req_sz, resp_sz);
assert(m); assert(m);
module_http_info(m, nreqs, rqhdrs, rqtype, nresps, rsphdrs, rsptype);
nmods++; nmods++;
free(rqhdrs);
free(rsphdrs);
} }
free(filebuf); free(filebuf);

8
runtime/tests/test_empty.json
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@ -3,5 +3,11 @@
"name" : "empty", "name" : "empty",
"path" : "empty_wasm.so", "path" : "empty_wasm.so",
"port" : 10000, "port" : 10000,
"argsize" : 1 "argsize" : 1,
"http-req-headers" : [ ],
"http-req-content-type" : "text/plain",
"http-req-size": 102400,
"http-resp-headers" : [ ],
"http-resp-size" : 10240,
"http-resp-content-type" : "text/plain"
} }

10
runtime/tools/httpclient/Makefile
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@ -0,0 +1,10 @@
.PHONY: all client clean
all: clean client
client: client.c ../../http-parser/http_parser.c ../../http-parser/http_parser.h
@echo "Compiling httpclient"
@gcc -I../../http_parser/ ../../http-parser/http_parser.c client.c -g -o ../../bin/httpclient
clean:
@rm -f ../../bin/httpclient

276
runtime/tools/httpclient/client.c
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@ -0,0 +1,276 @@
#include <sys/socket.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#define SERVER_PORT 10000
#define SERVER_ADDR "127.0.0.1"
#define REQ_MAX 1024
#define POST_MAX (1024*1024)
#define RESP_MAX 1024
//#define GET_REQUEST "GET %s HTTP/1.0\r\n"
//#define GET_REQUEST "GET %s.ico HTTP/1.1\r\n" \
"Host: 0.0.0.0=5000\r\n" \
"User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9) Gecko/2008061015 Firefox/3.0\r\n" \
"Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n" \
"Accept-Language: en-us,en;q=0.5\r\n" \
"Accept-Encoding: gzip,deflate\r\n" \
"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n" \
"Keep-Alive: 300\r\n" \
"Connection: keep-alive\r\n" \
"\r\n"
//#define GET_REQUEST "GET /%s HTTP/1.1\r\n" \
// "Host: 0.0.0.0=5000\r\n" \
// "Accept: */*\r\n" \
// "\r\n"
#define GET_REQUEST "GET /%s HTTP/1.1\r\n" \
"Host: 0.0.0.0=xxxx\r\n" \
"\r\n"
#define POST_REQUEST "POST /%s HTTP/1.0\r\n" \
"content-type: image/png\r\n" \
"content-length: %lu\r\n" \
"\r\n"
#define POST_REQUEST_END "\r\n\r\n"
//Byte array of bitmap of 128 x 128 px:
char img [] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x7, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc1, 0x83, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3, 0xc0, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xf, 0xf0, 0x7f,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x1f, 0xfc,
0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x7f,
0xfe, 0xf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0,
0xff, 0xff, 0x7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xc1, 0xff, 0xff, 0x83, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0x87, 0xff, 0xff, 0xe1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xf, 0xff, 0xff, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xfe, 0x1f, 0xff, 0xff, 0xf8, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xfc, 0x3f, 0xff, 0xff, 0xfc, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xf8, 0x7f, 0xff, 0xff, 0xfe, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xf, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe1, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xc3, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xe1,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xff, 0xff, 0xff,
0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf, 0xff, 0xff, 0xff,
0xff, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff,
0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f, 0xff,
0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f,
0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc,
0x7f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xff, 0xff, 0xf0, 0xf, 0xff, 0xff, 0xc7,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xff, 0xc0, 0x3, 0xff, 0xff,
0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xff, 0x80, 0x1, 0xff,
0xff, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xfe, 0xf, 0xf0,
0x7f, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xfe, 0x1f,
0xf8, 0x7f, 0xff, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xcf, 0xff, 0xfc,
0x7f, 0xfe, 0x3f, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff,
0xf8, 0x7f, 0xfe, 0x1f, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f,
0xff, 0xf8, 0xff, 0xff, 0x1f, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0x8f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0x8f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x8f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x8f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff, 0xf9, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x9f, 0xff, 0xf3, 0xff, 0xff, 0xcf, 0xff, 0xf8, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff, 0xf8, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff, 0xf8, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff, 0xf8,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xf1, 0xff, 0xff, 0x8f, 0xff,
0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xf8, 0xff, 0xff, 0x1f,
0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xf8, 0x7f, 0xfe,
0x1f, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xff, 0xfc, 0x3f,
0xfc, 0x3f, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xfe,
0x1f, 0xf8, 0x7f, 0xff, 0xf9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff,
0xff, 0x7, 0xe0, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f,
0xff, 0xff, 0x80, 0x1, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0x8f, 0xff, 0xff, 0xe0, 0x7, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0x8f, 0xff, 0xff, 0xf8, 0x3f, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe1, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xf8, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xfc, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xfe, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe,
0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xfe, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xfe, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x3f, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x8f, 0xff, 0xf1, 0xff, 0xff, 0x9f, 0xff, 0xf1, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0xc0, 0xff, 0xff, 0x7, 0xff, 0xf1, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0xff, 0x80, 0xff, 0xff, 0x3, 0xff, 0xf1, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x80, 0x0, 0x0, 0x1, 0xff, 0xe1, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xff, 0x18, 0x0, 0x0, 0x10, 0xff, 0xe3,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xfe, 0x18, 0x0, 0x0, 0x18, 0x7f,
0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xfc, 0x3f, 0xff, 0xff, 0xfc,
0x7f, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xfc, 0x7f, 0xff, 0xff,
0xfe, 0x3f, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xf8, 0xff, 0xff,
0xff, 0xfe, 0x1f, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xf8, 0xff,
0xff, 0xff, 0xff, 0x1f, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe3, 0xf1,
0xff, 0xe0, 0x3f, 0xff, 0x8f, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf1,
0xe1, 0xfc, 0x0, 0x1, 0xff, 0x8f, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xf1, 0xe3, 0xf0, 0x0, 0x0, 0x7f, 0xc7, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xf1, 0xc7, 0xf0, 0x3f, 0xe0, 0x3f, 0xc3, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xf1, 0xc7, 0xf1, 0xff, 0xfe, 0x3f, 0xe3, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf8, 0x8f, 0xf1, 0xff, 0xfe, 0x7f, 0xf1, 0x1f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xf8, 0xf, 0xf1, 0xff, 0xfc, 0x7f, 0xf1, 0x1f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x1f, 0xf1, 0xff, 0xfc, 0x7f, 0xf8, 0x1f, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x3f, 0xf9, 0xff, 0xfc, 0x7f, 0xf8, 0x1f, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x3f, 0xf8, 0xff, 0xfc, 0x7f, 0xfc, 0x3f,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xf8, 0xff, 0xf8, 0xff, 0xfe,
0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xff, 0xf8, 0xff,
0xff, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xff, 0xf8,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x7f,
0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc,
0x7f, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xfc, 0x7f, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xfe, 0x3f, 0xf1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xfe, 0x3f, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xfe, 0x3f, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xe3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xc7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0x8f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0xf, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc3, 0x1f, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x3f, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x7f,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
int
connect_n_send(void)
{
int sock;
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("socket");
return -1;
}
struct sockaddr_in srvaddr;
srvaddr.sin_family = AF_INET;
srvaddr.sin_port = htons(SERVER_PORT);
if (inet_aton(SERVER_ADDR, &srvaddr.sin_addr) == 0) {
perror("inet_addr");
close(sock);
return -1;
}
if (connect(sock, (struct sockaddr *)&srvaddr, sizeof(srvaddr)) < 0) {
perror("connect");
close(sock);
return -1;
}
char *req = (char *)malloc(REQ_MAX);
assert(req);
memset(req, 0, REQ_MAX);
sprintf(req, GET_REQUEST, "empty");
// char *req = (char *)malloc(POST_MAX);
// assert(req);
// memset(req, 0, POST_MAX);
// sprintf(req, POST_REQUEST, "HELLO", sizeof(img));
int len = strlen(req);
// memcpy(req+len, img, sizeof(img));
// strcat(req+len+sizeof(img), POST_REQUEST_END);
// len += sizeof(img) + strlen(POST_REQUEST_END);
char *resp = (char *)malloc(RESP_MAX);
assert(resp);
memset(resp, 0, RESP_MAX);
// int fd = open("tmp_cli.png", O_CREAT | O_RDWR | O_TRUNC, S_IRWXU | S_IRWXO | S_IRWXG);
// if (fd < 0) {
// perror("open");
// goto skip;
// }
//
// int sz = write(fd, img, sizeof(img));
// if (sz < 0) {
// perror("write");
// }
// close(fd);
skip:
printf("Sending..\n");
if (send(sock, req, len, 0) < 0) {
perror("send");
close(sock);
return -1;
}
printf("Receiving..\n");
int r = 0, rcvd = 0;
while ((r = recv(sock, resp + rcvd, RESP_MAX, 0)) > 0) {
rcvd += r;
if (r < RESP_MAX) break;
resp = (char *)realloc(resp, rcvd + RESP_MAX);
assert(resp);
memset(resp + rcvd, 0, RESP_MAX);
}
printf("Response: %s\n", resp);
free(resp);
free(req);
close(sock);
return 0;
}
int
main(int argc, char **argv)
{
while (1) {
int s = 0;
printf("Test? (0 = exit)\n");
scanf("%d", &s);
if (s == 0) break;
connect_n_send();
}
}

5
runtime/tools/udpclient/Makefile
Unescape View File

@ -1,9 +1,8 @@
all: clean udp
udp: udpclient.c udp: udpclient.c
@echo "Compiling udpclient" @echo "Compiling udpclient"
@gcc udpclient.c -o ../../bin/udpclient -lpthread @gcc udpclient.c -o ../../bin/udpclient -lpthread
clean: clean:
@echo "Cleaning up udpclient"
@rm -f ../../bin/udpclient @rm -f ../../bin/udpclient
all: clean udp

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